fbdev: sis: Error out if pixclock equals zero
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 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: sis: Error out if pixclock equals zero
The userspace program could pass any values to the driver through
ioctl() interface. If the driver doesn't check the value of pixclock,
it may cause divide-by-zero error.
In sisfb_check_var(), var->pixclock is used as a divisor to caculate
drate before it is checked against zero. Fix this by checking it
at the beginning.
This is similar to CVE-2022-3061 in i740fb which was fixed by
commit 15cf0b8.
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/1d11dd3ea5d039c7da089f309f39c4cd363b924bhttps://git.kernel.org/stable/c/6db07619d173765bd8622d63809cbfe361f04207https://git.kernel.org/stable/c/84246c35ca34207114055a87552a1c4289c8fd7ehttps://git.kernel.org/stable/c/99f1abc34a6dde248d2219d64aa493c76bbdd9ebhttps://git.kernel.org/stable/c/cd36da760bd1f78c63c7078407baf01dd724f313https://git.kernel.org/stable/c/df6e2088c6f4cad539cf67cba2d6764461e798d1https://git.kernel.org/stable/c/e421946be7d9bf545147bea8419ef8239cb7ca52https://git.kernel.org/stable/c/f329523f6a65c3bbce913ad35473d83a319d5d99https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlhttps://lists.debian.org/debian-lts-announce/2024/06/msg00020.html