CVE-2026-63810

🗓️ 19 Jul 2026 12:02:12Reported by LinuxType

The bdev pseudo-filesystem is unregistered to stop userspace mounting it and fix NULL pointer dereference.

Reporter	Title	Published	Views	Family All 12
ATTACKERKB	CVE-2026-63810	19 Jul 202612:02	–	attackerkb
Cvelist	CVE-2026-63810 block: Avoid mounting the bdev pseudo-filesystem in userspace	19 Jul 202612:02	–	cvelist
Debian CVE	CVE-2026-63810	19 Jul 202612:02	–	debiancve
EUVD	EUVD-2026-45476	19 Jul 202612:02	–	euvd
NVD	CVE-2026-63810	19 Jul 202612:16	–	nvd
OSV	CVE-2026-63810 block: Avoid mounting the bdev pseudo-filesystem in userspace	19 Jul 202612:02	–	osv
OSV	DEBIAN-CVE-2026-63810	19 Jul 202612:16	–	osv
OSV	UBUNTU-CVE-2026-63810	20 Jul 202600:00	–	osv
Positive Technologies	PT-2026-61126	19 Jul 202600:00	–	ptsecurity
RedhatCVE	CVE-2026-63810	21 Jul 202605:13	–	redhatcve

Vulners

CNA

Node

linux linux_kernelRange2.6.12–6.12.95

linux linux_kernelRange6.13.0–6.18.38

linux linux_kernelRange6.19.0–7.1.3

linux linux_kernelRange7.2.0–7.2-rc1

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "block/bdev.c"
    ],
    "versions": [
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "197971e6ffc0a6356b2ba2b22beb42bc0f7e412d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "3804e6de30ae7b053d53341d9d6944356cf23b40",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "717f721eb67d2dacd3ed5f7495aef2f442e84ce4",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "f73aa66dffcb8e61e78f01b56163ec16a15d06d2",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "block/bdev.c"
    ],
    "versions": [
      {
        "version": "2.6.12",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "2.6.12",
        "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"
      }
    ]
  }
]

Source	Link
git	www.git.kernel.org/stable/c/717f721eb67d2dacd3ed5f7495aef2f442e84ce4
git	www.git.kernel.org/stable/c/197971e6ffc0a6356b2ba2b22beb42bc0f7e412d
git	www.git.kernel.org/stable/c/f73aa66dffcb8e61e78f01b56163ec16a15d06d2
git	www.git.kernel.org/stable/c/3804e6de30ae7b053d53341d9d6944356cf23b40

19 Jul 2026 12:16Current

5.4Medium risk

Vulners AI Score5.4

EPSS0.00168