CVE-2025-68296 — Time-of-check Time-of-use (TOCTOU) Race Condition in Linux
Severity
7.2HIGHOSV
No vectorEPSS
0.0%
top 90.90%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedDec 16
Latest updateApr 6
Description
In the Linux kernel, the following vulnerability has been resolved:
drm, fbcon, vga_switcheroo: Avoid race condition in fbcon setup
Protect vga_switcheroo_client_fb_set() with console lock. Avoids OOB
access in fbcon_remap_all(). Without holding the console lock the call
races with switching outputs.
VGA switcheroo calls fbcon_remap_all() when switching clients. The fbcon
function uses struct fb_info.node, which is set by register_framebuffer().
As the fb-helper code currently sets up VGA swi…