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CVE-2026-64007

In the Linux kernel, the following vulnerability has been resolved: netfilter: synproxy: refresh tcphdr after skb_ensure_writable synproxy_tstamp_adjust() rewrites the TCP timestamp option in place and then patches the TCP checksum via inet_proto_csum_replace4() on the caller-supplied tcphdr pointer. Both ipv4_synproxy_hook() and ipv6_synproxy_hook() obtain that pointer with skb_header_pointer() before calling in, so it may either alias skb->head directly or point at the caller's on-stack _tc
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:af711a71a4626d5a42026c509287fe751ec403438afbaa3f14038939543f9aa3
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/netfilter/nf_synproxy_core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.12"},{"lessThan":"3.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.259","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.210","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.176","versionType":"semver"…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:98964de0eb4256267fbee4a3584992da7539d5cf070778d230ee6bc588a8463b · sha256:ca5b4c7a7a9c81fe… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/netfilter/nf_synproxy_core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"9902a1058992de5d95656b64a3bd95c077f7ba2c","status":"affected","version":"48b1de4c110a7afa4b85862f6c75af817db26fad","versionType":"git"},{"lessThan":"d3019c61799adc21811af4b521f11f3dc77f8e04","status":"affected","version":"48b1de4c110a7afa4b85862f6c75af817db26fad","versionType":"git"},{"lessThan":"dd206819f210522579010d889d45a9530bb494bc","status":"affected","version":"48b1de4c110a7…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:98964de0eb4256267fbee4a3584992da7539d5cf070778d230ee6bc588a8463b · sha256:ca5b4c7a7a9c81fe… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["net/netfilter/nf_synproxy_core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.12"},{"lessThan":"3.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.259","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.210","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.176","versionType":"semver"…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:98964de0eb4256267fbee4a3584992da7539d5cf070778d230ee6bc588a8463b · sha256:ca5b4c7a7a9c81fe… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/netfilter/nf_synproxy_core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"9902a1058992de5d95656b64a3bd95c077f7ba2c","status":"affected","version":"48b1de4c110a7afa4b85862f6c75af817db26fad","versionType":"git"},{"lessThan":"d3019c61799adc21811af4b521f11f3dc77f8e04","status":"affected","version":"48b1de4c110a7afa4b85862f6c75af817db26fad","versionType":"git"},{"lessThan":"dd206819f210522579010d889d45a9530bb494bc","status":"affected","version":"48b1de4c110a7…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:98964de0eb4256267fbee4a3584992da7539d5cf070778d230ee6bc588a8463b · sha256:ca5b4c7a7a9c81fe… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":9.8,"baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/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:v2:98964de0eb4256267fbee4a3584992da7539d5cf070778d230ee6bc588a8463b · sha256:ca5b4c7a7a9c81fe… · /containers/cna/metrics/0/cvssV3_1

Source references

8 source assertions
{"url":"https://git.kernel.org/stable/c/92170e6afe927ab2792a3f71902845789c8e31b1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:98964de0eb4256267fbee4a3584992da7539d5cf070778d230ee6bc588a8463b · sha256:ca5b4c7a7a9c81fe… · /containers/cna/references/7
{"url":"https://git.kernel.org/stable/c/9902a1058992de5d95656b64a3bd95c077f7ba2c"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:98964de0eb4256267fbee4a3584992da7539d5cf070778d230ee6bc588a8463b · sha256:ca5b4c7a7a9c81fe… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/a91887a5b6ee4b98dfbf1db657ed2b879430149e"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:98964de0eb4256267fbee4a3584992da7539d5cf070778d230ee6bc588a8463b · sha256:ca5b4c7a7a9c81fe… · /containers/cna/references/6
{"url":"https://git.kernel.org/stable/c/af2c22ccb1f621aff487ff47a040e38e058541e7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:98964de0eb4256267fbee4a3584992da7539d5cf070778d230ee6bc588a8463b · sha256:ca5b4c7a7a9c81fe… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/c7f945f7da097245a2f8ed7775ce48421047ee96"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:98964de0eb4256267fbee4a3584992da7539d5cf070778d230ee6bc588a8463b · sha256:ca5b4c7a7a9c81fe… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/d3019c61799adc21811af4b521f11f3dc77f8e04"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:98964de0eb4256267fbee4a3584992da7539d5cf070778d230ee6bc588a8463b · sha256:ca5b4c7a7a9c81fe… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/dd206819f210522579010d889d45a9530bb494bc"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:98964de0eb4256267fbee4a3584992da7539d5cf070778d230ee6bc588a8463b · sha256:ca5b4c7a7a9c81fe… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/f0fea2b6d5453a11ad11713bbf37561b9b3a7edf"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:98964de0eb4256267fbee4a3584992da7539d5cf070778d230ee6bc588a8463b · sha256:ca5b4c7a7a9c81fe… · /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.

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