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CVE-2026-52986

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack_sip: don't use simple_strtoul Replace unsafe port parsing in epaddr_len(), ct_sip_parse_header_uri(), and ct_sip_parse_request() with a new sip_parse_port() helper that validates each digit against the buffer limit, eliminating the use of simple_strtoul() which assumes NUL-terminated strings. The previous code dereferenced pointers without bounds checks after sip_parse_addr() and relied on simple_strto
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:a9130c5a0a5b94bf9734b8be60abcfef98df718123c9fdd974afccc9a04d490c
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_conntrack_sip.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":"2.6.26"},{"lessThan":"2.6.26","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"…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d8b2635b9917f8fe870fa74b88861de518b88207245f3f5b7b7f78afec69bf0d · sha256:e80aa5b6a08d72da… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/netfilter/nf_conntrack_sip.c","net/netfilter/nf_nat_sip.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"8cd0358379570003659186706e077929d6930c40","status":"affected","version":"05e3ced297fe755093140e7487e292fb7603316e","versionType":"git"},{"lessThan":"9c6afcb1c3cbb2c0da65b8515ac14d7273872f84","status":"affected","version":"05e3ced297fe755093140e7487e292fb7603316e","versionType":"git"},{"lessThan":"b3264c977e79d8a25778d4fd11520f00fea1329c","status":"affec…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d8b2635b9917f8fe870fa74b88861de518b88207245f3f5b7b7f78afec69bf0d · sha256:e80aa5b6a08d72da… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["net/netfilter/nf_conntrack_sip.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":"2.6.26"},{"lessThan":"2.6.26","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"…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d8b2635b9917f8fe870fa74b88861de518b88207245f3f5b7b7f78afec69bf0d · sha256:e80aa5b6a08d72da… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/netfilter/nf_conntrack_sip.c","net/netfilter/nf_nat_sip.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"8cd0358379570003659186706e077929d6930c40","status":"affected","version":"05e3ced297fe755093140e7487e292fb7603316e","versionType":"git"},{"lessThan":"9c6afcb1c3cbb2c0da65b8515ac14d7273872f84","status":"affected","version":"05e3ced297fe755093140e7487e292fb7603316e","versionType":"git"},{"lessThan":"b3264c977e79d8a25778d4fd11520f00fea1329c","status":"affec…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d8b2635b9917f8fe870fa74b88861de518b88207245f3f5b7b7f78afec69bf0d · sha256:e80aa5b6a08d72da… · /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:d8b2635b9917f8fe870fa74b88861de518b88207245f3f5b7b7f78afec69bf0d · sha256:e80aa5b6a08d72da… · /containers/cna/metrics/0/cvssV3_1

Source references

8 source assertions
{"url":"https://git.kernel.org/stable/c/523762e3b6933fff81f01dfa3c60c0774044cdab"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d8b2635b9917f8fe870fa74b88861de518b88207245f3f5b7b7f78afec69bf0d · sha256:e80aa5b6a08d72da… · /containers/cna/references/6
{"url":"https://git.kernel.org/stable/c/7df9863bf538a626e8a684e59cb2c43eac0ef3c8"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d8b2635b9917f8fe870fa74b88861de518b88207245f3f5b7b7f78afec69bf0d · sha256:e80aa5b6a08d72da… · /containers/cna/references/5
{"url":"https://git.kernel.org/stable/c/8cd0358379570003659186706e077929d6930c40"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d8b2635b9917f8fe870fa74b88861de518b88207245f3f5b7b7f78afec69bf0d · sha256:e80aa5b6a08d72da… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/8cf6809cddcbe301aedfc6b51bcd4944d45795f6"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d8b2635b9917f8fe870fa74b88861de518b88207245f3f5b7b7f78afec69bf0d · sha256:e80aa5b6a08d72da… · /containers/cna/references/7
{"url":"https://git.kernel.org/stable/c/9c6afcb1c3cbb2c0da65b8515ac14d7273872f84"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d8b2635b9917f8fe870fa74b88861de518b88207245f3f5b7b7f78afec69bf0d · sha256:e80aa5b6a08d72da… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/9f69c323ae0ab517e595c2cc74e0ae0d9d085611"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d8b2635b9917f8fe870fa74b88861de518b88207245f3f5b7b7f78afec69bf0d · sha256:e80aa5b6a08d72da… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/b3264c977e79d8a25778d4fd11520f00fea1329c"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d8b2635b9917f8fe870fa74b88861de518b88207245f3f5b7b7f78afec69bf0d · sha256:e80aa5b6a08d72da… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/ea2ecd29b8f4433e52607192ca91084f95787ca0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d8b2635b9917f8fe870fa74b88861de518b88207245f3f5b7b7f78afec69bf0d · sha256:e80aa5b6a08d72da… · /containers/cna/references/3

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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