Vulnerability-Lookup

GHSA-5H27-3WGQ-G9CF

Vulnerability from github – Published: 2026-05-08 15:31 – Updated: 2026-05-08 15:31

Details

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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-43474"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-08T15:17:00Z",
    "severity": null
  },
  "details": "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",
  "id": "GHSA-5h27-3wgq-g9cf",
  "modified": "2026-05-08T15:31:30Z",
  "published": "2026-05-08T15:31:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43474"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/379e19e820dd1c6145426b97467728b3b89c0b42"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b8c182b2c8c44c6016b11d8af61715ad7ef958a1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cb184dd19154fc486fa3d9e02afe70a97e54e055"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-43474 (GCVE-0-2026-43474)

Vulnerability from cvelistv5 – Published: 2026-05-08 14:22 – Updated: 2026-05-11 22:25

Title

fs: init flags_valid before calling vfs_fileattr_get

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

Severity ?

No CVSS data available.

Assigner

Linux

References

3 references

URL	Tags
https://git.kernel.org/stable/c/379e19e820dd1c614…
https://git.kernel.org/stable/c/b8c182b2c8c44c601…
https://git.kernel.org/stable/c/cb184dd19154fc486…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: be7efb2d20d67f334a7de2aef77ae6c69367e646 , < 379e19e820dd1c6145426b97467728b3b89c0b42 (git) Affected: be7efb2d20d67f334a7de2aef77ae6c69367e646 , < b8c182b2c8c44c6016b11d8af61715ad7ef958a1 (git) Affected: be7efb2d20d67f334a7de2aef77ae6c69367e646 , < cb184dd19154fc486fa3d9e02afe70a97e54e055 (git)
Linux	Linux	Affected: 6.17 Unaffected: 0 , < 6.17 (semver) Unaffected: 6.18.19 , ≤ 6.18.* (semver) Unaffected: 6.19.9 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

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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"
            },
            {
              "lessThan": "cb184dd19154fc486fa3d9e02afe70a97e54e055",
              "status": "affected",
              "version": "be7efb2d20d67f334a7de2aef77ae6c69367e646",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/file_attr.c"
          ],
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          "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:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "6.17",
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                },
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                },
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                }
              ],
              "negate": false,
              "operator": "OR"
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          ]
        }
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      "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"
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      "providerMetadata": {
        "dateUpdated": "2026-05-11T22:25:18.616Z",
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        },
        {
          "url": "https://git.kernel.org/stable/c/cb184dd19154fc486fa3d9e02afe70a97e54e055"
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      ],
      "title": "fs: init flags_valid before calling vfs_fileattr_get",
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  "cveMetadata": {
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    "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",
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}

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.

Action not permitted

GHSA-5H27-3WGQ-G9CF

CVE-2026-43474 (GCVE-0-2026-43474)

Tags

Sightings

Nomenclature