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CVE-2026-53349

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack: destroy stale expectfn expectations on unregister NAT helpers such as nf_nat_h323 store a raw pointer to module text in exp->expectfn (e.g. ip_nat_q931_expect). nf_ct_helper_expectfn_unregister() only unlinks the callback descriptor and never walks the expectation table, so an expectation pending at module removal survives with a dangling exp->expectfn into freed module text. When the expected connect
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:20cf640d7164d35856150cd4d22369fa275ed4349697179fdaa539b1c10fc67f
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":["include/net/netfilter/nf_conntrack_helper.h","net/ipv4/netfilter/nf_nat_h323.c","net/netfilter/nf_conntrack_helper.c","net/netfilter/nf_nat_core.c","net/netfilter/nf_nat_sip.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.20"},{"lessThan":"2.6.20","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.176","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaf…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:077692f2fa7e7ab19799e75146ab1de3ad63727c0f55964e91d533a4ec2c7203 · sha256:60628cd55d3080d3… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["include/net/netfilter/nf_conntrack_helper.h","net/ipv4/netfilter/nf_nat_h323.c","net/netfilter/nf_conntrack_helper.c","net/netfilter/nf_nat_core.c","net/netfilter/nf_nat_sip.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"fbfde85308b99938a6092c48753214d190ece48d","status":"affected","version":"f587de0e2feb9eb9b94f98d0a7b7437e4d6617b4","versionType":"git"},{"lessThan":"29d8cc44bbdf7b83a1929912214afe6643c1b4f1","status":"affected","version":"f587de0e2feb9eb9b94…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:077692f2fa7e7ab19799e75146ab1de3ad63727c0f55964e91d533a4ec2c7203 · sha256:60628cd55d3080d3… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["include/net/netfilter/nf_conntrack_helper.h","net/ipv4/netfilter/nf_nat_h323.c","net/netfilter/nf_conntrack_helper.c","net/netfilter/nf_nat_core.c","net/netfilter/nf_nat_sip.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.20"},{"lessThan":"2.6.20","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.176","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaf…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:077692f2fa7e7ab19799e75146ab1de3ad63727c0f55964e91d533a4ec2c7203 · sha256:60628cd55d3080d3… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["include/net/netfilter/nf_conntrack_helper.h","net/ipv4/netfilter/nf_nat_h323.c","net/netfilter/nf_conntrack_helper.c","net/netfilter/nf_nat_core.c","net/netfilter/nf_nat_sip.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"fbfde85308b99938a6092c48753214d190ece48d","status":"affected","version":"f587de0e2feb9eb9b94f98d0a7b7437e4d6617b4","versionType":"git"},{"lessThan":"29d8cc44bbdf7b83a1929912214afe6643c1b4f1","status":"affected","version":"f587de0e2feb9eb9b94…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:077692f2fa7e7ab19799e75146ab1de3ad63727c0f55964e91d533a4ec2c7203 · sha256:60628cd55d3080d3… · /containers/cna/affected/0

Source references

6 source assertions
{"url":"https://git.kernel.org/stable/c/29d8cc44bbdf7b83a1929912214afe6643c1b4f1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:077692f2fa7e7ab19799e75146ab1de3ad63727c0f55964e91d533a4ec2c7203 · sha256:60628cd55d3080d3… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/9d017671dcfcec23321fb7962dea624f9e71ddb1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:077692f2fa7e7ab19799e75146ab1de3ad63727c0f55964e91d533a4ec2c7203 · sha256:60628cd55d3080d3… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/bf8c0b5dd203be94c2ad50e264cec19267c6bd39"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:077692f2fa7e7ab19799e75146ab1de3ad63727c0f55964e91d533a4ec2c7203 · sha256:60628cd55d3080d3… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/c3009418f9fa1dcb3eb86f4d8c92583537b5faa3"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:077692f2fa7e7ab19799e75146ab1de3ad63727c0f55964e91d533a4ec2c7203 · sha256:60628cd55d3080d3… · /containers/cna/references/5
{"url":"https://git.kernel.org/stable/c/f92c90a2a3e6ff6f9f7fe88fde9004b4ca8f956d"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:077692f2fa7e7ab19799e75146ab1de3ad63727c0f55964e91d533a4ec2c7203 · sha256:60628cd55d3080d3… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/fbfde85308b99938a6092c48753214d190ece48d"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:077692f2fa7e7ab19799e75146ab1de3ad63727c0f55964e91d533a4ec2c7203 · sha256:60628cd55d3080d3… · /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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