CVE-2026-45893 (GCVE-0-2026-45893)
Vulnerability from cvelistv5
Published
2026-05-27 12:17
Modified
2026-05-27 12:17
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: apparmor: Fix & Optimize table creation from possibly unaligned memory Source blob may come from userspace and might be unaligned. Try to optize the copying process by avoiding unaligned memory accesses. - Added Fixes tag - Added "Fix &" to description as this doesn't just optimize but fixes a potential unaligned memory access [jj: remove duplicate word "convert" in comment trigger checkpatch warning]
References
Impacted products
Vendor Product Version
Linux Linux Version: e6e8bf418850d7958311a96ccfb594f2bcc8313e
Version: e6e8bf418850d7958311a96ccfb594f2bcc8313e
Version: e6e8bf418850d7958311a96ccfb594f2bcc8313e
Version: e6e8bf418850d7958311a96ccfb594f2bcc8313e
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "security/apparmor/include/match.h",
            "security/apparmor/match.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "47e351dfef60ab0e3285133556e1a9c7f646a969",
              "status": "affected",
              "version": "e6e8bf418850d7958311a96ccfb594f2bcc8313e",
              "versionType": "git"
            },
            {
              "lessThan": "e027999049c493fb728ead5a90db76942181a935",
              "status": "affected",
              "version": "e6e8bf418850d7958311a96ccfb594f2bcc8313e",
              "versionType": "git"
            },
            {
              "lessThan": "226c3b10aab23f73b03c47e7773107de56ba3a4e",
              "status": "affected",
              "version": "e6e8bf418850d7958311a96ccfb594f2bcc8313e",
              "versionType": "git"
            },
            {
              "lessThan": "6fc367bfd4c8886e6b1742aabbd1c0bdc310db3a",
              "status": "affected",
              "version": "e6e8bf418850d7958311a96ccfb594f2bcc8313e",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "security/apparmor/include/match.h",
            "security/apparmor/match.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.11"
            },
            {
              "lessThan": "4.11",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.75",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.14",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.75",
                  "versionStartIncluding": "4.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.14",
                  "versionStartIncluding": "4.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.4",
                  "versionStartIncluding": "4.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "4.11",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\napparmor: Fix \u0026 Optimize table creation from possibly unaligned memory\n\nSource blob may come from userspace and might be unaligned.\nTry to optize the copying process by avoiding unaligned memory accesses.\n\n- Added Fixes tag\n- Added \"Fix \u0026\" to description as this doesn\u0027t just optimize but fixes\n        a potential unaligned memory access\n[jj: remove duplicate word \"convert\" in comment trigger checkpatch warning]"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-27T12:17:04.135Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/47e351dfef60ab0e3285133556e1a9c7f646a969"
        },
        {
          "url": "https://git.kernel.org/stable/c/e027999049c493fb728ead5a90db76942181a935"
        },
        {
          "url": "https://git.kernel.org/stable/c/226c3b10aab23f73b03c47e7773107de56ba3a4e"
        },
        {
          "url": "https://git.kernel.org/stable/c/6fc367bfd4c8886e6b1742aabbd1c0bdc310db3a"
        }
      ],
      "title": "apparmor: Fix \u0026 Optimize table creation from possibly unaligned memory",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-45893",
    "datePublished": "2026-05-27T12:17:04.135Z",
    "dateReserved": "2026-05-13T15:03:33.083Z",
    "dateUpdated": "2026-05-27T12:17:04.135Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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