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CVE-2026-63802

🗓️ 19 Jul 2026 12:02:08Reported by LinuxType 
cve
 cve
🔗 web.nvd.nist.gov👁 7 Views

Fix use after free in block cgroup rstat flush by moving the flush from release callback to before call_rcu.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-63802
19 Jul 202612:02
attackerkb
Cvelist
CVE-2026-63802 blk-cgroup: fix UAF in __blkcg_rstat_flush()
19 Jul 202612:02
cvelist
EUVD
EUVD-2026-45468
19 Jul 202612:02
euvd
NVD
CVE-2026-63802
19 Jul 202612:16
nvd
OSV
CVE-2026-63802 blk-cgroup: fix UAF in __blkcg_rstat_flush()
19 Jul 202612:02
osv
OSV
DEBIAN-CVE-2026-63802
19 Jul 202612:16
osv
Positive Technologies
PT-2026-61118
19 Jul 202600:00
ptsecurity
SUSE CVE
SUSE CVE-2026-63802
19 Jul 202617:35
susecve
Vulners
CNA
Node
OR
linuxlinux_kernelRange6.3.96.4
OR
linuxlinux_kernelRange6.46.6.144
linuxlinux_kernelRange6.7.06.12.95
linuxlinux_kernelRange6.13.06.18.38
linuxlinux_kernelRange6.19.07.1.3
linuxlinux_kernelRange7.2.07.2-rc1
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "block/blk-cgroup.c"
    ],
    "versions": [
      {
        "version": "20cb1c2fb7568a6054c55defe044311397e01ddb",
        "lessThan": "96e545410c4f74c89d496c1d5d9ef8d08f14368b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "20cb1c2fb7568a6054c55defe044311397e01ddb",
        "lessThan": "bbebd9425cad3573d1527441753899b926525a0f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "20cb1c2fb7568a6054c55defe044311397e01ddb",
        "lessThan": "5e5b7f2ef854936e95dceb6a2fdfefcb7152d2c6",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "20cb1c2fb7568a6054c55defe044311397e01ddb",
        "lessThan": "afebe44facc48a61761e885bbb7f0380d4a603ec",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "20cb1c2fb7568a6054c55defe044311397e01ddb",
        "lessThan": "0ab5ee5a1badb58cbb2242617cb01a4972b1f2a2",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0f6090d90f627d8c58f939067d6c6821ce1b3c68",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6.3.9",
        "lessThan": "6.4",
        "status": "affected",
        "versionType": "semver"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "block/blk-cgroup.c"
    ],
    "versions": [
      {
        "version": "6.4",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.4",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.144",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.95",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.38",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.3",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2-rc1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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19 Jul 2026 12:16Current
5.4Medium risk
Vulners AI Score5.4
7