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CVE-2026-43254

In the Linux kernel, the following vulnerability has been resolved: ovpn: tcp - fix packet extraction from stream When processing TCP stream data in ovpn_tcp_recv, we receive large cloned skbs from __strp_rcv that may contain multiple coalesced packets. The current implementation has two bugs: 1. Header offset overflow: Using pskb_pull with large offsets on coalesced skbs causes skb->data - skb->head to exceed the u16 storage of skb->network_header. This causes skb_reset_network_header
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:8cd29978584254418a5b2388427d71276ef04f8d095d12c4145194b8f98f7876
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":["drivers/net/ovpn/tcp.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"0315bec883c67fa1413c61e504a28dc5bd02eb37","status":"affected","version":"11851cbd60ea1e5abbd97619d69845ead99303d6","versionType":"git"},{"lessThan":"7dba6cd7fb168d7615194a631c9c100c1c224131","status":"affected","version":"11851cbd60ea1e5abbd97619d69845ead99303d6","versionType":"git"},{"lessThan":"d4f687fbbce45b5e88438e89b5e26c0c15847992","status":"affected","version":"11851cbd60ea1e5abbd9761…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5e5eb49ec7fecd56dd746c2c7b735f5daa5f0a403f22ec8a17f0b27174c24723 · sha256:6ede9463bbc479f6… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/ovpn/tcp.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.16"},{"lessThan":"6.16","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.16","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5e5eb49ec7fecd56dd746c2c7b735f5daa5f0a403f22ec8a17f0b27174c24723 · sha256:6ede9463bbc479f6… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/ovpn/tcp.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"0315bec883c67fa1413c61e504a28dc5bd02eb37","status":"affected","version":"11851cbd60ea1e5abbd97619d69845ead99303d6","versionType":"git"},{"lessThan":"7dba6cd7fb168d7615194a631c9c100c1c224131","status":"affected","version":"11851cbd60ea1e5abbd97619d69845ead99303d6","versionType":"git"},{"lessThan":"d4f687fbbce45b5e88438e89b5e26c0c15847992","status":"affected","version":"11851cbd60ea1e5abbd9761…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5e5eb49ec7fecd56dd746c2c7b735f5daa5f0a403f22ec8a17f0b27174c24723 · sha256:6ede9463bbc479f6… · /containers/cna/affected/0
{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/ovpn/tcp.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.16"},{"lessThan":"6.16","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.16","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5e5eb49ec7fecd56dd746c2c7b735f5daa5f0a403f22ec8a17f0b27174c24723 · sha256:6ede9463bbc479f6… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":7.5,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:5e5eb49ec7fecd56dd746c2c7b735f5daa5f0a403f22ec8a17f0b27174c24723 · sha256:6ede9463bbc479f6… · /containers/cna/metrics/0/cvssV3_1

Source references

3 source assertions
{"url":"https://git.kernel.org/stable/c/0315bec883c67fa1413c61e504a28dc5bd02eb37"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5e5eb49ec7fecd56dd746c2c7b735f5daa5f0a403f22ec8a17f0b27174c24723 · sha256:6ede9463bbc479f6… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/7dba6cd7fb168d7615194a631c9c100c1c224131"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5e5eb49ec7fecd56dd746c2c7b735f5daa5f0a403f22ec8a17f0b27174c24723 · sha256:6ede9463bbc479f6… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/d4f687fbbce45b5e88438e89b5e26c0c15847992"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5e5eb49ec7fecd56dd746c2c7b735f5daa5f0a403f22ec8a17f0b27174c24723 · sha256:6ede9463bbc479f6… · /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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