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CVE-2026-89992

HIGHCVSS 8.4/10

Last modified

CVE-2026-89992 is a high-severity vulnerability rated 8.4/10 on the CVSS scale. 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..

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.

Metrics

CVSS 3.1
8.4/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 9d976d6721dfb525b81ce981e1363c70c0975aab, < 1312ae33b91430ec99e69cd3d47f0e50a4ebf54b; >= 9d976d6721dfb525b81ce981e1363c70c0975aab, < a38caa9ed0d5c61c17d88393b14b292199289c1f; >= 9d976d6721dfb525b81ce981e1363c70c0975aab, < 09d002c8fb0261d35ce9d8a705de5db034ee90b8; >= 9d976d6721dfb525b81ce981e1363c70c0975aab, < b519dfce1998c323e54a56f911cf708d9ba0e076; >= 9d976d6721dfb525b81ce981e1363c70c0975aab, < 3394c7ba23336bdb7ece29127130fd01731d42d8; >= 9d976d6721dfb525b81ce981e1363c70c0975aab, < 2b0ac85512b7f67479127b2713254490662eb13d
LinuxLinux5.18

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-89992?
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.
How severe is CVE-2026-89992?
CVE-2026-89992 has a CVSS score of 8.4/10 (HIGH severity).
How do I fix CVE-2026-89992?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST