CVE-2026-98623 in Linux
요약
\~에 의해 MITRE • 2026. 10. 18.
In the Linux kernel, the following vulnerability has been resolved:
drm/nouveau/clk: fix list cursor use after loop in nvkm_clk_ustate_update
If list_for_each_entry() exits without hitting a break then "pstate" is not a valid pstate pointer. Introduce a "found" variable instead.
The check is reachable from userspace: nvkm_clk_ustate_update() takes the pstate id straight from the 'pstate' debugfs file, so requesting an id that is not in clk->states - or any id at all when the perf tables are broken and the list is empty - makes the pstate->pstate != req test dereference the list head cast to a struct nvkm_pstate, which is an out-of-bounds read.
[Francesco: rebased on drm-misc-next, expanded the commit message]
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.