fbdev: Wrap user-invoked calls to fb_set_var() in helper
In the Linux kernel, the following vulnerability has been resolved: fbdev: Wrap user-invoked calls to fb_set_var() in helper Handle fbcon during display updates in fb_set_var_from_user(). Check with fbcon if the mode change is possible, update hardware state and finally update fbcon. Update all callers. Only the FBIOPUT_VSCREENINFO ioctl currently does all steps. Other mode-changes callers in sysfs and driver code are missing fbcon-related steps. With the new helper, ps3fb and sh_mobile_lcdcfb no longer maintain fbcon state themselves.
CVE-2026-80786
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-80786
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"lessThan": "3130e7bf43ecfe3a15bcf90b9698e0764a2d8d08",
"versionType": "git"
},
{
"status": "affected",
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"lessThan": "d33589eff3d40439b3c83e8da0d07d20df797d50",
"versionType": "git"
},
{
"status": "affected",
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"lessThan": "ed7e9715849abd0816b8487b0d12ebd05d6e938b",
"versionType": "git"
},
{
"status": "affected",
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"lessThan": "07f7e46833f71472e30da54a50dacdf48521bdd3",
"versionType": "git"
},
{
"status": "affected",
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"lessThan": "6f611e5e5f3327cf2e2daabe6ee5acac58cc784e",
"versionType": "git"
}
],
"programFiles": [
"drivers/video/fbdev/core/fb_chrdev.c",
"drivers/video/fbdev/core/fbcon.c",
"drivers/video/fbdev/core/fbmem.c",
"drivers/video/fbdev/core/fbsysfs.c",
"drivers/video/fbdev/ps3fb.c",
"drivers/video/fbdev/sh_mobile_lcdcfb.c",
"include/linux/fb.h"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.12"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.12",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.114",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.57",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.11",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/video/fbdev/core/fb_chrdev.c",
"drivers/video/fbdev/core/fbcon.c",
"drivers/video/fbdev/core/fbmem.c",
"drivers/video/fbdev/core/fbsysfs.c",
"drivers/video/fbdev/ps3fb.c",
"drivers/video/fbdev/sh_mobile_lcdcfb.c",
"include/linux/fb.h"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-80786
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #46638 · Revision 1
- Added to Heist Feed
- Publisher date