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CVE-2026-52906

In the Linux kernel, the following vulnerability has been resolved: 9p: fix access mode flags being ORed instead of replaced Since commit 1f3e4142c0eb ("9p: convert to the new mount API"), v9fs_apply_options() applies parsed mount flags with |= onto flags already set by v9fs_session_init(). For 9P2000.L, session_init sets V9FS_ACCESS_CLIENT as the default, so when the user mounts with "access=user", both bits end up set. Access mode checks compare against exact values, so having both bits set
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:957b9000d174fe7b80122ca3315b8e4ea20bcfceb5221f4b835c0a44ce1d01a8
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"affected","product":"Linux","programFiles":["fs/9p/v9fs.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.19"},{"lessThan":"6.19","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:241c675b5fd5d43cb17da1e9b3803597bf16b8b4edbb64f1b01c17e85495c163 · sha256:f1c9fca481911518… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/9p/v9fs.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"b8f037e87a083291190204b959cda417aaf01058","status":"affected","version":"1f3e4142c0eb178089ea0cbc97506a061470ad27","versionType":"git"},{"lessThan":"da2346a48a5a1fed86c3fe3d73c0b60e7b3027c9","status":"affected","version":"1f3e4142c0eb178089ea0cbc97506a061470ad27","versionType":"git"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:241c675b5fd5d43cb17da1e9b3803597bf16b8b4edbb64f1b01c17e85495c163 · sha256:f1c9fca481911518… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["fs/9p/v9fs.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.19"},{"lessThan":"6.19","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:241c675b5fd5d43cb17da1e9b3803597bf16b8b4edbb64f1b01c17e85495c163 · sha256:f1c9fca481911518… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/9p/v9fs.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"b8f037e87a083291190204b959cda417aaf01058","status":"affected","version":"1f3e4142c0eb178089ea0cbc97506a061470ad27","versionType":"git"},{"lessThan":"da2346a48a5a1fed86c3fe3d73c0b60e7b3027c9","status":"affected","version":"1f3e4142c0eb178089ea0cbc97506a061470ad27","versionType":"git"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:241c675b5fd5d43cb17da1e9b3803597bf16b8b4edbb64f1b01c17e85495c163 · sha256:f1c9fca481911518… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":7.7,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:241c675b5fd5d43cb17da1e9b3803597bf16b8b4edbb64f1b01c17e85495c163 · sha256:f1c9fca481911518… · /containers/cna/metrics/0/cvssV3_1

Source references

2 source assertions
{"url":"https://git.kernel.org/stable/c/b8f037e87a083291190204b959cda417aaf01058"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:241c675b5fd5d43cb17da1e9b3803597bf16b8b4edbb64f1b01c17e85495c163 · sha256:f1c9fca481911518… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/da2346a48a5a1fed86c3fe3d73c0b60e7b3027c9"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:241c675b5fd5d43cb17da1e9b3803597bf16b8b4edbb64f1b01c17e85495c163 · sha256:f1c9fca481911518… · /containers/cna/references/1

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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