CVE-2026-31649

🗓️ 24 Apr 2026 14:45:02Reported by LinuxType

Linux kernel stmmac chain mode fixes integer underflow in jumbo frames by clamping len to min(nopaged_len, bmax).

Reporter	Title	Published	Views	Family All 67
ATTACKERKB	CVE-2026-31649	24 Apr 202614:45	–	attackerkb
CBLMariner	CVE-2026-31649 affecting package kernel for versions less than 6.6.137.1-1	3 May 202620:52	–	cbl_mariner
Circl	CVE-2026-31649	5 May 202620:00	–	circl
CNNVD	Linux kernel 安全漏洞	24 Apr 202600:00	–	cnnvd
Cvelist	CVE-2026-31649 net: stmmac: fix integer underflow in chain mode	24 Apr 202614:45	–	cvelist
Debian	[SECURITY] [DLA 4561-1] linux-6.1 security update	2 May 202608:40	–	debian
Debian	[SECURITY] [DLA 4606-1] linux security update	29 May 202616:36	–	debian
Debian	[SECURITY] [DSA 6238-1] linux security update	30 Apr 202620:05	–	debian
Debian	[SECURITY] [DSA 6243-1] linux security update	1 May 202619:10	–	debian
Debian CVE	CVE-2026-31649	24 Apr 202614:45	–	debiancve

NVD

Vulners

CNA

Node

linux linux_kernelRange3.2.1–5.10.253

linux linux_kernelRange5.11–5.15.203

linux linux_kernelRange5.16–6.1.169

linux linux_kernelRange6.2–6.6.135

linux linux_kernelRange6.7–6.12.82

linux linux_kernelRange6.13–6.18.23

linux linux_kernelRange6.19–6.19.13

linux linux_kernelMatch3.2-

linux linux_kernelMatch7.0rc1

linux linux_kernelMatch7.0rc2

linux linux_kernelMatch7.0rc3

linux linux_kernelMatch7.0rc4

linux linux_kernelMatch7.0rc5

linux linux_kernelMatch7.0rc6

linux linux_kernelMatch7.0rc7

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/net/ethernet/stmicro/stmmac/chain_mode.c"
    ],
    "versions": [
      {
        "version": "286a837217204b1ef105e3a554d0757e4fdfaac1",
        "lessThan": "513e06735f5be575b409d195822195348b164e48",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "286a837217204b1ef105e3a554d0757e4fdfaac1",
        "lessThan": "275bdf762e82082f064e60a92448fa2ac43cf95b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "286a837217204b1ef105e3a554d0757e4fdfaac1",
        "lessThan": "a2b68a9a476b9544ff31f1fbcd5d80867a8a5e2f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "286a837217204b1ef105e3a554d0757e4fdfaac1",
        "lessThan": "b7b8012193fd98236d7ae05d4b553f010a77b2ef",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "286a837217204b1ef105e3a554d0757e4fdfaac1",
        "lessThan": "2c91b39912278d0878f9ba60ba04d2518b18a08d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "286a837217204b1ef105e3a554d0757e4fdfaac1",
        "lessThan": "6fca757c20396dc2e604dcc61922264e9e3dc803",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "286a837217204b1ef105e3a554d0757e4fdfaac1",
        "lessThan": "10d12b9240ebf96c785f0e2e4228318cd5f3a3eb",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "286a837217204b1ef105e3a554d0757e4fdfaac1",
        "lessThan": "51f4e090b9f87b40c21b6daadb5c06e6c0a07b67",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/net/ethernet/stmicro/stmmac/chain_mode.c"
    ],
    "versions": [
      {
        "version": "3.2",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "3.2",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.253",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.203",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.169",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.135",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.82",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.23",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.19.13",
        "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/51f4e090b9f87b40c21b6daadb5c06e6c0a07b67
git	www.git.kernel.org/stable/c/6fca757c20396dc2e604dcc61922264e9e3dc803
git	www.git.kernel.org/stable/c/2c91b39912278d0878f9ba60ba04d2518b18a08d
git	www.git.kernel.org/stable/c/b7b8012193fd98236d7ae05d4b553f010a77b2ef
git	www.git.kernel.org/stable/c/10d12b9240ebf96c785f0e2e4228318cd5f3a3eb
git	www.git.kernel.org/stable/c/513e06735f5be575b409d195822195348b164e48
git	www.git.kernel.org/stable/c/275bdf762e82082f064e60a92448fa2ac43cf95b
git	www.git.kernel.org/stable/c/a2b68a9a476b9544ff31f1fbcd5d80867a8a5e2f

17 Jun 2026 10:34Current

6Medium risk

Vulners AI Score6

CVSS 3.19.8

EPSS0.00406

CWE-190