CVE-2026-64073

🗓️ 19 Jul 2026 15:39:48Reported by LinuxType

Linux kernel PREEMPT_RT: fix use-after-free in irq_work_single by wrapping in RCU and synchronize_rcu.

Reporter	Title	Published	Views	Family All 8
Cvelist	CVE-2026-64073 irq_work: Fix use-after-free in irq_work_single() on PREEMPT_RT	19 Jul 202615:39	–	cvelist
EUVD	EUVD-2026-45646	19 Jul 202615:39	–	euvd
NVD	CVE-2026-64073	19 Jul 202616:17	–	nvd
OSV	CVE-2026-64073 irq_work: Fix use-after-free in irq_work_single() on PREEMPT_RT	19 Jul 202615:39	–	osv
OSV	DEBIAN-CVE-2026-64073	19 Jul 202616:17	–	osv
OSV	UBUNTU-CVE-2026-64073	20 Jul 202600:00	–	osv
Positive Technologies	PT-2026-61390	19 Jul 202600:00	–	ptsecurity
RedhatCVE	CVE-2026-64073	20 Jul 202617:11	–	redhatcve

Vulners

CNA

Node

linux linux_kernelRange5.16–6.1.175

linux linux_kernelRange6.2.0–6.6.142

linux linux_kernelRange6.7.0–6.12.92

linux linux_kernelRange6.13.0–6.18.34

linux linux_kernelRange6.19.0–7.0.11

linux linux_kernelRange7.1.0≥

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "kernel/irq_work.c"
    ],
    "versions": [
      {
        "version": "810979682ccc98dbd83f341c18a2e556c30a7164",
        "lessThan": "2dc79362302922cb18f35e262712b5e58de65442",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "810979682ccc98dbd83f341c18a2e556c30a7164",
        "lessThan": "eef4f71b46a9929ac33e968538c9dd5d96a02460",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "810979682ccc98dbd83f341c18a2e556c30a7164",
        "lessThan": "684a78183c54c23e70d1cba320f7fc184604210b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "810979682ccc98dbd83f341c18a2e556c30a7164",
        "lessThan": "18c0456ea2615b1a743a6db739c74411c3b42bc6",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "810979682ccc98dbd83f341c18a2e556c30a7164",
        "lessThan": "81b582784518196eff1050212a046bc29d3a05dd",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "810979682ccc98dbd83f341c18a2e556c30a7164",
        "lessThan": "91840be8f710370607f949a627e070896faeddb8",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "kernel/irq_work.c"
    ],
    "versions": [
      {
        "version": "5.16",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.16",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.175",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.142",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.92",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.34",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0.11",
        "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/91840be8f710370607f949a627e070896faeddb8
git	www.git.kernel.org/stable/c/18c0456ea2615b1a743a6db739c74411c3b42bc6
git	www.git.kernel.org/stable/c/eef4f71b46a9929ac33e968538c9dd5d96a02460
git	www.git.kernel.org/stable/c/81b582784518196eff1050212a046bc29d3a05dd
git	www.git.kernel.org/stable/c/684a78183c54c23e70d1cba320f7fc184604210b
git	www.git.kernel.org/stable/c/2dc79362302922cb18f35e262712b5e58de65442

20 Jul 2026 15:17Current

5.8Medium risk

Vulners AI Score5.8

CVSS 3.17.8

EPSS0.00186