CVE-2026-52936 crypto: jitterentropy - replace long-held spinlock with mutex

🗓️ 24 Jun 2026 07:14:26Reported by LinuxType

Linux kernel fix: jitterentropy uses mutex instead of spinlock to let contended readers sleep.

Reporter	Title	Published	Views	Family All 22
ATTACKERKB	CVE-2026-52936	24 Jun 202607:14	–	attackerkb
Amazon	Important: kernel6.18	22 Jun 202600:00	–	amazon
CBLMariner	CVE-2026-52936 affecting package kernel for versions less than 6.6.143.1-1	8 Jul 202616:02	–	cbl_mariner
Circl	CVE-2026-52936	24 Jun 202610:36	–	circl
CVE	CVE-2026-52936	24 Jun 202607:14	–	cve
Debian CVE	CVE-2026-52936	24 Jun 202607:14	–	debiancve
EUVD	EUVD-2026-38706	24 Jun 202607:14	–	euvd
Microsoft CVE	crypto: jitterentropy - replace long-held spinlock with mutex	27 Jun 202608:12	–	mscve
NVD	CVE-2026-52936	24 Jun 202608:16	–	nvd
OSV	BELL-CVE-2026-52936	25 Jun 202606:11	–	osv

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "crypto/jitterentropy-kcapi.c"
    ],
    "versions": [
      {
        "version": "bb5530e4082446aac3a3d69780cd4dbfa4520013",
        "lessThan": "18216b8ab6904753eaf31baf453cb02ecd202ba4",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "bb5530e4082446aac3a3d69780cd4dbfa4520013",
        "lessThan": "4c03e6eb98443dc4d6d422a9780034a5b75376b4",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "bb5530e4082446aac3a3d69780cd4dbfa4520013",
        "lessThan": "ff734dbd9e2432601a6dcd167cfb0bf8a36d1880",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "bb5530e4082446aac3a3d69780cd4dbfa4520013",
        "lessThan": "ec427dc5286da1ed08f2d510e2147a7581b0cb02",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "bb5530e4082446aac3a3d69780cd4dbfa4520013",
        "lessThan": "01d798e9feb30212952d4e992801ba6bd6a82351",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "crypto/jitterentropy-kcapi.c"
    ],
    "versions": [
      {
        "version": "4.2",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.2",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.141",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.91",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.33",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0.10",
        "lessThanOrEqual": "7.0.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

Source	Link
git	www.git.kernel.org/stable/c/ec427dc5286da1ed08f2d510e2147a7581b0cb02
git	www.git.kernel.org/stable/c/18216b8ab6904753eaf31baf453cb02ecd202ba4
git	www.git.kernel.org/stable/c/4c03e6eb98443dc4d6d422a9780034a5b75376b4
git	www.git.kernel.org/stable/c/ff734dbd9e2432601a6dcd167cfb0bf8a36d1880
git	www.git.kernel.org/stable/c/01d798e9feb30212952d4e992801ba6bd6a82351

24 Jun 2026 07:14Current

EPSS0.00114