fbdev: sisfb: Fix strbuf array overflow
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.8epss 0.3%
exploitation probability
0.3%top 85% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
fbdev: sisfb: Fix strbuf array overflow
The values of the variables xres and yres are placed in strbuf.
These variables are obtained from strbuf1.
The strbuf1 array contains digit characters
and a space if the array contains non-digit characters.
Then, when executing sprintf(strbuf, "%ux%ux8", xres, yres);
more than 16 bytes will be written to strbuf.
It is suggested to increase the size of the strbuf array to 24.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/11c0d49093b82f6c547fd419c41a982d26bdf5efhttps://git.kernel.org/stable/c/252f147b1826cbb30ae0304cf86b66d3bb12b743https://git.kernel.org/stable/c/41cf6f26abe4f491b694c54bd1aa2530369b7510https://git.kernel.org/stable/c/433c84c8495008922534c5cafdae6ff970fb3241https://git.kernel.org/stable/c/57c4f4db0a194416da237fd09dad9527e00cb587https://git.kernel.org/stable/c/688872c4ea4a528cd6a057d545c83506b533ee1fhttps://git.kernel.org/stable/c/889304120ecb2ca30674d89cd4ef15990b6a571chttps://git.kernel.org/stable/c/9cf14f5a2746c19455ce9cb44341b5527b5e19c3https://lists.debian.org/debian-lts-announce/2025/01/msg00001.htmlhttps://lists.debian.org/debian-lts-announce/2025/03/msg00002.html