CVE-2026-100070 (GCVE-0-2026-100070)

Vulnerability from cvelistv5 – Published: 2026-09-25 13:06 – Updated: 2026-09-25 13:06
VLAI
Title
netfilter: nf_nat_sip: rewind offset when NAT shrinks the packet
Summary
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_nat_sip: rewind offset when NAT shrinks the packet sashiko says: If map_addr() changes the packet length, such as when the public NAT IP string is shorter or longer than the internal IP, coff will still point to the offset relative to the pre-mangled packet. If the packet shrinks, coff could overshoot the correct position, potentially causing the next ct_sip_parse_header_uri() call to silently skip bytes and miss subsequent Contact headers. Could this lead to a failure to NAT those subsequent headers and leak internal network details?
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: c978cd3a937141deaf7995b849824af6dacdeae7 , < 6828aca3d82717c2fda92af81c0dda642bc2b465 (git)
Affected: c978cd3a937141deaf7995b849824af6dacdeae7 , < 2703f5ea8d85bc729f433ac09ee902084c947122 (git)
Affected: c978cd3a937141deaf7995b849824af6dacdeae7 , < 0f4d30e2e49f343fc28ba1e259fd22969b940c46 (git)
Affected: c978cd3a937141deaf7995b849824af6dacdeae7 , < 810da5a63549531da78348b0a4545042d84e01e2 (git)
Affected: c978cd3a937141deaf7995b849824af6dacdeae7 , < 668cc1c30caedc63070b10d17d5514748988a140 (git)
Affected: c978cd3a937141deaf7995b849824af6dacdeae7 , < e70d48fcf8382581162608a4a322919bfd22aef3 (git)
Affected: c978cd3a937141deaf7995b849824af6dacdeae7 , < c408d416618ebb8a95e3097a13f3b793ea9272ee (git)
Affected: c978cd3a937141deaf7995b849824af6dacdeae7 , < 16aecbe3036f6097c26b51b12e4c1cf207769690 (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.26
Unaffected: 0 , < 2.6.26 (semver)
Unaffected: 5.10.270 , ≤ 5.10.* (semver)
Unaffected: 5.15.221 , ≤ 5.15.* (semver)
Unaffected: 6.1.188 , ≤ 6.1.* (semver)
Unaffected: 6.6.157 , ≤ 6.6.* (semver)
Unaffected: 6.12.110 , ≤ 6.12.* (semver)
Unaffected: 6.18.52 , ≤ 6.18.* (semver)
Unaffected: 7.2.6 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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        }
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      "id": "CVE-2026-100070",
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      "product_status:known_affected": "343",
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      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-100070",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-100070.json",
      "version": "2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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