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CVE-2026-74569 netfilter: nf_conntrack_sip: widen NAT rewrite delta to s32 in sip_help_tcp()

🗓️ 15 Aug 2026 12:28:09Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 6 Views

Integer overflow in nf_conntrack_sip sip_help_tcp causes use-after-free during NAT rewrite of large SIP messages.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
ATTACKERKB
CVE-2026-74569
15 Aug 202612:28
attackerkb
cve
CVE
CVE-2026-74569
15 Aug 202600:00
cve
debiancve
Debian CVE
CVE-2026-74569
15 Aug 202600:00
debiancve
euvd
EUVD
EUVD-2026-59634
15 Aug 202612:28
euvd
nvd
NVD
CVE-2026-74569
15 Aug 202613:18
nvd
osv
OSV
DEBIAN-CVE-2026-74569
15 Aug 202613:18
osv
ptsecurity
Positive Technologies
PT-2026-73021
15 Aug 202600:00
ptsecurity
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "include/linux/netfilter/nf_conntrack_sip.h",
      "net/netfilter/nf_conntrack_sip.c",
      "net/netfilter/nf_nat_sip.c"
    ],
    "versions": [
      {
        "version": "f5b321bd37fbec9188feb1f721ab46a5ac0b35da",
        "lessThan": "63eea41759fd682229c14e0a2205802b46d106f3",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f5b321bd37fbec9188feb1f721ab46a5ac0b35da",
        "lessThan": "c97621a110e386b2dd69e276eb699e1d3cec581d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f5b321bd37fbec9188feb1f721ab46a5ac0b35da",
        "lessThan": "f74554e67ccf04d1fa71069e8c9afa2717e40716",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f5b321bd37fbec9188feb1f721ab46a5ac0b35da",
        "lessThan": "ef5e2c6555d2bb52dfe0e4053a8c6193f9d83b64",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f5b321bd37fbec9188feb1f721ab46a5ac0b35da",
        "lessThan": "db3d0e0e5d4bc5ab4fe445b9f413d1b486508ca5",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "include/linux/netfilter/nf_conntrack_sip.h",
      "net/netfilter/nf_conntrack_sip.c",
      "net/netfilter/nf_nat_sip.c"
    ],
    "versions": [
      {
        "version": "2.6.34",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "2.6.34",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.151",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.103",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.44",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.8",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2-rc6",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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