fbdev: fix potential buffer overflow in do_register_framebuffer()
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.2%
exploitation probability
0.2%top 93% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
fbdev: fix potential buffer overflow in do_register_framebuffer()
The current implementation may lead to buffer overflow when:
1. Unregistration creates NULL gaps in registered_fb[]
2. All array slots become occupied despite num_registered_fb < FB_MAX
3. The registration loop exceeds array bounds
Add boundary check to prevent registered_fb[FB_MAX] access.
Affected products
Linux · LinuxReferences
https://cert-portal.siemens.com/productcert/html/ssa-032379.htmlhttps://cert-portal.siemens.com/productcert/html/ssa-082556.htmlhttps://git.kernel.org/stable/c/248b2aab9b2af5ecf89d9d7955a2ff20c4b4a399https://git.kernel.org/stable/c/2828a433c7d7a05b6f27c8148502095101dd0b09https://git.kernel.org/stable/c/523b84dc7ccea9c4d79126d6ed1cf9033cf83b05https://git.kernel.org/stable/c/5c3f5a25c62230b7965804ce7a2e9305c3ca3961https://git.kernel.org/stable/c/806f85bdd3a60187c21437fc51baace11f659f35https://git.kernel.org/stable/c/cbe740de32bb0fb7a5213731ff5f26ea6718fca3https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html