CVE-2022-49349 (GCVE-0-2022-49349)
Vulnerability from cvelistv5
Published
2025-02-26 02:11
Modified
2025-05-04 08:35
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: ext4: fix use-after-free in ext4_rename_dir_prepare We got issue as follows: EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue ext4_get_first_dir_block: bh->b_data=0xffff88810bee6000 len=34478 ext4_get_first_dir_block: *parent_de=0xffff88810beee6ae bh->b_data=0xffff88810bee6000 ext4_rename_dir_prepare: [1] parent_de=0xffff88810beee6ae ================================================================== BUG: KASAN: use-after-free in ext4_rename_dir_prepare+0x152/0x220 Read of size 4 at addr ffff88810beee6ae by task rep/1895 CPU: 13 PID: 1895 Comm: rep Not tainted 5.10.0+ #241 Call Trace: dump_stack+0xbe/0xf9 print_address_description.constprop.0+0x1e/0x220 kasan_report.cold+0x37/0x7f ext4_rename_dir_prepare+0x152/0x220 ext4_rename+0xf44/0x1ad0 ext4_rename2+0x11c/0x170 vfs_rename+0xa84/0x1440 do_renameat2+0x683/0x8f0 __x64_sys_renameat+0x53/0x60 do_syscall_64+0x33/0x40 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f45a6fc41c9 RSP: 002b:00007ffc5a470218 EFLAGS: 00000246 ORIG_RAX: 0000000000000108 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f45a6fc41c9 RDX: 0000000000000005 RSI: 0000000020000180 RDI: 0000000000000005 RBP: 00007ffc5a470240 R08: 00007ffc5a470160 R09: 0000000020000080 R10: 00000000200001c0 R11: 0000000000000246 R12: 0000000000400bb0 R13: 00007ffc5a470320 R14: 0000000000000000 R15: 0000000000000000 The buggy address belongs to the page: page:00000000440015ce refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x10beee flags: 0x200000000000000() raw: 0200000000000000 ffffea00043ff4c8 ffffea0004325608 0000000000000000 raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88810beee580: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff88810beee600: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff >ffff88810beee680: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff88810beee700: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff88810beee780: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ================================================================== Disabling lock debugging due to kernel taint ext4_rename_dir_prepare: [2] parent_de->inode=3537895424 ext4_rename_dir_prepare: [3] dir=0xffff888124170140 ext4_rename_dir_prepare: [4] ino=2 ext4_rename_dir_prepare: ent->dir->i_ino=2 parent=-757071872 Reason is first directory entry which 'rec_len' is 34478, then will get illegal parent entry. Now, we do not check directory entry after read directory block in 'ext4_get_first_dir_block'. To solve this issue, check directory entry in 'ext4_get_first_dir_block'. [ Trigger an ext4_error() instead of just warning if the directory is missing a '.' or '..' entry. Also make sure we return an error code if the file system is corrupted. -TYT ]
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0be698ecbe4471fcad80e81ec6a05001421041b3Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0ff38b99fa075ddd246487a28cb9af049f4ceef1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/10801095224de0d0ab06ae60698680c1f883a3aePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1a3a15bf6f9963d755270cbdb282863b84839195Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/364380c00912bed9b5d99eb485018360b0ecf64fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4a2bea60cf7ff957b3eda0b17750d483876a02faPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/97f802a652a749422dede32071d29a53cf4bd034Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dd887f83ea54aea5b780a84527e23ab95f777fedPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/eaecf7ebfd5dd09038a80b14be46b844f54cfc5cPatch
Impacted products
Vendor Product Version
Linux Linux Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
 Create a notification for this product.
   Linux Linux Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 7.8,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2022-49349",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-02-27T18:16:42.619044Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-416",
                "description": "CWE-416 Use After Free",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-02-27T18:22:33.920Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/ext4/namei.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "1a3a15bf6f9963d755270cbdb282863b84839195",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "97f802a652a749422dede32071d29a53cf4bd034",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "10801095224de0d0ab06ae60698680c1f883a3ae",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "eaecf7ebfd5dd09038a80b14be46b844f54cfc5c",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "dd887f83ea54aea5b780a84527e23ab95f777fed",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "364380c00912bed9b5d99eb485018360b0ecf64f",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "0ff38b99fa075ddd246487a28cb9af049f4ceef1",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "4a2bea60cf7ff957b3eda0b17750d483876a02fa",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "0be698ecbe4471fcad80e81ec6a05001421041b3",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/ext4/namei.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThanOrEqual": "4.9.*",
              "status": "unaffected",
              "version": "4.9.318",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.283",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.247",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.198",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.121",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.46",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.17.*",
              "status": "unaffected",
              "version": "5.17.14",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.18.*",
              "status": "unaffected",
              "version": "5.18.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.9.318",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.14.283",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.247",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.198",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.121",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.46",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.17.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.18.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.19",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix use-after-free in ext4_rename_dir_prepare\n\nWe got issue as follows:\nEXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue\next4_get_first_dir_block: bh-\u003eb_data=0xffff88810bee6000 len=34478\next4_get_first_dir_block: *parent_de=0xffff88810beee6ae bh-\u003eb_data=0xffff88810bee6000\next4_rename_dir_prepare: [1] parent_de=0xffff88810beee6ae\n==================================================================\nBUG: KASAN: use-after-free in ext4_rename_dir_prepare+0x152/0x220\nRead of size 4 at addr ffff88810beee6ae by task rep/1895\n\nCPU: 13 PID: 1895 Comm: rep Not tainted 5.10.0+ #241\nCall Trace:\n dump_stack+0xbe/0xf9\n print_address_description.constprop.0+0x1e/0x220\n kasan_report.cold+0x37/0x7f\n ext4_rename_dir_prepare+0x152/0x220\n ext4_rename+0xf44/0x1ad0\n ext4_rename2+0x11c/0x170\n vfs_rename+0xa84/0x1440\n do_renameat2+0x683/0x8f0\n __x64_sys_renameat+0x53/0x60\n do_syscall_64+0x33/0x40\n entry_SYSCALL_64_after_hwframe+0x44/0xa9\nRIP: 0033:0x7f45a6fc41c9\nRSP: 002b:00007ffc5a470218 EFLAGS: 00000246 ORIG_RAX: 0000000000000108\nRAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f45a6fc41c9\nRDX: 0000000000000005 RSI: 0000000020000180 RDI: 0000000000000005\nRBP: 00007ffc5a470240 R08: 00007ffc5a470160 R09: 0000000020000080\nR10: 00000000200001c0 R11: 0000000000000246 R12: 0000000000400bb0\nR13: 00007ffc5a470320 R14: 0000000000000000 R15: 0000000000000000\n\nThe buggy address belongs to the page:\npage:00000000440015ce refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x10beee\nflags: 0x200000000000000()\nraw: 0200000000000000 ffffea00043ff4c8 ffffea0004325608 0000000000000000\nraw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000\npage dumped because: kasan: bad access detected\n\nMemory state around the buggy address:\n ffff88810beee580: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff\n ffff88810beee600: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff\n\u003effff88810beee680: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff\n                                  ^\n ffff88810beee700: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff\n ffff88810beee780: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff\n==================================================================\nDisabling lock debugging due to kernel taint\next4_rename_dir_prepare: [2] parent_de-\u003einode=3537895424\next4_rename_dir_prepare: [3] dir=0xffff888124170140\next4_rename_dir_prepare: [4] ino=2\next4_rename_dir_prepare: ent-\u003edir-\u003ei_ino=2 parent=-757071872\n\nReason is first directory entry which \u0027rec_len\u0027 is 34478, then will get illegal\nparent entry. Now, we do not check directory entry after read directory block\nin \u0027ext4_get_first_dir_block\u0027.\nTo solve this issue, check directory entry in \u0027ext4_get_first_dir_block\u0027.\n\n[ Trigger an ext4_error() instead of just warning if the directory is\n  missing a \u0027.\u0027 or \u0027..\u0027 entry.   Also make sure we return an error code\n  if the file system is corrupted.  -TYT ]"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T08:35:50.114Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/1a3a15bf6f9963d755270cbdb282863b84839195"
        },
        {
          "url": "https://git.kernel.org/stable/c/97f802a652a749422dede32071d29a53cf4bd034"
        },
        {
          "url": "https://git.kernel.org/stable/c/10801095224de0d0ab06ae60698680c1f883a3ae"
        },
        {
          "url": "https://git.kernel.org/stable/c/eaecf7ebfd5dd09038a80b14be46b844f54cfc5c"
        },
        {
          "url": "https://git.kernel.org/stable/c/dd887f83ea54aea5b780a84527e23ab95f777fed"
        },
        {
          "url": "https://git.kernel.org/stable/c/364380c00912bed9b5d99eb485018360b0ecf64f"
        },
        {
          "url": "https://git.kernel.org/stable/c/0ff38b99fa075ddd246487a28cb9af049f4ceef1"
        },
        {
          "url": "https://git.kernel.org/stable/c/4a2bea60cf7ff957b3eda0b17750d483876a02fa"
        },
        {
          "url": "https://git.kernel.org/stable/c/0be698ecbe4471fcad80e81ec6a05001421041b3"
        }
      ],
      "title": "ext4: fix use-after-free in ext4_rename_dir_prepare",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49349",
    "datePublished": "2025-02-26T02:11:02.993Z",
    "dateReserved": "2025-02-26T02:08:31.544Z",
    "dateUpdated": "2025-05-04T08:35:50.114Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-49349\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-02-26T07:01:11.623\",\"lastModified\":\"2025-03-25T14:51:05.100\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\next4: fix use-after-free in ext4_rename_dir_prepare\\n\\nWe got issue as follows:\\nEXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue\\next4_get_first_dir_block: bh-\u003eb_data=0xffff88810bee6000 len=34478\\next4_get_first_dir_block: *parent_de=0xffff88810beee6ae bh-\u003eb_data=0xffff88810bee6000\\next4_rename_dir_prepare: [1] parent_de=0xffff88810beee6ae\\n==================================================================\\nBUG: KASAN: use-after-free in ext4_rename_dir_prepare+0x152/0x220\\nRead of size 4 at addr ffff88810beee6ae by task rep/1895\\n\\nCPU: 13 PID: 1895 Comm: rep Not tainted 5.10.0+ #241\\nCall Trace:\\n dump_stack+0xbe/0xf9\\n print_address_description.constprop.0+0x1e/0x220\\n kasan_report.cold+0x37/0x7f\\n ext4_rename_dir_prepare+0x152/0x220\\n ext4_rename+0xf44/0x1ad0\\n ext4_rename2+0x11c/0x170\\n vfs_rename+0xa84/0x1440\\n do_renameat2+0x683/0x8f0\\n __x64_sys_renameat+0x53/0x60\\n do_syscall_64+0x33/0x40\\n entry_SYSCALL_64_after_hwframe+0x44/0xa9\\nRIP: 0033:0x7f45a6fc41c9\\nRSP: 002b:00007ffc5a470218 EFLAGS: 00000246 ORIG_RAX: 0000000000000108\\nRAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f45a6fc41c9\\nRDX: 0000000000000005 RSI: 0000000020000180 RDI: 0000000000000005\\nRBP: 00007ffc5a470240 R08: 00007ffc5a470160 R09: 0000000020000080\\nR10: 00000000200001c0 R11: 0000000000000246 R12: 0000000000400bb0\\nR13: 00007ffc5a470320 R14: 0000000000000000 R15: 0000000000000000\\n\\nThe buggy address belongs to the page:\\npage:00000000440015ce refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x10beee\\nflags: 0x200000000000000()\\nraw: 0200000000000000 ffffea00043ff4c8 ffffea0004325608 0000000000000000\\nraw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000\\npage dumped because: kasan: bad access detected\\n\\nMemory state around the buggy address:\\n ffff88810beee580: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff\\n ffff88810beee600: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff\\n\u003effff88810beee680: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff\\n                                  ^\\n ffff88810beee700: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff\\n ffff88810beee780: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff\\n==================================================================\\nDisabling lock debugging due to kernel taint\\next4_rename_dir_prepare: [2] parent_de-\u003einode=3537895424\\next4_rename_dir_prepare: [3] dir=0xffff888124170140\\next4_rename_dir_prepare: [4] ino=2\\next4_rename_dir_prepare: ent-\u003edir-\u003ei_ino=2 parent=-757071872\\n\\nReason is first directory entry which \u0027rec_len\u0027 is 34478, then will get illegal\\nparent entry. Now, we do not check directory entry after read directory block\\nin \u0027ext4_get_first_dir_block\u0027.\\nTo solve this issue, check directory entry in \u0027ext4_get_first_dir_block\u0027.\\n\\n[ Trigger an ext4_error() instead of just warning if the directory is\\n  missing a \u0027.\u0027 or \u0027..\u0027 entry.   Also make sure we return an error code\\n  if the file system is corrupted.  -TYT ]\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ext4: se corrige el use-after-free en ext4_rename_dir_prepare Tuvimos el siguiente problema: EXT4-fs (loop0): sistema de archivos montado sin diario. Opciones: ,errores=continuar ext4_get_first_dir_block: bh-\u0026gt;b_data=0xffff88810bee6000 len=34478 ext4_get_first_dir_block: *parent_de=0xffff88810beee6ae bh-\u0026gt;b_data=0xffff88810bee6000 ext4_rename_dir_prepare: [1] parent_de=0xffff88810beee6ae =================================================================== ERROR: KASAN: use-after-free en ext4_rename_dir_prepare+0x152/0x220 Lectura de tama\u00f1o 4 en la direcci\u00f3n ffff88810beee6ae por tarea rep/1895 CPU: 13 PID: 1895 Comm: rep No contaminado 5.10.0+ #241 Seguimiento de llamadas: dump_stack+0xbe/0xf9 print_address_description.constprop.0+0x1e/0x220 kasan_report.cold+0x37/0x7f ext4_rename_dir_prepare+0x152/0x220 ext4_rename+0xf44/0x1ad0 ext4_rename2+0x11c/0x170 vfs_rename+0xa84/0x1440 do_renameat2+0x683/0x8f0 __x64_sys_renameat+0x53/0x60 do_syscall_64+0x33/0x40 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f45a6fc41c9 RSP: 002b:00007ffc5a470218 EFLAGS: 00000246 ORIG_RAX: 0000000000000108 RAX: ffffffffffffffda RBX: 000000000000000 RCX: 00007f45a6fc41c9 RDX: 0000000000000005 RSI: 0000000020000180 RDI: 0000000000000005 RBP: 00007ffc5a470240 R08: 00007ffc5a470160 R09: 0000000020000080 R10: 00000000200001c0 R11: 0000000000000246 R12: 0000000000400bb0 R13: 00007ffc5a470320 R14: 0000000000000000 R15: 0000000000000000 La direcci\u00f3n con errores pertenece a la p\u00e1gina: page:00000000440015ce refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x10beee flags: 0x200000000000000() raw: 0200000000000000 ffffea00043ff4c8 ffffea0004325608 0000000000000000 raw: 000000000000001 000000000000000 00000000ffffffff 000000000000000 p\u00e1gina volcada porque: kasan: mal acceso detectado Estado de la memoria alrededor de la direcci\u00f3n con errores: ffff88810beee580: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff88810beee600: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff \u0026gt;ffff88810beee680: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff88810beee700: ff ff ff ff ff ff ff ff ff ff ff ff ffff88810beee780: ff ff ff ff ff ff ff ff ff ff ff ff ff ====================================================================== Desactivar bloqueo depuraci\u00f3n debido a la corrupci\u00f3n del kernel ext4_rename_dir_prepare: [2] parent_de-\u0026gt;inode=3537895424 ext4_rename_dir_prepare: [3] dir=0xffff888124170140 ext4_rename_dir_prepare: [4] ino=2 ext4_rename_dir_prepare: ent-\u0026gt;dir-\u0026gt;i_ino=2 parent=-757071872 El motivo es que la primera entrada del directorio cuyo \u0027rec_len\u0027 es 34478, obtendr\u00e1 una entrada principal ilegal. Ahora, no verificamos la entrada del directorio despu\u00e9s de leer el bloque del directorio en \u0027ext4_get_first_dir_block\u0027. Para resolver este problema, verifique la entrada del directorio en \u0027ext4_get_first_dir_block\u0027. [ Active un ext4_error() en lugar de solo advertir si al directorio le falta una entrada \u0027.\u0027 o \u0027..\u0027. Tambi\u00e9n aseg\u00farese de que devolvamos un c\u00f3digo de error si el sistema de archivos est\u00e1 da\u00f1ado. -\u00a1 ...\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"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}]},\"weaknesses\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"4.9.318\",\"matchCriteriaId\":\"0D4D4067-974D-4560-8320-22FDA399E3F9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.10\",\"versionEndExcluding\":\"4.14.283\",\"matchCriteriaId\":\"D6823775-2653-4644-A0D4-4E6E68F10C65\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.15\",\"versionEndExcluding\":\"4.19.247\",\"matchCriteriaId\":\"B8CFA0F4-2D75-41F4-9753-87944A08B53B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.20\",\"versionEndExcluding\":\"5.4.198\",\"matchCriteriaId\":\"3EC49633-14DE-4EBD-BB80-76AE2E3EABB9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.121\",\"matchCriteriaId\":\"34ACD872-E5BC-401C-93D5-B357A62426E0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.46\",\"matchCriteriaId\":\"20D41697-0E8B-4B7D-8842-F17BF2AA21E1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"5.17.14\",\"matchCriteriaId\":\"15E2DD33-2255-4B76-9C15-04FF8CBAB252\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.18\",\"versionEndExcluding\":\"5.18.3\",\"matchCriteriaId\":\"8E122216-2E9E-4B3E-B7B8-D575A45BA3C2\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0be698ecbe4471fcad80e81ec6a05001421041b3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/0ff38b99fa075ddd246487a28cb9af049f4ceef1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/10801095224de0d0ab06ae60698680c1f883a3ae\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/1a3a15bf6f9963d755270cbdb282863b84839195\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/364380c00912bed9b5d99eb485018360b0ecf64f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/4a2bea60cf7ff957b3eda0b17750d483876a02fa\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/97f802a652a749422dede32071d29a53cf4bd034\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/dd887f83ea54aea5b780a84527e23ab95f777fed\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/eaecf7ebfd5dd09038a80b14be46b844f54cfc5c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "vulnrichment": {
      "containers": "{\"cna\": {\"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-02-26T02:11:02.993Z\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\next4: fix use-after-free in ext4_rename_dir_prepare\\n\\nWe got issue as follows:\\nEXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue\\next4_get_first_dir_block: bh-\u003eb_data=0xffff88810bee6000 len=34478\\next4_get_first_dir_block: *parent_de=0xffff88810beee6ae bh-\u003eb_data=0xffff88810bee6000\\next4_rename_dir_prepare: [1] parent_de=0xffff88810beee6ae\\n==================================================================\\nBUG: KASAN: use-after-free in ext4_rename_dir_prepare+0x152/0x220\\nRead of size 4 at addr ffff88810beee6ae by task rep/1895\\n\\nCPU: 13 PID: 1895 Comm: rep Not tainted 5.10.0+ #241\\nCall Trace:\\n dump_stack+0xbe/0xf9\\n print_address_description.constprop.0+0x1e/0x220\\n kasan_report.cold+0x37/0x7f\\n ext4_rename_dir_prepare+0x152/0x220\\n ext4_rename+0xf44/0x1ad0\\n ext4_rename2+0x11c/0x170\\n vfs_rename+0xa84/0x1440\\n do_renameat2+0x683/0x8f0\\n __x64_sys_renameat+0x53/0x60\\n do_syscall_64+0x33/0x40\\n entry_SYSCALL_64_after_hwframe+0x44/0xa9\\nRIP: 0033:0x7f45a6fc41c9\\nRSP: 002b:00007ffc5a470218 EFLAGS: 00000246 ORIG_RAX: 0000000000000108\\nRAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f45a6fc41c9\\nRDX: 0000000000000005 RSI: 0000000020000180 RDI: 0000000000000005\\nRBP: 00007ffc5a470240 R08: 00007ffc5a470160 R09: 0000000020000080\\nR10: 00000000200001c0 R11: 0000000000000246 R12: 0000000000400bb0\\nR13: 00007ffc5a470320 R14: 0000000000000000 R15: 0000000000000000\\n\\nThe buggy address belongs to the page:\\npage:00000000440015ce refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x10beee\\nflags: 0x200000000000000()\\nraw: 0200000000000000 ffffea00043ff4c8 ffffea0004325608 0000000000000000\\nraw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000\\npage dumped because: kasan: bad access detected\\n\\nMemory state around the buggy address:\\n ffff88810beee580: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff\\n ffff88810beee600: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff\\n\u003effff88810beee680: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff\\n                                  ^\\n ffff88810beee700: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff\\n ffff88810beee780: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff\\n==================================================================\\nDisabling lock debugging due to kernel taint\\next4_rename_dir_prepare: [2] parent_de-\u003einode=3537895424\\next4_rename_dir_prepare: [3] dir=0xffff888124170140\\next4_rename_dir_prepare: [4] ino=2\\next4_rename_dir_prepare: ent-\u003edir-\u003ei_ino=2 parent=-757071872\\n\\nReason is first directory entry which \u0027rec_len\u0027 is 34478, then will get illegal\\nparent entry. Now, we do not check directory entry after read directory block\\nin \u0027ext4_get_first_dir_block\u0027.\\nTo solve this issue, check directory entry in \u0027ext4_get_first_dir_block\u0027.\\n\\n[ Trigger an ext4_error() instead of just warning if the directory is\\n  missing a \u0027.\u0027 or \u0027..\u0027 entry.   Also make sure we return an error code\\n  if the file system is corrupted.  -TYT ]\"}], \"affected\": [{\"product\": \"Linux\", \"vendor\": \"Linux\", \"defaultStatus\": \"unaffected\", \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"programFiles\": [\"fs/ext4/namei.c\"], \"versions\": [{\"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"1a3a15bf6f9963d755270cbdb282863b84839195\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"97f802a652a749422dede32071d29a53cf4bd034\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"10801095224de0d0ab06ae60698680c1f883a3ae\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"eaecf7ebfd5dd09038a80b14be46b844f54cfc5c\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"dd887f83ea54aea5b780a84527e23ab95f777fed\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"364380c00912bed9b5d99eb485018360b0ecf64f\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"0ff38b99fa075ddd246487a28cb9af049f4ceef1\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"4a2bea60cf7ff957b3eda0b17750d483876a02fa\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"0be698ecbe4471fcad80e81ec6a05001421041b3\", \"status\": \"affected\", \"versionType\": \"git\"}]}, {\"product\": \"Linux\", \"vendor\": \"Linux\", \"defaultStatus\": \"affected\", \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"programFiles\": [\"fs/ext4/namei.c\"], \"versions\": [{\"version\": \"4.9.318\", \"lessThanOrEqual\": \"4.9.*\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"4.14.283\", \"lessThanOrEqual\": \"4.14.*\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"4.19.247\", \"lessThanOrEqual\": \"4.19.*\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"5.4.198\", \"lessThanOrEqual\": \"5.4.*\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"5.10.121\", \"lessThanOrEqual\": \"5.10.*\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"5.15.46\", \"lessThanOrEqual\": \"5.15.*\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"5.17.14\", \"lessThanOrEqual\": \"5.17.*\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"5.18.3\", \"lessThanOrEqual\": \"5.18.*\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"5.19\", \"lessThanOrEqual\": \"*\", \"status\": \"unaffected\", \"versionType\": \"original_commit_for_fix\"}]}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/1a3a15bf6f9963d755270cbdb282863b84839195\"}, {\"url\": \"https://git.kernel.org/stable/c/97f802a652a749422dede32071d29a53cf4bd034\"}, {\"url\": \"https://git.kernel.org/stable/c/10801095224de0d0ab06ae60698680c1f883a3ae\"}, {\"url\": \"https://git.kernel.org/stable/c/eaecf7ebfd5dd09038a80b14be46b844f54cfc5c\"}, {\"url\": \"https://git.kernel.org/stable/c/dd887f83ea54aea5b780a84527e23ab95f777fed\"}, {\"url\": \"https://git.kernel.org/stable/c/364380c00912bed9b5d99eb485018360b0ecf64f\"}, {\"url\": \"https://git.kernel.org/stable/c/0ff38b99fa075ddd246487a28cb9af049f4ceef1\"}, {\"url\": \"https://git.kernel.org/stable/c/4a2bea60cf7ff957b3eda0b17750d483876a02fa\"}, {\"url\": \"https://git.kernel.org/stable/c/0be698ecbe4471fcad80e81ec6a05001421041b3\"}], \"title\": \"ext4: fix use-after-free in ext4_rename_dir_prepare\", \"x_generator\": {\"engine\": \"bippy-5f407fcff5a0\"}}, \"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.8, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-49349\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-02-27T18:16:42.619044Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-416\", \"description\": \"CWE-416 Use After Free\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-02-27T18:16:44.363Z\"}}]}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-49349\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"state\": \"PUBLISHED\", \"assignerShortName\": \"Linux\", \"dateReserved\": \"2025-02-26T02:08:31.544Z\", \"datePublished\": \"2025-02-26T02:11:02.993Z\", \"dateUpdated\": \"2025-02-27T18:22:33.920Z\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.