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CVE-2026-64537

In the Linux kernel, the following vulnerability has been resolved: bridge: cfm: reject invalid CCM interval at configuration time ccm_tx_work_expired() re-arms itself via queue_delayed_work() using the configured exp_interval converted by interval_to_us(). When exp_interval is BR_CFM_CCM_INTERVAL_NONE or out of range, interval_to_us() returns 0, causing the worker to fire immediately in a tight loop that allocates skbs until OOM. Fix this by validating exp_interval at configuration time: -
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:1979c9798f11fa3f1bc803df1797f27b3b2e3292930e15cdfde16a0137805ab5
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":["net/bridge/br_cfm.c","net/bridge/br_cfm_netlink.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":"5.15.*","status":"unaffected","version":"5.15.212","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.178","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.145","versio…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:6886e5789969464aaa831b0d2facffb1b11ce8b35afd2ee3c1e7b4f4ac230865 · sha256:a1720b43309381cc… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/bridge/br_cfm.c","net/bridge/br_cfm_netlink.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"2870056a78961e0fecd652362ee9d3fcfd24a8a6","status":"affected","version":"2be665c3940d367e0a2a8128eb4985ce323f99a3","versionType":"git"},{"lessThan":"f0f5eb59a97ece0d85de8cfa95dc18c609302a8b","status":"affected","version":"2be665c3940d367e0a2a8128eb4985ce323f99a3","versionType":"git"},{"lessThan":"53788b134519e995699ea3721969c96a08d64575","status":"affected","versio…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:6886e5789969464aaa831b0d2facffb1b11ce8b35afd2ee3c1e7b4f4ac230865 · sha256:a1720b43309381cc… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["net/bridge/br_cfm.c","net/bridge/br_cfm_netlink.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":"5.15.*","status":"unaffected","version":"5.15.212","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.178","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.145","versio…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:6886e5789969464aaa831b0d2facffb1b11ce8b35afd2ee3c1e7b4f4ac230865 · sha256:a1720b43309381cc… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/bridge/br_cfm.c","net/bridge/br_cfm_netlink.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"2870056a78961e0fecd652362ee9d3fcfd24a8a6","status":"affected","version":"2be665c3940d367e0a2a8128eb4985ce323f99a3","versionType":"git"},{"lessThan":"f0f5eb59a97ece0d85de8cfa95dc18c609302a8b","status":"affected","version":"2be665c3940d367e0a2a8128eb4985ce323f99a3","versionType":"git"},{"lessThan":"53788b134519e995699ea3721969c96a08d64575","status":"affected","versio…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:6886e5789969464aaa831b0d2facffb1b11ce8b35afd2ee3c1e7b4f4ac230865 · sha256:a1720b43309381cc… · /containers/cna/affected/0

Source references

7 source assertions
{"url":"https://git.kernel.org/stable/c/2870056a78961e0fecd652362ee9d3fcfd24a8a6"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6886e5789969464aaa831b0d2facffb1b11ce8b35afd2ee3c1e7b4f4ac230865 · sha256:a1720b43309381cc… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/53788b134519e995699ea3721969c96a08d64575"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6886e5789969464aaa831b0d2facffb1b11ce8b35afd2ee3c1e7b4f4ac230865 · sha256:a1720b43309381cc… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/865643640b5b5c4579b32d7a55ac9ad648362eaa"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6886e5789969464aaa831b0d2facffb1b11ce8b35afd2ee3c1e7b4f4ac230865 · sha256:a1720b43309381cc… · /containers/cna/references/5
{"url":"https://git.kernel.org/stable/c/a090880c1f544589427e5b7050c40fb211ccecb4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6886e5789969464aaa831b0d2facffb1b11ce8b35afd2ee3c1e7b4f4ac230865 · sha256:a1720b43309381cc… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/b42aeb58317f12024734759ff745856b53948873"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6886e5789969464aaa831b0d2facffb1b11ce8b35afd2ee3c1e7b4f4ac230865 · sha256:a1720b43309381cc… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/f0f5eb59a97ece0d85de8cfa95dc18c609302a8b"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6886e5789969464aaa831b0d2facffb1b11ce8b35afd2ee3c1e7b4f4ac230865 · sha256:a1720b43309381cc… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/f3e02edd8322b31b8e6517faa6ba053bf29d1e26"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6886e5789969464aaa831b0d2facffb1b11ce8b35afd2ee3c1e7b4f4ac230865 · sha256:a1720b43309381cc… · /containers/cna/references/6

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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