CVE-2026-31472 xfrm: iptfs: validate inner IPv4 header length in IPTFS payload

🗓️ 22 Apr 2026 13:54:00Reported by LinuxType

IPTFS validates inner IPv4 header length in decrypted payloads to prevent infinite loop by rejecting invalid tot_len and ihl values.

Reporter	Title	Published	Views	Family All 14
AstraLinux	Astra Linux - уязвимость в linux-5.10	20 May 202605:53	–	astralinux
CNNVD	Linux kernel 安全漏洞	22 Apr 202600:00	–	cnnvd
CVE	CVE-2026-31472	22 Apr 202613:54	–	cve
Debian CVE	CVE-2026-31472	22 Apr 202613:54	–	debiancve
EUVD	EUVD-2026-24823	22 Apr 202615:31	–	euvd
NVD	CVE-2026-31472	22 Apr 202614:16	–	nvd
OSV	BELL-CVE-2026-31472 CVE-2026-31472 does not affect BellSoft software	25 Apr 202606:10	–	osv
OSV	DEBIAN-CVE-2026-31472	22 Apr 202614:16	–	osv
OSV	UBUNTU-CVE-2026-31472	22 Apr 202614:16	–	osv
Positive Technologies	PT-2026-34377	22 Apr 202600:00	–	ptsecurity

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/xfrm/xfrm_iptfs.c"
    ],
    "versions": [
      {
        "version": "6c82d2433671819a550227bf65bfb6043e3d3305",
        "lessThan": "de6d8e8ce5187f7402c9859b443355e7120c5f09",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6c82d2433671819a550227bf65bfb6043e3d3305",
        "lessThan": "3db7d4f777a00164582061ccaa99569cd85011a3",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6c82d2433671819a550227bf65bfb6043e3d3305",
        "lessThan": "0d10393d5eac33cbd92f7a41fddca12c41d3cb7e",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/xfrm/xfrm_iptfs.c"
    ],
    "versions": [
      {
        "version": "6.14",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.14",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.21",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.19.11",
        "lessThanOrEqual": "6.19.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

Source	Link
git	www.git.kernel.org/stable/c/3db7d4f777a00164582061ccaa99569cd85011a3
git	www.git.kernel.org/stable/c/0d10393d5eac33cbd92f7a41fddca12c41d3cb7e
git	www.git.kernel.org/stable/c/de6d8e8ce5187f7402c9859b443355e7120c5f09

11 May 2026 22:09Current

EPSS0.00015