Baitaphish
Security intelligence
SearchLatest briefing
CVE Explorer

CVE-2026-31684

In the Linux kernel, the following vulnerability has been resolved: net: sched: act_csum: validate nested VLAN headers tcf_csum_act() walks nested VLAN headers directly from skb->data when an skb still carries in-payload VLAN tags. The current code reads vlan->h_vlan_encapsulated_proto and then pulls VLAN_HLEN bytes without first ensuring that the full VLAN header is present in the linear area. If only part of an inner VLAN header is linearized, accessing h_vlan_encapsulated_proto reads past
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:aaeabbacc8d49c7bcf1056f34c3722a0afb17fc21f674899cce1c635af67911e
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/sched/act_csum.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"0410c619e86551677fb79887a38eccad3f5a0725","status":"affected","version":"2ecba2d1e45b24620a7c3df9531895cf68d5dec6","versionType":"git"},{"lessThan":"886469b6455611a511aa6013e957e15e50577513","status":"affected","version":"2ecba2d1e45b24620a7c3df9531895cf68d5dec6","versionType":"git"},{"lessThan":"46c07ad50fa2f4ba7663ee1b72b75ad7ad45cf09","status":"affected","version":"2ecba2d1e45b24620a7c3df95…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:238c7f7a220bc663ef7fbab4923870b43fd6c32dd9f4e4c432e2d540a86fb9df · sha256:b1f2d28170632e5f… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["net/sched/act_csum.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.1"},{"lessThan":"5.1","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.258","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.209","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.175","versionType":"semver"},{"lessThanOr…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:238c7f7a220bc663ef7fbab4923870b43fd6c32dd9f4e4c432e2d540a86fb9df · sha256:b1f2d28170632e5f… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/sched/act_csum.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"0410c619e86551677fb79887a38eccad3f5a0725","status":"affected","version":"2ecba2d1e45b24620a7c3df9531895cf68d5dec6","versionType":"git"},{"lessThan":"886469b6455611a511aa6013e957e15e50577513","status":"affected","version":"2ecba2d1e45b24620a7c3df9531895cf68d5dec6","versionType":"git"},{"lessThan":"46c07ad50fa2f4ba7663ee1b72b75ad7ad45cf09","status":"affected","version":"2ecba2d1e45b24620a7c3df95…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:238c7f7a220bc663ef7fbab4923870b43fd6c32dd9f4e4c432e2d540a86fb9df · sha256:b1f2d28170632e5f… · /containers/cna/affected/0
{"defaultStatus":"affected","product":"Linux","programFiles":["net/sched/act_csum.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.1"},{"lessThan":"5.1","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.258","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.209","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.175","versionType":"semver"},{"lessThanOr…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:238c7f7a220bc663ef7fbab4923870b43fd6c32dd9f4e4c432e2d540a86fb9df · sha256:b1f2d28170632e5f… · /containers/cna/affected/1

Source references

8 source assertions
{"url":"https://git.kernel.org/stable/c/0410c619e86551677fb79887a38eccad3f5a0725"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:238c7f7a220bc663ef7fbab4923870b43fd6c32dd9f4e4c432e2d540a86fb9df · sha256:b1f2d28170632e5f… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/3d165d975305cf76ff0b10a3c798fb31e5f5f9a5"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:238c7f7a220bc663ef7fbab4923870b43fd6c32dd9f4e4c432e2d540a86fb9df · sha256:b1f2d28170632e5f… · /containers/cna/references/6
{"url":"https://git.kernel.org/stable/c/46c07ad50fa2f4ba7663ee1b72b75ad7ad45cf09"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:238c7f7a220bc663ef7fbab4923870b43fd6c32dd9f4e4c432e2d540a86fb9df · sha256:b1f2d28170632e5f… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/886469b6455611a511aa6013e957e15e50577513"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:238c7f7a220bc663ef7fbab4923870b43fd6c32dd9f4e4c432e2d540a86fb9df · sha256:b1f2d28170632e5f… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/a69738efea0996d05a3c7d2178551b891744df1b"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:238c7f7a220bc663ef7fbab4923870b43fd6c32dd9f4e4c432e2d540a86fb9df · sha256:b1f2d28170632e5f… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/c842743d073bdd683606cb414eb0ca84465dd834"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:238c7f7a220bc663ef7fbab4923870b43fd6c32dd9f4e4c432e2d540a86fb9df · sha256:b1f2d28170632e5f… · /containers/cna/references/7
{"url":"https://git.kernel.org/stable/c/eb3765b90eb8f2a3d6310a80c14a9e57ec4267a2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:238c7f7a220bc663ef7fbab4923870b43fd6c32dd9f4e4c432e2d540a86fb9df · sha256:b1f2d28170632e5f… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/ec4930979b3f7bbeb7af5744599fc6603a4dba62"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:238c7f7a220bc663ef7fbab4923870b43fd6c32dd9f4e4c432e2d540a86fb9df · sha256:b1f2d28170632e5f… · /containers/cna/references/5

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.

← Back to CVE Explorer