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CVE-2026-43036

In the Linux kernel, the following vulnerability has been resolved: net: use skb_header_pointer() for TCPv4 GSO frag_off check Syzbot reported a KMSAN uninit-value warning in gso_features_check() called from netif_skb_features() [1]. gso_features_check() reads iph->frag_off to decide whether to clear mangleid_features. Accessing the IPv4 header via ip_hdr()/inner_ip_hdr() can rely on skb header offsets that are not always safe for direct dereference on packets injected from PF_PACKET paths.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:003634f68fba2d79d669f52b4021aa5bede333c92aac66cd6e2a4efbc2044085
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/core/dev.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"f7a6cd508e9e825a2c69fa9e13d41ee156852f25","status":"affected","version":"cbc53e08a793b073e79f42ca33f1f3568703540d","versionType":"git"},{"lessThan":"cc91202fc20a44aab4c206f12a2bfe05da936051","status":"affected","version":"cbc53e08a793b073e79f42ca33f1f3568703540d","versionType":"git"},{"lessThan":"d970341cfa5594614c7a6634886c7688b4f5cafd","status":"affected","version":"cbc53e08a793b073e79f42ca33f1f35…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:10fff3300566948affe9c67b76e8c78c861ed93f6c53006322e95552d93c5f2c · sha256:e2461ca5423a5051… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["net/core/dev.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.7"},{"lessThan":"4.7","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.81","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.22","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.12","versionType":"semver"},{"lessThanOrEqual":…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:10fff3300566948affe9c67b76e8c78c861ed93f6c53006322e95552d93c5f2c · sha256:e2461ca5423a5051… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/core/dev.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"f7a6cd508e9e825a2c69fa9e13d41ee156852f25","status":"affected","version":"cbc53e08a793b073e79f42ca33f1f3568703540d","versionType":"git"},{"lessThan":"cc91202fc20a44aab4c206f12a2bfe05da936051","status":"affected","version":"cbc53e08a793b073e79f42ca33f1f3568703540d","versionType":"git"},{"lessThan":"d970341cfa5594614c7a6634886c7688b4f5cafd","status":"affected","version":"cbc53e08a793b073e79f42ca33f1f35…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:10fff3300566948affe9c67b76e8c78c861ed93f6c53006322e95552d93c5f2c · sha256:e2461ca5423a5051… · /containers/cna/affected/0
{"defaultStatus":"affected","product":"Linux","programFiles":["net/core/dev.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.7"},{"lessThan":"4.7","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.81","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.22","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.12","versionType":"semver"},{"lessThanOrEqual":…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:10fff3300566948affe9c67b76e8c78c861ed93f6c53006322e95552d93c5f2c · sha256:e2461ca5423a5051… · /containers/cna/affected/1

Source references

4 source assertions
{"url":"https://git.kernel.org/stable/c/cc91202fc20a44aab4c206f12a2bfe05da936051"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:10fff3300566948affe9c67b76e8c78c861ed93f6c53006322e95552d93c5f2c · sha256:e2461ca5423a5051… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/d970341cfa5594614c7a6634886c7688b4f5cafd"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:10fff3300566948affe9c67b76e8c78c861ed93f6c53006322e95552d93c5f2c · sha256:e2461ca5423a5051… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/ddc748a391dd8642ba6b2e4fe22e7f2ddf84b7f0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:10fff3300566948affe9c67b76e8c78c861ed93f6c53006322e95552d93c5f2c · sha256:e2461ca5423a5051… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/f7a6cd508e9e825a2c69fa9e13d41ee156852f25"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:10fff3300566948affe9c67b76e8c78c861ed93f6c53006322e95552d93c5f2c · sha256:e2461ca5423a5051… · /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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