CVE-2026-31652 mm/damon/stat: deallocate damon_call() failure leaking damon_ctx

🗓️ 24 Apr 2026 14:45:04Reported by LinuxType

Fix damon_stat_start leak by delaying damon_ctx deallocation until kdamond ends; return -EAGAIN if not ended.

Reporter	Title	Published	Views	Family All 16
ATTACKERKB	CVE-2026-31652	24 Apr 202614:45	–	attackerkb
AstraLinux	Astra Linux – Vulnerability in Linux 5.10	20 May 202605:53	–	astralinux
BDU FSTEC	The vulnerabilities of the functions damon_stat_start() and damon_stat_stop() in the mm/damon/stat.c module of the Linux kernel’s memory management subsystem allow an attacker to compromise the confidentiality, integrity, and accessibility of the protected information.	25 Aug 202600:00	–	bdu_fstec
CNNVD	Linux kernel 安全漏洞	24 Apr 202600:00	–	cnnvd
CVE	CVE-2026-31652	24 Apr 202614:45	–	cve
Debian CVE	CVE-2026-31652	24 Apr 202614:45	–	debiancve
EUVD	EUVD-2026-25545	24 Apr 202614:45	–	euvd
NVD	CVE-2026-31652	24 Apr 202615:16	–	nvd
OSV	BELL-CVE-2026-31652	3 May 202606:12	–	osv
OSV	DEBIAN-CVE-2026-31652	24 Apr 202615:16	–	osv

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "mm/damon/stat.c"
    ],
    "versions": [
      {
        "version": "405f61996d9d2e9d497cd9f6b66f41dc28d3d1d8",
        "lessThan": "447f8870b484f6596d7a7130e72bd0a3f1e037bb",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "405f61996d9d2e9d497cd9f6b66f41dc28d3d1d8",
        "lessThan": "16c92e9bf55fa049ddb5e894dc0623dacd46a620",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "405f61996d9d2e9d497cd9f6b66f41dc28d3d1d8",
        "lessThan": "4c04c6b47c361612b1d70cec8f7a60b1482d1400",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "mm/damon/stat.c"
    ],
    "versions": [
      {
        "version": "6.17",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.17",
        "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/447f8870b484f6596d7a7130e72bd0a3f1e037bb
git	www.git.kernel.org/stable/c/16c92e9bf55fa049ddb5e894dc0623dacd46a620
git	www.git.kernel.org/stable/c/4c04c6b47c361612b1d70cec8f7a60b1482d1400

11 May 2026 22:12Current

EPSS0.00115