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CVE-2024-47701 (GCVE-0-2024-47701)

Vulnerability from cvelistv5 – Published: 2024-10-21 11:53 – Updated: 2026-08-05 11:39
VLAI
Title
ext4: avoid OOB when system.data xattr changes underneath the filesystem
Summary
In the Linux kernel, the following vulnerability has been resolved: ext4: avoid OOB when system.data xattr changes underneath the filesystem When looking up for an entry in an inlined directory, if e_value_offs is changed underneath the filesystem by some change in the block device, it will lead to an out-of-bounds access that KASAN detects as an UAF. EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. loop0: detected capacity change from 2048 to 2047 ================================================================== BUG: KASAN: use-after-free in ext4_search_dir+0xf2/0x1c0 fs/ext4/namei.c:1500 Read of size 1 at addr ffff88803e91130f by task syz-executor269/5103 CPU: 0 UID: 0 PID: 5103 Comm: syz-executor269 Not tainted 6.11.0-rc4-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: <TASK> __dump_stack lib/dump_stack.c:93 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119 print_address_description mm/kasan/report.c:377 [inline] print_report+0x169/0x550 mm/kasan/report.c:488 kasan_report+0x143/0x180 mm/kasan/report.c:601 ext4_search_dir+0xf2/0x1c0 fs/ext4/namei.c:1500 ext4_find_inline_entry+0x4be/0x5e0 fs/ext4/inline.c:1697 __ext4_find_entry+0x2b4/0x1b30 fs/ext4/namei.c:1573 ext4_lookup_entry fs/ext4/namei.c:1727 [inline] ext4_lookup+0x15f/0x750 fs/ext4/namei.c:1795 lookup_one_qstr_excl+0x11f/0x260 fs/namei.c:1633 filename_create+0x297/0x540 fs/namei.c:3980 do_symlinkat+0xf9/0x3a0 fs/namei.c:4587 __do_sys_symlinkat fs/namei.c:4610 [inline] __se_sys_symlinkat fs/namei.c:4607 [inline] __x64_sys_symlinkat+0x95/0xb0 fs/namei.c:4607 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f3e73ced469 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fff4d40c258 EFLAGS: 00000246 ORIG_RAX: 000000000000010a RAX: ffffffffffffffda RBX: 0032656c69662f2e RCX: 00007f3e73ced469 RDX: 0000000020000200 RSI: 00000000ffffff9c RDI: 00000000200001c0 RBP: 0000000000000000 R08: 00007fff4d40c290 R09: 00007fff4d40c290 R10: 0023706f6f6c2f76 R11: 0000000000000246 R12: 00007fff4d40c27c R13: 0000000000000003 R14: 431bde82d7b634db R15: 00007fff4d40c2b0 </TASK> Calling ext4_xattr_ibody_find right after reading the inode with ext4_get_inode_loc will lead to a check of the validity of the xattrs, avoiding this problem.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-21 13:04 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: e8e948e7802a2ab05c146d3e72a39b93b5718236 , < 5b076d37e8d99918e9294bd6b35a8bbb436819b0 (git)
Affected: e8e948e7802a2ab05c146d3e72a39b93b5718236 , < 8adf0eb4e361a9e060d54f4bd0ac9c5d85277d20 (git)
Affected: e8e948e7802a2ab05c146d3e72a39b93b5718236 , < 7fc22c3b3ffc0e952f5e0062dd11aa6ae76affba (git)
Affected: e8e948e7802a2ab05c146d3e72a39b93b5718236 , < be2e9b111e2790962cc66a177869b4e9717b4e29 (git)
Affected: e8e948e7802a2ab05c146d3e72a39b93b5718236 , < ea32883e4a03ed575a2eb7a66542022312bde477 (git)
Affected: e8e948e7802a2ab05c146d3e72a39b93b5718236 , < 2a6579ef5f2576a940125729f7409cc182f1c8df (git)
Affected: e8e948e7802a2ab05c146d3e72a39b93b5718236 , < 371d0bacecd529f887ea2547333d9173e7bcdc0a (git)
Affected: e8e948e7802a2ab05c146d3e72a39b93b5718236 , < ccb8c18076e2e630fea23fbec583cdad61787fc5 (git)
Affected: e8e948e7802a2ab05c146d3e72a39b93b5718236 , < c6b72f5d82b1017bad80f9ebf502832fc321d796 (git)
guessed Create a notification for this product.
Linux Linux Affected: 3.8
Unaffected: 0 , < 3.8 (semver)
Unaffected: 4.19.323 , ≤ 4.19.* (semver)
Unaffected: 5.4.285 , ≤ 5.4.* (semver)
Unaffected: 5.10.227 , ≤ 5.10.* (semver)
Unaffected: 5.15.168 , ≤ 5.15.* (semver)
Unaffected: 6.1.113 , ≤ 6.1.* (semver)
Unaffected: 6.6.54 , ≤ 6.6.* (semver)
Unaffected: 6.10.13 , ≤ 6.10.* (semver)
Unaffected: 6.11.2 , ≤ 6.11.* (semver)
Unaffected: 6.12 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Siemens RUGGEDCOM RST2428P Affected: 0 , < V3.2 (custom)
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Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family Affected: 0 , < V3.2 (custom)
guessed Create a notification for this product.
Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family Affected: 0 , < V3.2 (custom)
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Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem Affected: 0 , < * (custom)
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Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
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Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: avoid OOB when system.data xattr changes underneath the filesystem\n\nWhen looking up for an entry in an inlined directory, if e_value_offs is\nchanged underneath the filesystem by some change in the block device, it\nwill lead to an out-of-bounds access that KASAN detects as an UAF.\n\nEXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none.\nloop0: detected capacity change from 2048 to 2047\n==================================================================\nBUG: KASAN: use-after-free in ext4_search_dir+0xf2/0x1c0 fs/ext4/namei.c:1500\nRead of size 1 at addr ffff88803e91130f by task syz-executor269/5103\n\nCPU: 0 UID: 0 PID: 5103 Comm: syz-executor269 Not tainted 6.11.0-rc4-syzkaller #0\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014\nCall Trace:\n \u003cTASK\u003e\n __dump_stack lib/dump_stack.c:93 [inline]\n dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119\n print_address_description mm/kasan/report.c:377 [inline]\n print_report+0x169/0x550 mm/kasan/report.c:488\n kasan_report+0x143/0x180 mm/kasan/report.c:601\n ext4_search_dir+0xf2/0x1c0 fs/ext4/namei.c:1500\n ext4_find_inline_entry+0x4be/0x5e0 fs/ext4/inline.c:1697\n __ext4_find_entry+0x2b4/0x1b30 fs/ext4/namei.c:1573\n ext4_lookup_entry fs/ext4/namei.c:1727 [inline]\n ext4_lookup+0x15f/0x750 fs/ext4/namei.c:1795\n lookup_one_qstr_excl+0x11f/0x260 fs/namei.c:1633\n filename_create+0x297/0x540 fs/namei.c:3980\n do_symlinkat+0xf9/0x3a0 fs/namei.c:4587\n __do_sys_symlinkat fs/namei.c:4610 [inline]\n __se_sys_symlinkat fs/namei.c:4607 [inline]\n __x64_sys_symlinkat+0x95/0xb0 fs/namei.c:4607\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\nRIP: 0033:0x7f3e73ced469\nCode: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007fff4d40c258 EFLAGS: 00000246 ORIG_RAX: 000000000000010a\nRAX: ffffffffffffffda RBX: 0032656c69662f2e RCX: 00007f3e73ced469\nRDX: 0000000020000200 RSI: 00000000ffffff9c RDI: 00000000200001c0\nRBP: 0000000000000000 R08: 00007fff4d40c290 R09: 00007fff4d40c290\nR10: 0023706f6f6c2f76 R11: 0000000000000246 R12: 00007fff4d40c27c\nR13: 0000000000000003 R14: 431bde82d7b634db R15: 00007fff4d40c2b0\n \u003c/TASK\u003e\n\nCalling ext4_xattr_ibody_find right after reading the inode with\next4_get_inode_loc will lead to a check of the validity of the xattrs,\navoiding this problem."
        }
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            {
              "lang": "en",
              "value": "AV:L - The vulnerable path is reached through ordinary local filesystem syscalls (symlinkat/open/rename/unlink triggering ext4_lookup \u2192 __ext4_find_entry \u2192 ext4_find_inline_entry) on a mounted ext4 image whose backing store the attacker can modify. No network or remote protocol is involved.\nAC:L - The attacker controls both halves: the on-disk xattr bytes (backing file/removable device they own) and the cache invalidation that forces the stale inode block to be re-read (loop capacity change, BLKFLSBUF, or induced memory pressure), then issues the lookup at will; syzbot reproduces it deterministically with a C reproducer.\nPR:L - An unprivileged local user can loop-mount their own ext4 image on typical desktop/CI systems (udisks2 loop-setup and filesystem-mount are allow_active) or supply auto-mounted removable media, and retains write access to the backing store; the lookup that triggers the OOB requires no privileges at all.\nUI:N - In the automount/self-mount scenario the attacker performs every step themselves \u2014 attach or loop-mount the image, mutate the backing bytes, invalidate the cache, then look up a name \u2014 with no action required from any other user.\nS:U - The out-of-bounds access and its consequences are confined to the kernel\u0027s own memory and the same security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - e_value_offs is a 16-bit attacker-chosen value, so ext4_search_dir reads up to ~64KB past the inode-table buffer into adjacent slab/page-cache memory; the same unvalidated offset is used by ext4_read_inline_data\u0027s memcpy, and matched \"directory entries\" expose adjacent kernel memory contents (names, inode numbers) to userspace.\nI:H - The out-of-bounds entry pointer is handed to writers \u2014 ext4_setent() stores an attacker-chosen inode number plus file_type at that address during rename, and ext4_generic_delete_entry() zeroes/rewrites it on unlink \u2014 giving a semi-controlled out-of-bounds kernel write that is leverageable against heap-sprayed adjacent objects.\nA:H - The out-of-bounds access is reported by KASAN as a use-after-free read and can hit unmapped or poisoned memory and corrupt neighbouring kernel objects, resulting in an oops or panic that takes down the whole system."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:39:32.569Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/5b076d37e8d99918e9294bd6b35a8bbb436819b0"
        },
        {
          "url": "https://git.kernel.org/stable/c/8adf0eb4e361a9e060d54f4bd0ac9c5d85277d20"
        },
        {
          "url": "https://git.kernel.org/stable/c/7fc22c3b3ffc0e952f5e0062dd11aa6ae76affba"
        },
        {
          "url": "https://git.kernel.org/stable/c/be2e9b111e2790962cc66a177869b4e9717b4e29"
        },
        {
          "url": "https://git.kernel.org/stable/c/ea32883e4a03ed575a2eb7a66542022312bde477"
        },
        {
          "url": "https://git.kernel.org/stable/c/2a6579ef5f2576a940125729f7409cc182f1c8df"
        },
        {
          "url": "https://git.kernel.org/stable/c/371d0bacecd529f887ea2547333d9173e7bcdc0a"
        },
        {
          "url": "https://git.kernel.org/stable/c/ccb8c18076e2e630fea23fbec583cdad61787fc5"
        },
        {
          "url": "https://git.kernel.org/stable/c/c6b72f5d82b1017bad80f9ebf502832fc321d796"
        }
      ],
      "title": "ext4: avoid OOB when system.data xattr changes underneath the filesystem",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-47701",
    "datePublished": "2024-10-21T11:53:37.276Z",
    "dateReserved": "2024-09-30T16:00:12.945Z",
    "dateUpdated": "2026-08-05T11:39:32.569Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2024-47701",
      "date": "2026-09-16",
      "epss": "0.00247",
      "percentile": "0.16172"
    },
    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"3.8\", \"versionEndExcluding\": \"5.10.227\", \"matchCriteriaId\": \"2422D341-BD04-4C11-A233-0C67AEB040B0\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.11\", \"versionEndExcluding\": \"5.15.168\", \"matchCriteriaId\": \"4D51C05D-455B-4D8D-89E7-A58E140B864C\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.16\", \"versionEndExcluding\": \"6.1.113\", \"matchCriteriaId\": \"D01BD22E-ACD1-4618-9D01-6116570BE1EE\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.2\", \"versionEndExcluding\": \"6.6.54\", \"matchCriteriaId\": \"D448821D-C085-4CAF-88FA-2DDE7BE21976\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.7\", \"versionEndExcluding\": \"6.10.13\", \"matchCriteriaId\": \"CE94BB8D-B0AB-4563-9ED7-A12122B56EBE\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.11\", \"versionEndExcluding\": \"6.11.2\", \"matchCriteriaId\": \"AB755D26-97F4-43B6-8604-CD076811E181\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\next4: avoid OOB when system.data xattr changes underneath the filesystem\\n\\nWhen looking up for an entry in an inlined directory, if e_value_offs is\\nchanged underneath the filesystem by some change in the block device, it\\nwill lead to an out-of-bounds access that KASAN detects as an UAF.\\n\\nEXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none.\\nloop0: detected capacity change from 2048 to 2047\\n==================================================================\\nBUG: KASAN: use-after-free in ext4_search_dir+0xf2/0x1c0 fs/ext4/namei.c:1500\\nRead of size 1 at addr ffff88803e91130f by task syz-executor269/5103\\n\\nCPU: 0 UID: 0 PID: 5103 Comm: syz-executor269 Not tainted 6.11.0-rc4-syzkaller #0\\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014\\nCall Trace:\\n \u003cTASK\u003e\\n __dump_stack lib/dump_stack.c:93 [inline]\\n dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119\\n print_address_description mm/kasan/report.c:377 [inline]\\n print_report+0x169/0x550 mm/kasan/report.c:488\\n kasan_report+0x143/0x180 mm/kasan/report.c:601\\n ext4_search_dir+0xf2/0x1c0 fs/ext4/namei.c:1500\\n ext4_find_inline_entry+0x4be/0x5e0 fs/ext4/inline.c:1697\\n __ext4_find_entry+0x2b4/0x1b30 fs/ext4/namei.c:1573\\n ext4_lookup_entry fs/ext4/namei.c:1727 [inline]\\n ext4_lookup+0x15f/0x750 fs/ext4/namei.c:1795\\n lookup_one_qstr_excl+0x11f/0x260 fs/namei.c:1633\\n filename_create+0x297/0x540 fs/namei.c:3980\\n do_symlinkat+0xf9/0x3a0 fs/namei.c:4587\\n __do_sys_symlinkat fs/namei.c:4610 [inline]\\n __se_sys_symlinkat fs/namei.c:4607 [inline]\\n __x64_sys_symlinkat+0x95/0xb0 fs/namei.c:4607\\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\nRIP: 0033:0x7f3e73ced469\\nCode: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48\\nRSP: 002b:00007fff4d40c258 EFLAGS: 00000246 ORIG_RAX: 000000000000010a\\nRAX: ffffffffffffffda RBX: 0032656c69662f2e RCX: 00007f3e73ced469\\nRDX: 0000000020000200 RSI: 00000000ffffff9c RDI: 00000000200001c0\\nRBP: 0000000000000000 R08: 00007fff4d40c290 R09: 00007fff4d40c290\\nR10: 0023706f6f6c2f76 R11: 0000000000000246 R12: 00007fff4d40c27c\\nR13: 0000000000000003 R14: 431bde82d7b634db R15: 00007fff4d40c2b0\\n \u003c/TASK\u003e\\n\\nCalling ext4_xattr_ibody_find right after reading the inode with\\next4_get_inode_loc will lead to a check of the validity of the xattrs,\\navoiding this problem.\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ext4: evitar OOB cuando system.data xattr cambia debajo del sistema de archivos Al buscar una entrada en un directorio en l\\u00ednea, si e_value_offs se cambia debajo del sistema de archivos por alg\\u00fan cambio en el dispositivo de bloque, conducir\\u00e1 a un acceso fuera de los l\\u00edmites que KASAN detecta como un UAF. EXT4-fs (loop0): sistema de archivos montado 00000000-0000-0000-0000-00000000000 r/w sin diario. Modo de cuota: ninguno. loop0: se detect\\u00f3 un cambio de capacidad de 2048 a 2047 ======================================================================= ERROR: KASAN: use after free en ext4_search_dir+0xf2/0x1c0 fs/ext4/namei.c:1500 Lectura de tama\\u00f1o 1 en la direcci\\u00f3n ffff88803e91130f por la tarea syz-executor269/5103 CPU: 0 UID: 0 PID: 5103 Comm: syz-executor269 No contaminado 6.11.0-rc4-syzkaller #0 Nombre del hardware: PC est\\u00e1ndar QEMU (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 01/04/2014 Seguimiento de llamadas:  __dump_stack lib/dump_stack.c:93 [en l\\u00ednea] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119 print_address_description mm/kasan/report.c:377 [en l\\u00ednea] print_report+0x169/0x550 mm/kasan/report.c:488 kasan_report+0x143/0x180 mm/kasan/report.c:601 ext4_search_dir+0xf2/0x1c0 fs/ext4/namei.c:1500 ext4_find_inline_entry+0x4be/0x5e0 fs/ext4/inline.c:1697 __ext4_find_entry+0x2b4/0x1b30 fs/ext4/namei.c:1573 ext4_lookup_entry fs/ext4/namei.c:1727 [en l\\u00ednea] ext4_lookup+0x15f/0x750 fs/ext4/namei.c:1795 lookup_one_qstr_excl+0x11f/0x260 fs/namei.c:1633 filename_create+0x297/0x540 fs/namei.c:3980 do_symlinkat+0xf9/0x3a0 fs/namei.c:4587 __do_sys_symlinkat fs/namei.c:4610 [en l\\u00ednea] __se_sys_symlinkat fs/namei.c:4607 [en l\\u00ednea] __x64_sys_symlinkat+0x95/0xb0 fs/namei.c:4607 do_syscall_x64 arch/x86/entry/common.c:52 [en l\\u00ednea] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f3e73ced469 C\\u00f3digo: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u0026lt;48\u0026gt; 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fff4d40c258 EFLAGS: 00000246 ORIG_RAX: 000000000000010a RAX: ffffffffffffffda RBX: 0032656c69662f2e RCX: 00007f3e73ced469 RDX: 0000000020000200 RSI: 00000000ffffff9c RDI: 00000000200001c0 RBP: 0000000000000000 R08: 00007fff4d40c290 R09: 00007fff4d40c290 R10: 0023706f6f6c2f76 R11: 0000000000000246 R12: 00007fff4d40c27c R13: 0000000000000003 R14: 431bde82d7b634db R15: 00007fff4d40c2b0  Llamada ext4_xattr_ibody_find justo despu\\u00e9s de leer el inodo con ext4_get_inode_loc conducir\\u00e1 a una verificaci\\u00f3n de la validez de los xattrs, evitando este problema.\"}]",
      "id": "CVE-2024-47701",
      "lastModified": "2024-11-08T16:15:25.740",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 5.9}]}",
      "published": "2024-10-21T12:15:06.663",
      "references": "[{\"url\": \"https://git.kernel.org/stable/c/2a6579ef5f2576a940125729f7409cc182f1c8df\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/371d0bacecd529f887ea2547333d9173e7bcdc0a\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/5b076d37e8d99918e9294bd6b35a8bbb436819b0\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/7fc22c3b3ffc0e952f5e0062dd11aa6ae76affba\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/8adf0eb4e361a9e060d54f4bd0ac9c5d85277d20\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/be2e9b111e2790962cc66a177869b4e9717b4e29\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/c6b72f5d82b1017bad80f9ebf502832fc321d796\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/ccb8c18076e2e630fea23fbec583cdad61787fc5\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/ea32883e4a03ed575a2eb7a66542022312bde477\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}]",
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-416\"}]}]"
    },
    "microsoft_vex": {
      "current_release_date": "2026-02-18T02:05:56.000Z",
      "cve": "CVE-2024-47701",
      "id": "msrc_CVE-2024-47701",
      "initial_release_date": "2024-10-01T07:00:00.000Z",
      "product_status:fixed": "5",
      "product_status:known_affected": "5",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "ext4: avoid OOB when system.data xattr changes underneath the filesystem",
      "url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2024-47701.json",
      "version": "3"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-47701\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-10-21T12:15:06.663\",\"lastModified\":\"2026-08-04T11:20:41.720\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\next4: avoid OOB when system.data xattr changes underneath the filesystem\\n\\nWhen looking up for an entry in an inlined directory, if e_value_offs is\\nchanged underneath the filesystem by some change in the block device, it\\nwill lead to an out-of-bounds access that KASAN detects as an UAF.\\n\\nEXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none.\\nloop0: detected capacity change from 2048 to 2047\\n==================================================================\\nBUG: KASAN: use-after-free in ext4_search_dir+0xf2/0x1c0 fs/ext4/namei.c:1500\\nRead of size 1 at addr ffff88803e91130f by task syz-executor269/5103\\n\\nCPU: 0 UID: 0 PID: 5103 Comm: syz-executor269 Not tainted 6.11.0-rc4-syzkaller #0\\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014\\nCall Trace:\\n \u003cTASK\u003e\\n __dump_stack lib/dump_stack.c:93 [inline]\\n dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119\\n print_address_description mm/kasan/report.c:377 [inline]\\n print_report+0x169/0x550 mm/kasan/report.c:488\\n kasan_report+0x143/0x180 mm/kasan/report.c:601\\n ext4_search_dir+0xf2/0x1c0 fs/ext4/namei.c:1500\\n ext4_find_inline_entry+0x4be/0x5e0 fs/ext4/inline.c:1697\\n __ext4_find_entry+0x2b4/0x1b30 fs/ext4/namei.c:1573\\n ext4_lookup_entry fs/ext4/namei.c:1727 [inline]\\n ext4_lookup+0x15f/0x750 fs/ext4/namei.c:1795\\n lookup_one_qstr_excl+0x11f/0x260 fs/namei.c:1633\\n filename_create+0x297/0x540 fs/namei.c:3980\\n do_symlinkat+0xf9/0x3a0 fs/namei.c:4587\\n __do_sys_symlinkat fs/namei.c:4610 [inline]\\n __se_sys_symlinkat fs/namei.c:4607 [inline]\\n __x64_sys_symlinkat+0x95/0xb0 fs/namei.c:4607\\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\nRIP: 0033:0x7f3e73ced469\\nCode: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48\\nRSP: 002b:00007fff4d40c258 EFLAGS: 00000246 ORIG_RAX: 000000000000010a\\nRAX: ffffffffffffffda RBX: 0032656c69662f2e RCX: 00007f3e73ced469\\nRDX: 0000000020000200 RSI: 00000000ffffff9c RDI: 00000000200001c0\\nRBP: 0000000000000000 R08: 00007fff4d40c290 R09: 00007fff4d40c290\\nR10: 0023706f6f6c2f76 R11: 0000000000000246 R12: 00007fff4d40c27c\\nR13: 0000000000000003 R14: 431bde82d7b634db R15: 00007fff4d40c2b0\\n \u003c/TASK\u003e\\n\\nCalling ext4_xattr_ibody_find right after reading the inode with\\next4_get_inode_loc will lead to a check of the validity of the xattrs,\\navoiding this problem.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ext4: evitar OOB cuando system.data xattr cambia debajo del sistema de archivos Al buscar una entrada en un directorio en l\u00ednea, si e_value_offs se cambia debajo del sistema de archivos por alg\u00fan cambio en el dispositivo de bloque, conducir\u00e1 a un acceso fuera de los l\u00edmites que KASAN detecta como un UAF. EXT4-fs (loop0): sistema de archivos montado 00000000-0000-0000-0000-00000000000 r/w sin diario. Modo de cuota: ninguno. loop0: se detect\u00f3 un cambio de capacidad de 2048 a 2047 ======================================================================= ERROR: KASAN: use after free en ext4_search_dir+0xf2/0x1c0 fs/ext4/namei.c:1500 Lectura de tama\u00f1o 1 en la direcci\u00f3n ffff88803e91130f por la tarea syz-executor269/5103 CPU: 0 UID: 0 PID: 5103 Comm: syz-executor269 No contaminado 6.11.0-rc4-syzkaller #0 Nombre del hardware: PC est\u00e1ndar QEMU (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 01/04/2014 Seguimiento de llamadas:  __dump_stack lib/dump_stack.c:93 [en l\u00ednea] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119 print_address_description mm/kasan/report.c:377 [en l\u00ednea] print_report+0x169/0x550 mm/kasan/report.c:488 kasan_report+0x143/0x180 mm/kasan/report.c:601 ext4_search_dir+0xf2/0x1c0 fs/ext4/namei.c:1500 ext4_find_inline_entry+0x4be/0x5e0 fs/ext4/inline.c:1697 __ext4_find_entry+0x2b4/0x1b30 fs/ext4/namei.c:1573 ext4_lookup_entry fs/ext4/namei.c:1727 [en l\u00ednea] ext4_lookup+0x15f/0x750 fs/ext4/namei.c:1795 lookup_one_qstr_excl+0x11f/0x260 fs/namei.c:1633 filename_create+0x297/0x540 fs/namei.c:3980 do_symlinkat+0xf9/0x3a0 fs/namei.c:4587 __do_sys_symlinkat fs/namei.c:4610 [en l\u00ednea] __se_sys_symlinkat fs/namei.c:4607 [en l\u00ednea] __x64_sys_symlinkat+0x95/0xb0 fs/namei.c:4607 do_syscall_x64 arch/x86/entry/common.c:52 [en l\u00ednea] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f3e73ced469 C\u00f3digo: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u0026lt;48\u0026gt; 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fff4d40c258 EFLAGS: 00000246 ORIG_RAX: 000000000000010a RAX: ffffffffffffffda RBX: 0032656c69662f2e RCX: 00007f3e73ced469 RDX: 0000000020000200 RSI: 00000000ffffff9c RDI: 00000000200001c0 RBP: 0000000000000000 R08: 00007fff4d40c290 R09: 00007fff4d40c290 R10: 0023706f6f6c2f76 R11: 0000000000000246 R12: 00007fff4d40c27c R13: 0000000000000003 R14: 431bde82d7b634db R15: 00007fff4d40c2b0  Llamada ext4_xattr_ibody_find justo despu\u00e9s de leer el inodo con ext4_get_inode_loc conducir\u00e1 a una verificaci\u00f3n de la validez de los xattrs, evitando este problema.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"fs/ext4/inline.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"e8e948e7802a2ab05c146d3e72a39b93b5718236\",\"lessThan\":\"5b076d37e8d99918e9294bd6b35a8bbb436819b0\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e8e948e7802a2ab05c146d3e72a39b93b5718236\",\"lessThan\":\"8adf0eb4e361a9e060d54f4bd0ac9c5d85277d20\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e8e948e7802a2ab05c146d3e72a39b93b5718236\",\"lessThan\":\"7fc22c3b3ffc0e952f5e0062dd11aa6ae76affba\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e8e948e7802a2ab05c146d3e72a39b93b5718236\",\"lessThan\":\"be2e9b111e2790962cc66a177869b4e9717b4e29\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e8e948e7802a2ab05c146d3e72a39b93b5718236\",\"lessThan\":\"ea32883e4a03ed575a2eb7a66542022312bde477\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e8e948e7802a2ab05c146d3e72a39b93b5718236\",\"lessThan\":\"2a6579ef5f2576a940125729f7409cc182f1c8df\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e8e948e7802a2ab05c146d3e72a39b93b5718236\",\"lessThan\":\"371d0bacecd529f887ea2547333d9173e7bcdc0a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e8e948e7802a2ab05c146d3e72a39b93b5718236\",\"lessThan\":\"ccb8c18076e2e630fea23fbec583cdad61787fc5\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e8e948e7802a2ab05c146d3e72a39b93b5718236\",\"lessThan\":\"c6b72f5d82b1017bad80f9ebf502832fc321d796\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"fs/ext4/inline.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"3.8\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"3.8\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.19.323\",\"lessThanOrEqual\":\"4.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.285\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.227\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.168\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.113\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.54\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.10.13\",\"lessThanOrEqual\":\"6.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.11.2\",\"lessThanOrEqual\":\"6.11.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]},{\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\",\"affectedData\":[{\"vendor\":\"Siemens\",\"product\":\"RUGGEDCOM 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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-04T17:52:30+00:00",
      "cve": "CVE-2024-47701",
      "id": "CVE-2024-47701",
      "initial_release_date": "2024-10-21T00:00:00+00:00",
      "product_status:known_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ext4: avoid OOB when system.data xattr changes underneath the filesystem",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-47701.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-03T00:21:16Z",
      "cve": "CVE-2024-47701",
      "id": "CVE-2024-47701",
      "initial_release_date": "2024-10-21T15:47:22Z",
      "product_status:known_affected": "567",
      "product_status:known_not_affected": "31",
      "product_status:recommended": "681",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-47701",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-47701.json",
      "version": "91"
    },
    "vulnrichment": {
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No network or remote protocol is involved.\\nAC:L - The attacker controls both halves: the on-disk xattr bytes (backing file/removable device they own) and the cache invalidation that forces the stale inode block to be re-read (loop capacity change, BLKFLSBUF, or induced memory pressure), then issues the lookup at will; syzbot reproduces it deterministically with a C reproducer.\\nPR:L - An unprivileged local user can loop-mount their own ext4 image on typical desktop/CI systems (udisks2 loop-setup and filesystem-mount are allow_active) or supply auto-mounted removable media, and retains write access to the backing store; the lookup that triggers the OOB requires no privileges at all.\\nUI:N - In the automount/self-mount scenario the attacker performs every step themselves \\u2014 attach or loop-mount the image, mutate the backing bytes, invalidate the cache, then look up a name \\u2014 with no action required from any other user.\\nS:U - The out-of-bounds access and its consequences are confined to the kernel\u0027s own memory and the same security authority; no VM, IOMMU, or sandbox boundary is crossed.\\nC:H - e_value_offs is a 16-bit attacker-chosen value, so ext4_search_dir reads up to ~64KB past the inode-table buffer into adjacent slab/page-cache memory; the same unvalidated offset is used by ext4_read_inline_data\u0027s memcpy, and matched \\\"directory entries\\\" expose adjacent kernel memory contents (names, inode numbers) to userspace.\\nI:H - The out-of-bounds entry pointer is handed to writers \\u2014 ext4_setent() stores an attacker-chosen inode number plus file_type at that address during rename, and ext4_generic_delete_entry() zeroes/rewrites it on unlink \\u2014 giving a semi-controlled out-of-bounds kernel write that is leverageable against heap-sprayed adjacent objects.\\nA:H - The out-of-bounds access is reported by KASAN as a use-after-free read and can hit unmapped or poisoned memory and corrupt neighbouring kernel objects, resulting in an oops or panic that takes down the whole system.\"}]}], \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"e8e948e7802a2ab05c146d3e72a39b93b5718236\", \"lessThan\": \"5b076d37e8d99918e9294bd6b35a8bbb436819b0\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e8e948e7802a2ab05c146d3e72a39b93b5718236\", \"lessThan\": \"8adf0eb4e361a9e060d54f4bd0ac9c5d85277d20\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e8e948e7802a2ab05c146d3e72a39b93b5718236\", \"lessThan\": \"7fc22c3b3ffc0e952f5e0062dd11aa6ae76affba\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e8e948e7802a2ab05c146d3e72a39b93b5718236\", \"lessThan\": \"be2e9b111e2790962cc66a177869b4e9717b4e29\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e8e948e7802a2ab05c146d3e72a39b93b5718236\", \"lessThan\": \"ea32883e4a03ed575a2eb7a66542022312bde477\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e8e948e7802a2ab05c146d3e72a39b93b5718236\", \"lessThan\": \"2a6579ef5f2576a940125729f7409cc182f1c8df\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e8e948e7802a2ab05c146d3e72a39b93b5718236\", \"lessThan\": \"371d0bacecd529f887ea2547333d9173e7bcdc0a\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e8e948e7802a2ab05c146d3e72a39b93b5718236\", \"lessThan\": \"ccb8c18076e2e630fea23fbec583cdad61787fc5\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e8e948e7802a2ab05c146d3e72a39b93b5718236\", \"lessThan\": \"c6b72f5d82b1017bad80f9ebf502832fc321d796\", \"versionType\": \"git\"}], \"programFiles\": [\"fs/ext4/inline.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"3.8\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"3.8\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"4.19.323\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.285\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.227\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.168\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.113\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.54\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.10.13\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.10.*\"}, {\"status\": \"unaffected\", \"version\": \"6.11.2\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.11.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"fs/ext4/inline.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/5b076d37e8d99918e9294bd6b35a8bbb436819b0\"}, {\"url\": \"https://git.kernel.org/stable/c/8adf0eb4e361a9e060d54f4bd0ac9c5d85277d20\"}, {\"url\": \"https://git.kernel.org/stable/c/7fc22c3b3ffc0e952f5e0062dd11aa6ae76affba\"}, {\"url\": \"https://git.kernel.org/stable/c/be2e9b111e2790962cc66a177869b4e9717b4e29\"}, {\"url\": \"https://git.kernel.org/stable/c/ea32883e4a03ed575a2eb7a66542022312bde477\"}, {\"url\": \"https://git.kernel.org/stable/c/2a6579ef5f2576a940125729f7409cc182f1c8df\"}, {\"url\": \"https://git.kernel.org/stable/c/371d0bacecd529f887ea2547333d9173e7bcdc0a\"}, {\"url\": \"https://git.kernel.org/stable/c/ccb8c18076e2e630fea23fbec583cdad61787fc5\"}, {\"url\": \"https://git.kernel.org/stable/c/c6b72f5d82b1017bad80f9ebf502832fc321d796\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\next4: avoid OOB when system.data xattr changes underneath the filesystem\\n\\nWhen looking up for an entry in an inlined directory, if e_value_offs is\\nchanged underneath the filesystem by some change in the block device, it\\nwill lead to an out-of-bounds access that KASAN detects as an UAF.\\n\\nEXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none.\\nloop0: detected capacity change from 2048 to 2047\\n==================================================================\\nBUG: KASAN: use-after-free in ext4_search_dir+0xf2/0x1c0 fs/ext4/namei.c:1500\\nRead of size 1 at addr ffff88803e91130f by task syz-executor269/5103\\n\\nCPU: 0 UID: 0 PID: 5103 Comm: syz-executor269 Not tainted 6.11.0-rc4-syzkaller #0\\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014\\nCall Trace:\\n \u003cTASK\u003e\\n __dump_stack lib/dump_stack.c:93 [inline]\\n dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119\\n print_address_description mm/kasan/report.c:377 [inline]\\n print_report+0x169/0x550 mm/kasan/report.c:488\\n kasan_report+0x143/0x180 mm/kasan/report.c:601\\n ext4_search_dir+0xf2/0x1c0 fs/ext4/namei.c:1500\\n ext4_find_inline_entry+0x4be/0x5e0 fs/ext4/inline.c:1697\\n __ext4_find_entry+0x2b4/0x1b30 fs/ext4/namei.c:1573\\n ext4_lookup_entry fs/ext4/namei.c:1727 [inline]\\n ext4_lookup+0x15f/0x750 fs/ext4/namei.c:1795\\n lookup_one_qstr_excl+0x11f/0x260 fs/namei.c:1633\\n filename_create+0x297/0x540 fs/namei.c:3980\\n do_symlinkat+0xf9/0x3a0 fs/namei.c:4587\\n __do_sys_symlinkat fs/namei.c:4610 [inline]\\n __se_sys_symlinkat fs/namei.c:4607 [inline]\\n __x64_sys_symlinkat+0x95/0xb0 fs/namei.c:4607\\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\nRIP: 0033:0x7f3e73ced469\\nCode: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48\\nRSP: 002b:00007fff4d40c258 EFLAGS: 00000246 ORIG_RAX: 000000000000010a\\nRAX: ffffffffffffffda RBX: 0032656c69662f2e RCX: 00007f3e73ced469\\nRDX: 0000000020000200 RSI: 00000000ffffff9c RDI: 00000000200001c0\\nRBP: 0000000000000000 R08: 00007fff4d40c290 R09: 00007fff4d40c290\\nR10: 0023706f6f6c2f76 R11: 0000000000000246 R12: 00007fff4d40c27c\\nR13: 0000000000000003 R14: 431bde82d7b634db R15: 00007fff4d40c2b0\\n \u003c/TASK\u003e\\n\\nCalling ext4_xattr_ibody_find right after reading the inode with\\next4_get_inode_loc will lead to a check of the validity of the xattrs,\\navoiding this problem.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.323\", \"versionStartIncluding\": \"3.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.285\", \"versionStartIncluding\": \"3.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.227\", \"versionStartIncluding\": \"3.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.168\", \"versionStartIncluding\": \"3.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.113\", \"versionStartIncluding\": \"3.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.54\", \"versionStartIncluding\": \"3.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.10.13\", \"versionStartIncluding\": \"3.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.11.2\", \"versionStartIncluding\": \"3.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12\", \"versionStartIncluding\": \"3.8\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-05T11:39:32.569Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-47701\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-05T11:39:32.569Z\", \"dateReserved\": \"2024-09-30T16:00:12.945Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-10-21T11:53:37.276Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.