Answer in brief
CVE-2026-89992 records a High severity (CVSS 8.4) vulnerability in cpuidle: dt_idle_genpd: kfree() the original name allocation. 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.
CVSS is 8.4. 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 | >=9d976d6721dfb525b81ce981e1363c70c0975aab <1312ae33b91430ec99e69cd3d47f0e50a4ebf54b || >=9d976d6721dfb525b81ce981e1363c70c0975aab <a38caa9ed0d5c61c17d88393b14b292199289c1f || >=9d976d6721dfb525b81ce981e1363c70c0975aab <09d002c8fb0261d35ce9d8a705de5db034ee90b8 || >=9d976d6721dfb525b81ce981e1363c70c0975aab <b519dfce1998c323e54a56f911cf708d9ba0e076 || >=9d976d6721dfb525b81ce981e1363c70c0975aab <3394c7ba23336bdb7ece29127130fd01731d42d8 || >=9d976d6721dfb525b81ce981e1363c70c0975aab <2b0ac85512b7f67479127b2713254490662eb13d | 1312ae33b91430ec99e69cd3d47f0e50a4ebf54b, a38caa9ed0d5c61c17d88393b14b292199289c1f, 09d002c8fb0261d35ce9d8a705de5db034ee90b8, b519dfce1998c323e54a56f911cf708d9ba0e076, 3394c7ba23336bdb7ece29127130fd01731d42d8, 2b0ac85512b7f67479127b2713254490662eb13d |
| Linux/Linuxgeneric | 5.18 | Not reported |
Published upstream
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 16, 2026
In the Linux kernel, the following vulnerability has been resolved: cpuidle: dt_idle_genpd: kfree() the original name allocation dt_idle_pd_alloc() kasprintf()s the full node path, then points pd->name at kbasename() of that string. dt_idle_pd_free() kfree()s pd->name, which is no longer the start of the allocation. Copy the basename instead.
Quoted source text, attributed separately from HOL analysis.