Skip to content
Heist/ feed
High

fuse: re-lock request before returning from fuse_ref_folio()

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: fuse: re-lock request before returning from fuse_ref_folio() fuse_ref_folio() unlocks the request but does not re-lock it before returning. fuse_chan_abort() can end the request and the async end callback (eg fuse_writepage_free()) can free the args while the subsequent copy chain logic after fuse_ref_folio() accesses them, leading to use-after-free issues. Fix this by locking the request in fuse_ref_folio() before returning.

Announced Source revision 1
Original source ↗

CVE-2026-64266

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-64266

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "c3021629a0d820247ee12b6c5192a1d5380e21c6",
        "lessThan": "1f9156714592356b4fda57beac7eab9c2a462dd3",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c3021629a0d820247ee12b6c5192a1d5380e21c6",
        "lessThan": "5630da218a45ba80f0aba0846cbe8aa655da122b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c3021629a0d820247ee12b6c5192a1d5380e21c6",
        "lessThan": "1ca605cfa59377f0143fb35b5b01360f37d1b7c4",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c3021629a0d820247ee12b6c5192a1d5380e21c6",
        "lessThan": "0e4a5a000123d81234e27a2f8187688cf608f755",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c3021629a0d820247ee12b6c5192a1d5380e21c6",
        "lessThan": "e6aa539720c3d8def69683ed0c07cf9faea4e8be",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c3021629a0d820247ee12b6c5192a1d5380e21c6",
        "lessThan": "be353caffa8640f5e25fb3714ce8b0cef5e410e5",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c3021629a0d820247ee12b6c5192a1d5380e21c6",
        "lessThan": "65a1c2551f7e16085acbb54aedde1feaa559ba7a",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c3021629a0d820247ee12b6c5192a1d5380e21c6",
        "lessThan": "b5befa80fdbe287a98480effed9564712924add5",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "fs/fuse/dev.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "2.6.35"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "2.6.35",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.261",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.212",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.178",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.145",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.96",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.39",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.1.4",
        "versionType": "semver",
        "lessThanOrEqual": "7.1.*"
      },
      {
        "status": "unaffected",
        "version": "7.2",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "fs/fuse/dev.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-64266

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#40981 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement