{"id":"CVE-2026-98623","published":"2026-10-18T16:17:15.237","lastModified":"2026-10-19T10:19:26.460","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/nouveau/clk: fix list cursor use after loop in nvkm_clk_ustate_update\n\nIf list_for_each_entry() exits without hitting a break then \"pstate\" is\nnot a valid pstate pointer.  Introduce a \"found\" variable instead.\n\nThe check is reachable from userspace: nvkm_clk_ustate_update() takes the\npstate id straight from the 'pstate' debugfs file, so requesting an id\nthat is not in clk->states - or any id at all when the perf tables are\nbroken and the list is empty - makes the pstate->pstate != req test\ndereference the list head cast to a struct nvkm_pstate, which is an\nout-of-bounds read.\n\n[Francesco: rebased on drm-misc-next, expanded the commit message]","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/0d096a7f7d79207490858dde731b16da5337e90c","tags":[]},{"url":"https://git.kernel.org/stable/c/391517da7fd54ae40e4a7fe1cc696217343b0061","tags":[]},{"url":"https://git.kernel.org/stable/c/492e9cfa12f35f7946ea1b78a19f1f9337d62248","tags":[]},{"url":"https://git.kernel.org/stable/c/5315c7bacfe274ddfe649d9556e9a341ffa812da","tags":[]},{"url":"https://git.kernel.org/stable/c/9d550924961f61a491dd95359c63494fa8a23d9f","tags":[]},{"url":"https://git.kernel.org/stable/c/a867abcfa85ab487066c3d3008a1ba905da04113","tags":[]},{"url":"https://git.kernel.org/stable/c/aff09d9e37e02dc60bde79035ac15b136d602259","tags":[]},{"url":"https://git.kernel.org/stable/c/db5dd9f47b4df1be322f498d846e9a82940a7390","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}