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CVE-2026-23393

In the Linux kernel, the following vulnerability has been resolved: bridge: cfm: Fix race condition in peer_mep deletion When a peer MEP is being deleted, cancel_delayed_work_sync() is called on ccm_rx_dwork before freeing. However, br_cfm_frame_rx() runs in softirq context under rcu_read_lock (without RTNL) and can re-schedule ccm_rx_dwork via ccm_rx_timer_start() between cancel_delayed_work_sync() returning and kfree_rcu() being called. The following is a simple race scenario: c
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:0626c435122f65801c17745df1c8826273711526878604bde7695c979da6a476
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":"unaffected","product":"Linux","programFiles":["net/bridge/br_cfm.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"e89dbd2736a45f0507949af4748cbbf3ff793146","status":"affected","version":"dc32cbb3dbd7da38c700d6e0fc6354df24920525","versionType":"git"},{"lessThan":"d8f35767bacb3c7769d470a41cf161e3f3c07e70","status":"affected","version":"dc32cbb3dbd7da38c700d6e0fc6354df24920525","versionType":"git"},{"lessThan":"1fd81151f65927fd9edb8ecd12ad45527dbbe5ab","status":"affected","version":"dc32cbb3dbd7da38c700d6e0fc…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:6dc1c3f406a216af14047007517d7dfeac540934b6b39d6bdec7ab6c752f1cda · sha256:c166adab75690b08… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["net/bridge/br_cfm.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.11"},{"lessThan":"5.11","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.78","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.20","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.10","versionType":"semver"},{"lessThanOr…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:6dc1c3f406a216af14047007517d7dfeac540934b6b39d6bdec7ab6c752f1cda · sha256:c166adab75690b08… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/bridge/br_cfm.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"e89dbd2736a45f0507949af4748cbbf3ff793146","status":"affected","version":"dc32cbb3dbd7da38c700d6e0fc6354df24920525","versionType":"git"},{"lessThan":"d8f35767bacb3c7769d470a41cf161e3f3c07e70","status":"affected","version":"dc32cbb3dbd7da38c700d6e0fc6354df24920525","versionType":"git"},{"lessThan":"1fd81151f65927fd9edb8ecd12ad45527dbbe5ab","status":"affected","version":"dc32cbb3dbd7da38c700d6e0fc…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:6dc1c3f406a216af14047007517d7dfeac540934b6b39d6bdec7ab6c752f1cda · sha256:c166adab75690b08… · /containers/cna/affected/0
{"defaultStatus":"affected","product":"Linux","programFiles":["net/bridge/br_cfm.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.11"},{"lessThan":"5.11","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.78","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.20","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.10","versionType":"semver"},{"lessThanOr…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:6dc1c3f406a216af14047007517d7dfeac540934b6b39d6bdec7ab6c752f1cda · sha256:c166adab75690b08… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:6dc1c3f406a216af14047007517d7dfeac540934b6b39d6bdec7ab6c752f1cda · sha256:c166adab75690b08… · /containers/cna/metrics/0/cvssV3_1

Source references

4 source assertions
{"url":"https://git.kernel.org/stable/c/1fd81151f65927fd9edb8ecd12ad45527dbbe5ab"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6dc1c3f406a216af14047007517d7dfeac540934b6b39d6bdec7ab6c752f1cda · sha256:c166adab75690b08… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/3715a00855316066cdda69d43648336367422127"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6dc1c3f406a216af14047007517d7dfeac540934b6b39d6bdec7ab6c752f1cda · sha256:c166adab75690b08… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/d8f35767bacb3c7769d470a41cf161e3f3c07e70"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6dc1c3f406a216af14047007517d7dfeac540934b6b39d6bdec7ab6c752f1cda · sha256:c166adab75690b08… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/e89dbd2736a45f0507949af4748cbbf3ff793146"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6dc1c3f406a216af14047007517d7dfeac540934b6b39d6bdec7ab6c752f1cda · sha256:c166adab75690b08… · /containers/cna/references/0

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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