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  4. CVE 2026 80579 fbdev clear fbinfo mode before deleting a
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Back to active CVEs
High · CVSS 7.8CVE-2026-80579

fbdev: clear fb_info->mode before deleting a videomodeCVE-2026-80579

Answer in brief

CVE-2026-80579 records a High severity (CVSS 7.8) vulnerability in fbdev: clear fb_info->mode before deleting a videomode. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 26, 2026Updated Aug 27, 2026Source checked Oct 10, 2026First seen by HOL Aug 26, 2026Material review Aug 27, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.8
Exploitation
Not marked as known exploited
Affected software
3 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Linux/Linuxgeneric>=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ce7fef961c63229b22dec415fb988899f479d61f || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <95e647d2a5304a8fd11f1ba3c8502de700650131 || >=0 <7.1.10ce7fef961c63229b22dec415fb988899f479d61f, 95e647d2a5304a8fd11f1ba3c8502de700650131, 7.1.10
Linux/Linuxgeneric>=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ce7fef961c63229b22dec415fb988899f479d61f || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <95e647d2a5304a8fd11f1ba3c8502de700650131ce7fef961c63229b22dec415fb988899f479d61f, 95e647d2a5304a8fd11f1ba3c8502de700650131
Linux/Linuxgeneric2.6.12Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux, Linux/Linux.
  2. 2Review the reported fix. Update Linux/Linux to ce7fef961c63229b22dec415fb988899f479d61f; Linux/Linux to ce7fef961c63229b22dec415fb988899f479d61f if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Aug 26, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Aug 27, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 26, 2026

Sources and claim methodology

  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
Upstream source description

In the Linux kernel, the following vulnerability has been resolved: fbdev: clear fb_info->mode before deleting a videomode fb_set_var() can delete a mode from info->modelist when userspace passes FB_ACTIVATE_INV_MODE through FBIOPUT_VSCREENINFO. The code checks that the mode being deleted is not the current info->var and that fbcon is not using it, but it does not check fb_info->mode. fb_info->mode may still point into the modelist entry being deleted. If the entry is freed, later mode sysfs reads through show_mode() can dereference a stale pointer. Clear fb_info->mode before calling fb_delete_videomode() when it matches the mode being removed.

Quoted source text, attributed separately from HOL analysis.

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Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
Not reported
Source
CVE List V5
Source checked
Oct 10, 2026
References
2 linked sources
Open source record