Answer in brief
CVE-2026-98623 records a Unknown severity vulnerability in drm/nouveau/clk: fix list cursor use after loop in nvkm_clk_ustate_update. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=7c856522069755ab9d163a24ac332cd3cb35fe30 <db5dd9f47b4df1be322f498d846e9a82940a7390 || >=7c856522069755ab9d163a24ac332cd3cb35fe30 <9d550924961f61a491dd95359c63494fa8a23d9f || >=7c856522069755ab9d163a24ac332cd3cb35fe30 <492e9cfa12f35f7946ea1b78a19f1f9337d62248 || >=7c856522069755ab9d163a24ac332cd3cb35fe30 <a867abcfa85ab487066c3d3008a1ba905da04113 || >=7c856522069755ab9d163a24ac332cd3cb35fe30 <5315c7bacfe274ddfe649d9556e9a341ffa812da || >=7c856522069755ab9d163a24ac332cd3cb35fe30 <0d096a7f7d79207490858dde731b16da5337e90c || >=7c856522069755ab9d163a24ac332cd3cb35fe30 <391517da7fd54ae40e4a7fe1cc696217343b0061 || >=7c856522069755ab9d163a24ac332cd3cb35fe30 <aff09d9e37e02dc60bde79035ac15b136d602259 | db5dd9f47b4df1be322f498d846e9a82940a7390, 9d550924961f61a491dd95359c63494fa8a23d9f, 492e9cfa12f35f7946ea1b78a19f1f9337d62248, a867abcfa85ab487066c3d3008a1ba905da04113, 5315c7bacfe274ddfe649d9556e9a341ffa812da, 0d096a7f7d79207490858dde731b16da5337e90c, 391517da7fd54ae40e4a7fe1cc696217343b0061, aff09d9e37e02dc60bde79035ac15b136d602259 |
| Linux/Linuxgeneric | 3.13 | Not reported |
Published upstream
Oct 18, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 18, 2026
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]
Quoted source text, attributed separately from HOL analysis.