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CVE-2026-63996

In the Linux kernel, the following vulnerability has been resolved: ethtool: cmis: require exact CDB reply length Malicious SFP module could respond with rpl_len longer than what cmis_cdb_process_reply() expected, leading to OOB writes. Malicious HW is a bit theoretical but some modules may just be buggy and/or the reads may occasionally get corrupted, so let's protect the kernel. The existing check protects from short replies. We need to protect from long ones, too. All callers that pass a n
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:3be2323aafb3d56deb7042311817597fa16ae62f16b621d64d6da51bf7f912db
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/ethtool/cmis_cdb.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"2f818cc98fd2c63a08239cb48995f6c3bfe9d9b3","status":"affected","version":"a39c84d796254e6b1662ca0c46dbc313379e9291","versionType":"git"},{"lessThan":"4d42fb88ec61f2e98c33a9e3a2de371d5edbc6b1","status":"affected","version":"a39c84d796254e6b1662ca0c46dbc313379e9291","versionType":"git"},{"lessThan":"eb5dcd740cd7fa27bc2caeff2d28ef28e93ff4d3","status":"affected","version":"a39c84d796254e6b1662ca0…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2a25de0552509fbe7f8a681e802c4cf1099af58aa72100d4b1c561f90781fea5 · sha256:a2ef8b6aacf7e57e… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["net/ethtool/cmis_cdb.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.11"},{"lessThan":"6.11","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.93","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.35","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.12","versionType":"semver"},{"lessThanO…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2a25de0552509fbe7f8a681e802c4cf1099af58aa72100d4b1c561f90781fea5 · sha256:a2ef8b6aacf7e57e… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/ethtool/cmis_cdb.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"2f818cc98fd2c63a08239cb48995f6c3bfe9d9b3","status":"affected","version":"a39c84d796254e6b1662ca0c46dbc313379e9291","versionType":"git"},{"lessThan":"4d42fb88ec61f2e98c33a9e3a2de371d5edbc6b1","status":"affected","version":"a39c84d796254e6b1662ca0c46dbc313379e9291","versionType":"git"},{"lessThan":"eb5dcd740cd7fa27bc2caeff2d28ef28e93ff4d3","status":"affected","version":"a39c84d796254e6b1662ca0…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2a25de0552509fbe7f8a681e802c4cf1099af58aa72100d4b1c561f90781fea5 · sha256:a2ef8b6aacf7e57e… · /containers/cna/affected/0
{"defaultStatus":"affected","product":"Linux","programFiles":["net/ethtool/cmis_cdb.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.11"},{"lessThan":"6.11","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.93","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.35","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.12","versionType":"semver"},{"lessThanO…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2a25de0552509fbe7f8a681e802c4cf1099af58aa72100d4b1c561f90781fea5 · sha256:a2ef8b6aacf7e57e… · /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:v2:2a25de0552509fbe7f8a681e802c4cf1099af58aa72100d4b1c561f90781fea5 · sha256:a2ef8b6aacf7e57e… · /containers/cna/metrics/0/cvssV3_1

Source references

4 source assertions
{"url":"https://git.kernel.org/stable/c/2f818cc98fd2c63a08239cb48995f6c3bfe9d9b3"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2a25de0552509fbe7f8a681e802c4cf1099af58aa72100d4b1c561f90781fea5 · sha256:a2ef8b6aacf7e57e… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/4d42fb88ec61f2e98c33a9e3a2de371d5edbc6b1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2a25de0552509fbe7f8a681e802c4cf1099af58aa72100d4b1c561f90781fea5 · sha256:a2ef8b6aacf7e57e… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/6c3f999a9d1338c6c89a9ff4549eafe72bc2e7b1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2a25de0552509fbe7f8a681e802c4cf1099af58aa72100d4b1c561f90781fea5 · sha256:a2ef8b6aacf7e57e… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/eb5dcd740cd7fa27bc2caeff2d28ef28e93ff4d3"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2a25de0552509fbe7f8a681e802c4cf1099af58aa72100d4b1c561f90781fea5 · sha256:a2ef8b6aacf7e57e… · /containers/cna/references/2

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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