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CVE-2026-46055 (GCVE-0-2026-46055)

Vulnerability from cvelistv5 – Published: 2026-05-27 12:57 – Updated: 2026-08-05 12:29
VLAI
Title
apparmor: Fix string overrun due to missing termination
Summary
In the Linux kernel, the following vulnerability has been resolved: apparmor: Fix string overrun due to missing termination When booting Ubuntu 26.04 with Linux 7.0-rc4 on an ARM64 Qualcomm Snapdragon X1 we see a string buffer overrun: BUG: KASAN: slab-out-of-bounds in aa_dfa_match (security/apparmor/match.c:535) Read of size 1 at addr ffff0008901cc000 by task snap-update-ns/2120 CPU: 5 UID: 60578 PID: 2120 Comm: snap-update-ns Not tainted 7.0.0-rc4+ #22 PREEMPTLAZY Hardware name: LENOVO 83ED/LNVNB161216, BIOS NHCN60WW 09/11/2025 Call trace: show_stack (arch/arm64/kernel/stacktrace.c:501) (C) dump_stack_lvl (lib/dump_stack.c:122) print_report (mm/kasan/report.c:379 mm/kasan/report.c:482) kasan_report (mm/kasan/report.c:597) __asan_report_load1_noabort (mm/kasan/report_generic.c:378) aa_dfa_match (security/apparmor/match.c:535) match_mnt_path_str (security/apparmor/mount.c:244 security/apparmor/mount.c:336) match_mnt (security/apparmor/mount.c:371) aa_bind_mount (security/apparmor/mount.c:447 (discriminator 4)) apparmor_sb_mount (security/apparmor/lsm.c:719 (discriminator 1)) security_sb_mount (security/security.c:1062 (discriminator 31)) path_mount (fs/namespace.c:4101) __arm64_sys_mount (fs/namespace.c:4172 fs/namespace.c:4361 fs/namespace.c:4338 fs/namespace.c:4338) invoke_syscall.constprop.0 (arch/arm64/kernel/syscall.c:35 arch/arm64/kernel/syscall.c:49) el0_svc_common.constprop.0 (./include/linux/thread_info.h:142 (discriminator 2) arch/arm64/kernel/syscall.c:140 (discriminator 2)) do_el0_svc (arch/arm64/kernel/syscall.c:152) el0_svc (arch/arm64/kernel/entry-common.c:80 arch/arm64/kernel/entry-common.c:725) el0t_64_sync_handler (arch/arm64/kernel/entry-common.c:744) el0t_64_sync (arch/arm64/kernel/entry.S:596) Allocated by task 2120: kasan_save_stack (mm/kasan/common.c:58) kasan_save_track (./arch/arm64/include/asm/current.h:19 mm/kasan/common.c:70 mm/kasan/common.c:79) kasan_save_alloc_info (mm/kasan/generic.c:571) __kasan_kmalloc (mm/kasan/common.c:419) __kmalloc_noprof (./include/linux/kasan.h:263 mm/slub.c:5260 mm/slub.c:5272) aa_get_buffer (security/apparmor/lsm.c:2201) aa_bind_mount (security/apparmor/mount.c:442) apparmor_sb_mount (security/apparmor/lsm.c:719 (discriminator 1)) security_sb_mount (security/security.c:1062 (discriminator 31)) path_mount (fs/namespace.c:4101) __arm64_sys_mount (fs/namespace.c:4172 fs/namespace.c:4361 fs/namespace.c:4338 fs/namespace.c:4338) invoke_syscall.constprop.0 (arch/arm64/kernel/syscall.c:35 arch/arm64/kernel/syscall.c:49) el0_svc_common.constprop.0 (./include/linux/thread_info.h:142 (discriminator 2) arch/arm64/kernel/syscall.c:140 (discriminator 2)) do_el0_svc (arch/arm64/kernel/syscall.c:152) el0_svc (arch/arm64/kernel/entry-common.c:80 arch/arm64/kernel/entry-common.c:725) el0t_64_sync_handler (arch/arm64/kernel/entry-common.c:744) el0t_64_sync (arch/arm64/kernel/entry.S:596) The buggy address belongs to the object at ffff0008901ca000 which belongs to the cache kmalloc-rnd-06-8k of size 8192 The buggy address is located 0 bytes to the right of allocated 8192-byte region [ffff0008901ca000, ffff0008901cc000) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x9101c8 head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:-1 pincount:0 flags: 0x8000000000000040(head|zone=2) page_type: f5(slab) raw: 8000000000000040 ffff000800016c40 fffffdffe2d14e10 ffff000800015c70 raw: 0000000000000000 0000000800010001 00000000f5000000 0000000000000000 head: 8000000000000040 ffff000800016c40 fffffdffe2d14e10 ffff000800015c70 head: 0000000000000000 0000000800010001 00000000f5000000 0000000000000000 head: 8000000000000003 fffffdffe2407201 fffffdffffffffff 00000000ffffffff head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0008901cbf00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff0008 ---truncated---
Severity
7.1 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 93d4dbdc8da0b8a3ba86f4a08868084f8da872e1 , < 4b877ef27adc8ec187b0418629169856e7264e01 (git)
Affected: 93d4dbdc8da0b8a3ba86f4a08868084f8da872e1 , < 828bf7929bedcb79b560b5b4e44f22abee07d31b (git)
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Linux Linux Affected: 7.0
Unaffected: 0 , < 7.0 (semver)
Unaffected: 7.0.4 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "security/apparmor/path.c"
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
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              "status": "affected",
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              "versionType": "git"
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              "status": "affected",
              "version": "93d4dbdc8da0b8a3ba86f4a08868084f8da872e1",
              "versionType": "git"
            }
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          "product": "Linux",
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          ],
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          "vendor": "Linux",
          "versions": [
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              "version": "7.0.4",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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                  "versionEndExcluding": "7.0.4",
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                  "vulnerable": true
                },
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                  "versionStartIncluding": "7.0",
                  "vulnerable": true
                }
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\napparmor: Fix string overrun due to missing termination\n\nWhen booting Ubuntu 26.04 with Linux 7.0-rc4 on an ARM64 Qualcomm\nSnapdragon X1 we see a string buffer overrun:\n\nBUG: KASAN: slab-out-of-bounds in aa_dfa_match (security/apparmor/match.c:535)\nRead of size 1 at addr ffff0008901cc000 by task snap-update-ns/2120\n\nCPU: 5 UID: 60578 PID: 2120 Comm: snap-update-ns Not tainted 7.0.0-rc4+ #22 PREEMPTLAZY\nHardware name: LENOVO 83ED/LNVNB161216, BIOS NHCN60WW 09/11/2025\nCall trace:\nshow_stack (arch/arm64/kernel/stacktrace.c:501) (C)\ndump_stack_lvl (lib/dump_stack.c:122)\nprint_report (mm/kasan/report.c:379 mm/kasan/report.c:482)\nkasan_report (mm/kasan/report.c:597)\n__asan_report_load1_noabort (mm/kasan/report_generic.c:378)\naa_dfa_match (security/apparmor/match.c:535)\nmatch_mnt_path_str (security/apparmor/mount.c:244 security/apparmor/mount.c:336)\nmatch_mnt (security/apparmor/mount.c:371)\naa_bind_mount (security/apparmor/mount.c:447 (discriminator 4))\napparmor_sb_mount (security/apparmor/lsm.c:719 (discriminator 1))\nsecurity_sb_mount (security/security.c:1062 (discriminator 31))\npath_mount (fs/namespace.c:4101)\n__arm64_sys_mount (fs/namespace.c:4172 fs/namespace.c:4361 fs/namespace.c:4338 fs/namespace.c:4338)\ninvoke_syscall.constprop.0 (arch/arm64/kernel/syscall.c:35 arch/arm64/kernel/syscall.c:49)\nel0_svc_common.constprop.0 (./include/linux/thread_info.h:142 (discriminator 2) arch/arm64/kernel/syscall.c:140 (discriminator 2))\ndo_el0_svc (arch/arm64/kernel/syscall.c:152)\nel0_svc (arch/arm64/kernel/entry-common.c:80 arch/arm64/kernel/entry-common.c:725)\nel0t_64_sync_handler (arch/arm64/kernel/entry-common.c:744)\nel0t_64_sync (arch/arm64/kernel/entry.S:596)\n\nAllocated by task 2120:\nkasan_save_stack (mm/kasan/common.c:58)\nkasan_save_track (./arch/arm64/include/asm/current.h:19 mm/kasan/common.c:70 mm/kasan/common.c:79)\nkasan_save_alloc_info (mm/kasan/generic.c:571)\n__kasan_kmalloc (mm/kasan/common.c:419)\n__kmalloc_noprof (./include/linux/kasan.h:263 mm/slub.c:5260 mm/slub.c:5272)\naa_get_buffer (security/apparmor/lsm.c:2201)\naa_bind_mount (security/apparmor/mount.c:442)\napparmor_sb_mount (security/apparmor/lsm.c:719 (discriminator 1))\nsecurity_sb_mount (security/security.c:1062 (discriminator 31))\npath_mount (fs/namespace.c:4101)\n__arm64_sys_mount (fs/namespace.c:4172 fs/namespace.c:4361 fs/namespace.c:4338 fs/namespace.c:4338)\ninvoke_syscall.constprop.0 (arch/arm64/kernel/syscall.c:35 arch/arm64/kernel/syscall.c:49)\nel0_svc_common.constprop.0 (./include/linux/thread_info.h:142 (discriminator 2) arch/arm64/kernel/syscall.c:140 (discriminator 2))\ndo_el0_svc (arch/arm64/kernel/syscall.c:152)\nel0_svc (arch/arm64/kernel/entry-common.c:80 arch/arm64/kernel/entry-common.c:725)\nel0t_64_sync_handler (arch/arm64/kernel/entry-common.c:744)\nel0t_64_sync (arch/arm64/kernel/entry.S:596)\n\nThe buggy address belongs to the object at ffff0008901ca000\nwhich belongs to the cache kmalloc-rnd-06-8k of size 8192\nThe buggy address is located 0 bytes to the right of\nallocated 8192-byte region [ffff0008901ca000, ffff0008901cc000)\n\nThe buggy address belongs to the physical page:\npage: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x9101c8\nhead: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:-1 pincount:0\nflags: 0x8000000000000040(head|zone=2)\npage_type: f5(slab)\nraw: 8000000000000040 ffff000800016c40 fffffdffe2d14e10 ffff000800015c70\nraw: 0000000000000000 0000000800010001 00000000f5000000 0000000000000000\nhead: 8000000000000040 ffff000800016c40 fffffdffe2d14e10 ffff000800015c70\nhead: 0000000000000000 0000000800010001 00000000f5000000 0000000000000000\nhead: 8000000000000003 fffffdffe2407201 fffffdffffffffff 00000000ffffffff\nhead: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008\npage dumped because: kasan: bad access detected\n\nMemory state around the buggy address:\nffff0008901cbf00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\nffff0008\n---truncated---"
        }
      ],
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            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The vulnerability is reached through the local `mount(2)` syscall; there is no network-facing path to AppArmor mount mediation.\nAC:L - Every confined directory mount deterministically overwrites the terminator, and the trailing byte from a non-zeroed kmalloc buffer is reliably non-zero (and groomable), so the OOB read is reliably triggered.\nPR:L - Mount requires CAP_SYS_ADMIN, but only namespace-relative \u2014 an unprivileged user obtains it via `unshare -Urm`; confinement by a mount-mediating profile is the common Ubuntu/snap default (the actual reporter was unprivileged snap-update-ns).\nUI:N - The attacker performs the directory bind/remount themselves; no action by any other user is required.\nS:U - The out-of-bounds access stays within the kernel\u0027s own memory and does not cross into another security authority.\nC:H - Out-of-bounds read of unbounded length (DFA walks until a NUL is found), and the unterminated path is logged via `audit_mount`, leaking adjacent kernel heap contents to the user.\nI:N - The defect is purely a read overrun; the `/` and missing-terminator writes are in-bounds, so no out-of-bounds data modification occurs.\nA:H - The demonstrated behavior is a KASAN slab-out-of-bounds oops; on KASAN/hardened kernels it is a guaranteed crash and can fault when the buffer abuts an unmapped page."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:29:23.386Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/4b877ef27adc8ec187b0418629169856e7264e01"
        },
        {
          "url": "https://git.kernel.org/stable/c/828bf7929bedcb79b560b5b4e44f22abee07d31b"
        }
      ],
      "title": "apparmor: Fix string overrun due to missing termination",
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    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46055",
    "datePublished": "2026-05-27T12:57:13.671Z",
    "dateReserved": "2026-05-13T15:03:33.094Z",
    "dateUpdated": "2026-08-05T12:29:23.386Z",
    "state": "PUBLISHED"
  },
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  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-46055",
      "date": "2026-09-16",
      "epss": "0.0015",
      "percentile": "0.04536"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-46055\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-05-27T14:17:25.190\",\"lastModified\":\"2026-06-17T10:52:59.437\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\napparmor: Fix string overrun due to missing termination\\n\\nWhen booting Ubuntu 26.04 with Linux 7.0-rc4 on an ARM64 Qualcomm\\nSnapdragon X1 we see a string buffer overrun:\\n\\nBUG: KASAN: slab-out-of-bounds in aa_dfa_match (security/apparmor/match.c:535)\\nRead of size 1 at addr ffff0008901cc000 by task snap-update-ns/2120\\n\\nCPU: 5 UID: 60578 PID: 2120 Comm: snap-update-ns Not tainted 7.0.0-rc4+ #22 PREEMPTLAZY\\nHardware name: LENOVO 83ED/LNVNB161216, BIOS NHCN60WW 09/11/2025\\nCall trace:\\nshow_stack (arch/arm64/kernel/stacktrace.c:501) (C)\\ndump_stack_lvl (lib/dump_stack.c:122)\\nprint_report (mm/kasan/report.c:379 mm/kasan/report.c:482)\\nkasan_report (mm/kasan/report.c:597)\\n__asan_report_load1_noabort (mm/kasan/report_generic.c:378)\\naa_dfa_match (security/apparmor/match.c:535)\\nmatch_mnt_path_str (security/apparmor/mount.c:244 security/apparmor/mount.c:336)\\nmatch_mnt (security/apparmor/mount.c:371)\\naa_bind_mount (security/apparmor/mount.c:447 (discriminator 4))\\napparmor_sb_mount (security/apparmor/lsm.c:719 (discriminator 1))\\nsecurity_sb_mount (security/security.c:1062 (discriminator 31))\\npath_mount (fs/namespace.c:4101)\\n__arm64_sys_mount (fs/namespace.c:4172 fs/namespace.c:4361 fs/namespace.c:4338 fs/namespace.c:4338)\\ninvoke_syscall.constprop.0 (arch/arm64/kernel/syscall.c:35 arch/arm64/kernel/syscall.c:49)\\nel0_svc_common.constprop.0 (./include/linux/thread_info.h:142 (discriminator 2) arch/arm64/kernel/syscall.c:140 (discriminator 2))\\ndo_el0_svc (arch/arm64/kernel/syscall.c:152)\\nel0_svc (arch/arm64/kernel/entry-common.c:80 arch/arm64/kernel/entry-common.c:725)\\nel0t_64_sync_handler (arch/arm64/kernel/entry-common.c:744)\\nel0t_64_sync (arch/arm64/kernel/entry.S:596)\\n\\nAllocated by task 2120:\\nkasan_save_stack (mm/kasan/common.c:58)\\nkasan_save_track (./arch/arm64/include/asm/current.h:19 mm/kasan/common.c:70 mm/kasan/common.c:79)\\nkasan_save_alloc_info (mm/kasan/generic.c:571)\\n__kasan_kmalloc (mm/kasan/common.c:419)\\n__kmalloc_noprof (./include/linux/kasan.h:263 mm/slub.c:5260 mm/slub.c:5272)\\naa_get_buffer (security/apparmor/lsm.c:2201)\\naa_bind_mount (security/apparmor/mount.c:442)\\napparmor_sb_mount (security/apparmor/lsm.c:719 (discriminator 1))\\nsecurity_sb_mount (security/security.c:1062 (discriminator 31))\\npath_mount (fs/namespace.c:4101)\\n__arm64_sys_mount (fs/namespace.c:4172 fs/namespace.c:4361 fs/namespace.c:4338 fs/namespace.c:4338)\\ninvoke_syscall.constprop.0 (arch/arm64/kernel/syscall.c:35 arch/arm64/kernel/syscall.c:49)\\nel0_svc_common.constprop.0 (./include/linux/thread_info.h:142 (discriminator 2) arch/arm64/kernel/syscall.c:140 (discriminator 2))\\ndo_el0_svc (arch/arm64/kernel/syscall.c:152)\\nel0_svc (arch/arm64/kernel/entry-common.c:80 arch/arm64/kernel/entry-common.c:725)\\nel0t_64_sync_handler (arch/arm64/kernel/entry-common.c:744)\\nel0t_64_sync (arch/arm64/kernel/entry.S:596)\\n\\nThe buggy address belongs to the object at ffff0008901ca000\\nwhich belongs to the cache kmalloc-rnd-06-8k of size 8192\\nThe buggy address is located 0 bytes to the right of\\nallocated 8192-byte region [ffff0008901ca000, ffff0008901cc000)\\n\\nThe buggy address belongs to the physical page:\\npage: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x9101c8\\nhead: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:-1 pincount:0\\nflags: 0x8000000000000040(head|zone=2)\\npage_type: f5(slab)\\nraw: 8000000000000040 ffff000800016c40 fffffdffe2d14e10 ffff000800015c70\\nraw: 0000000000000000 0000000800010001 00000000f5000000 0000000000000000\\nhead: 8000000000000040 ffff000800016c40 fffffdffe2d14e10 ffff000800015c70\\nhead: 0000000000000000 0000000800010001 00000000f5000000 0000000000000000\\nhead: 8000000000000003 fffffdffe2407201 fffffdffffffffff 00000000ffffffff\\nhead: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008\\npage dumped because: kasan: bad access detected\\n\\nMemory state around the buggy address:\\nffff0008901cbf00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\\nffff0008\\n---truncated---\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"security/apparmor/path.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"93d4dbdc8da0b8a3ba86f4a08868084f8da872e1\",\"lessThan\":\"4b877ef27adc8ec187b0418629169856e7264e01\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"93d4dbdc8da0b8a3ba86f4a08868084f8da872e1\",\"lessThan\":\"828bf7929bedcb79b560b5b4e44f22abee07d31b\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"security/apparmor/path.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"7.0\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"7.0\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.0.4\",\"lessThanOrEqual\":\"7.0.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H\",\"baseScore\":7.1,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.2}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-Other\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"7.0\",\"versionEndExcluding\":\"7.0.4\",\"matchCriteriaId\":\"37C6A06A-578A-467F-8EE4-E50B9A46C871\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/4b877ef27adc8ec187b0418629169856e7264e01\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/828bf7929bedcb79b560b5b4e44f22abee07d31b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-28T11:07:25+00:00",
      "cve": "CVE-2026-46055",
      "id": "CVE-2026-46055",
      "initial_release_date": "2026-05-27T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: apparmor: Fix string overrun due to missing termination",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46055.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-27T16:56:21Z",
      "cve": "CVE-2026-46055",
      "id": "CVE-2026-46055",
      "initial_release_date": "2026-05-28T03:53:34Z",
      "product_status:known_not_affected": "299",
      "product_status:recommended": "4",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-46055",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-46055.json",
      "version": "6"
    }
  }
}



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Tags
Taxonomy of the tags.





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.