CVE-2026-43474 (GCVE-0-2026-43474)
Vulnerability from cvelistv5
Published
2026-05-08 14:22
Modified
2026-05-11 22:25
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: fs: init flags_valid before calling vfs_fileattr_get syzbot reported a uninit-value bug in [1]. Similar to the "*get" context where the kernel's internal file_kattr structure is initialized before calling vfs_fileattr_get(), we should use the same mechanism when using fa. [1] BUG: KMSAN: uninit-value in fuse_fileattr_get+0xeb4/0x1450 fs/fuse/ioctl.c:517 fuse_fileattr_get+0xeb4/0x1450 fs/fuse/ioctl.c:517 vfs_fileattr_get fs/file_attr.c:94 [inline] __do_sys_file_getattr fs/file_attr.c:416 [inline] Local variable fa.i created at: __do_sys_file_getattr fs/file_attr.c:380 [inline] __se_sys_file_getattr+0x8c/0xbd0 fs/file_attr.c:372
References
Impacted products
Vendor Product Version
Linux Linux Version: be7efb2d20d67f334a7de2aef77ae6c69367e646
Version: be7efb2d20d67f334a7de2aef77ae6c69367e646
Version: be7efb2d20d67f334a7de2aef77ae6c69367e646
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/file_attr.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "379e19e820dd1c6145426b97467728b3b89c0b42",
              "status": "affected",
              "version": "be7efb2d20d67f334a7de2aef77ae6c69367e646",
              "versionType": "git"
            },
            {
              "lessThan": "b8c182b2c8c44c6016b11d8af61715ad7ef958a1",
              "status": "affected",
              "version": "be7efb2d20d67f334a7de2aef77ae6c69367e646",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "be7efb2d20d67f334a7de2aef77ae6c69367e646",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/file_attr.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.17"
            },
            {
              "lessThan": "6.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.19",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.9",
              "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": "6.18.19",
                  "versionStartIncluding": "6.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.9",
                  "versionStartIncluding": "6.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "6.17",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs: init flags_valid before calling vfs_fileattr_get\n\nsyzbot reported a uninit-value bug in [1].\n\nSimilar to the \"*get\" context where the kernel\u0027s internal file_kattr\nstructure is initialized before calling vfs_fileattr_get(), we should\nuse the same mechanism when using fa.\n\n[1]\nBUG: KMSAN: uninit-value in fuse_fileattr_get+0xeb4/0x1450 fs/fuse/ioctl.c:517\n fuse_fileattr_get+0xeb4/0x1450 fs/fuse/ioctl.c:517\n vfs_fileattr_get fs/file_attr.c:94 [inline]\n __do_sys_file_getattr fs/file_attr.c:416 [inline]\n\nLocal variable fa.i created at:\n __do_sys_file_getattr fs/file_attr.c:380 [inline]\n __se_sys_file_getattr+0x8c/0xbd0 fs/file_attr.c:372"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T22:25:18.616Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/379e19e820dd1c6145426b97467728b3b89c0b42"
        },
        {
          "url": "https://git.kernel.org/stable/c/b8c182b2c8c44c6016b11d8af61715ad7ef958a1"
        },
        {
          "url": "https://git.kernel.org/stable/c/cb184dd19154fc486fa3d9e02afe70a97e54e055"
        }
      ],
      "title": "fs: init flags_valid before calling vfs_fileattr_get",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-43474",
    "datePublished": "2026-05-08T14:22:32.871Z",
    "dateReserved": "2026-05-01T14:12:56.011Z",
    "dateUpdated": "2026-05-11T22:25:18.616Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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