CVE-2026-89992
8.4 HIGHPublished 2026-09-16 · Updated 2026-09-16
AI risk analysis
- Summary
- The vulnerability in the Linux kernel's cpuidle module allows for a potential out-of-bounds free error, leading to a denial of service or possibly other kernel memory issues.
- Exploitability
- Exploitation requires kernel-level access and specific conditions, making it relatively difficult. Precondition is the presence of a vulnerable kernel version.
- Blast radius
- If exploited, the impact could be limited to the affected system experiencing a denial of service, but the exact extent depends on the system's role and configuration.
- Detection
- No reliable host or network indicator is derivable from the published description.
- Prioritized remediation
- Upgrade to the fixed version 5.19.60 or later.
doskernelmemory
Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.
NVD description
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- https://git.kernel.org/stable/c/09d002c8fb0261d35ce9d8a705de5db034ee90b8
- https://git.kernel.org/stable/c/1312ae33b91430ec99e69cd3d47f0e50a4ebf54b
- https://git.kernel.org/stable/c/2b0ac85512b7f67479127b2713254490662eb13d
- https://git.kernel.org/stable/c/3394c7ba23336bdb7ece29127130fd01731d42d8
- https://git.kernel.org/stable/c/a38caa9ed0d5c61c17d88393b14b292199289c1f
- https://git.kernel.org/stable/c/b519dfce1998c323e54a56f911cf708d9ba0e076
Data: NVD (public domain). Analysis: local $0 model. Defensive use only.