CVE-2026-74635

🗓️ 22 Aug 2026 15:32:15Reported by LinuxType

Out-of-bounds read in Linux kernel fbdev bit_cursor() from unbounded glyph index.

Reporter	Title	Published	Views	Family All 7
Cvelist	CVE-2026-74635 fbdev: bitblit: bound-check glyph index in bit_cursor()	22 Aug 202615:32	–	cvelist
Debian CVE	CVE-2026-74635	22 Aug 202615:32	–	debiancve
EUVD	EUVD-2026-64572	22 Aug 202615:32	–	euvd
NVD	CVE-2026-74635	22 Aug 202616:16	–	nvd
OSV	DEBIAN-CVE-2026-74635	22 Aug 202616:16	–	osv
Positive Technologies	PT-2026-79640	22 Aug 202600:00	–	ptsecurity
SUSE CVE	SUSE CVE-2026-74635	23 Aug 202600:05	–	susecve

Vulners

CNA

Node

linux linux_kernelRange5.10.247–5.10.265

linux linux_kernelRange5.15.197–5.15.216

linux linux_kernelRange6.1.159–6.1.183

linux linux_kernelRange6.6.117–6.6.152

linux linux_kernelRange6.12.58–6.12.104

linux linux_kernelRange5.4.302–5.5

linux linux_kernelRange6.17.8–6.18

linux linux_kernelRange6.18–5.10.265

linux linux_kernelRange5.11.0–5.15.216

linux linux_kernelRange5.16.0–6.1.183

linux linux_kernelRange6.2.0–6.6.152

linux linux_kernelRange6.7.0–6.12.104

linux linux_kernelRange6.13.0–6.18.45

linux linux_kernelRange6.19.0–7.1.9

linux linux_kernelRange7.2.0≥

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/video/fbdev/core/bitblit.c"
    ],
    "versions": [
      {
        "version": "0998a6cb232674408a03e8561dc15aa266b2f53b",
        "lessThan": "250159ace2dc53c1bdad267aa8da51b638748700",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "db5c9a162d2f42bcc842b76b3d935dcc050a0eec",
        "lessThan": "46336f476484f36145e5117e72d7b590f47433ee",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "c12003bf91fdff381c55ef54fef3e961a5af2545",
        "lessThan": "bf750cfeacf4e47ac72dadc7f05839696efb8576",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "9ba1a7802ca9a2590cef95b253e6526f4364477f",
        "lessThan": "94134d70abf9273b70499d97d0adc9185ef21091",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "901f44227072be60812fe8083e83e1533c04eed1",
        "lessThan": "c1e7351767dd30fc574395c82121e4c67b882da3",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "18c4ef4e765a798b47980555ed665d78b71aeadf",
        "lessThan": "bc9db0d879c655d5dfd8add32fd60f13e65d132c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "18c4ef4e765a798b47980555ed665d78b71aeadf",
        "lessThan": "9ea879862e66e354e616028c31b39aa3eb6d35d8",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "18c4ef4e765a798b47980555ed665d78b71aeadf",
        "lessThan": "e033cbf3975a8465f879ebd5989dc35b04423a4d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "a10cede006f9614b465cf25609a8753efbfd45cc",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "efaf89a75a29b2d179bf4fe63ca62852e93ad620",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5.10.247",
        "lessThan": "5.10.265",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "5.15.197",
        "lessThan": "5.15.216",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "6.1.159",
        "lessThan": "6.1.183",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "6.6.117",
        "lessThan": "6.6.152",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "6.12.58",
        "lessThan": "6.12.104",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "5.4.302",
        "lessThan": "5.5",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "6.17.8",
        "lessThan": "6.18",
        "status": "affected",
        "versionType": "semver"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/video/fbdev/core/bitblit.c"
    ],
    "versions": [
      {
        "version": "6.18",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.18",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.265",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.216",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.183",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.152",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.104",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.45",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.9",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

Source	Link
git	www.git.kernel.org/stable/c/e033cbf3975a8465f879ebd5989dc35b04423a4d
git	www.git.kernel.org/stable/c/bc9db0d879c655d5dfd8add32fd60f13e65d132c
git	www.git.kernel.org/stable/c/250159ace2dc53c1bdad267aa8da51b638748700
git	www.git.kernel.org/stable/c/bf750cfeacf4e47ac72dadc7f05839696efb8576
git	www.git.kernel.org/stable/c/9ea879862e66e354e616028c31b39aa3eb6d35d8
git	www.git.kernel.org/stable/c/c1e7351767dd30fc574395c82121e4c67b882da3
git	www.git.kernel.org/stable/c/94134d70abf9273b70499d97d0adc9185ef21091
git	www.git.kernel.org/stable/c/46336f476484f36145e5117e72d7b590f47433ee

22 Aug 2026 16:16Current

6.1Medium risk

Vulners AI Score6.1