CVE-2026-74567

Last refreshed2026-10-17

Status: UPDATED | Advisory ID: CVE-2026-74567

Key Details

CVE	CVE-2026-74567
CVSS Score / Version	7.1 (High) / CVSS v3.1
Updated	2026-10-16
CVSS Vector	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H`
CVSS Prose	attack vector is local; attack complexity is low; privileges required is low; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is none; availability impact is high.
Affected products	Linux Kernel

Vendor	Product	Affected Versions	Patch Status
Linux	Linux Kernel

Vendor

Product

Affected Versions

Patch Status

Linux

Linux Kernel

Subsystems	OT Supporting Infrastructure
Sectors	All Sectors

In the Linux kernel, the following vulnerability has been resolved:

keys: fix out-of-bounds read in keyring_get_key_chunk()

For description-level chunks keyring_get_key_chunk() advances the read

pointer by level * sizeof(long) past the inline prefix but only

bounds-checks the prefix, so a long enough key description is read past

its kmemdup(desc, desc_len + 1) allocation. Compute the full byte

offset and bounds-check the description against it before reading.

The walk only reaches a description-level chunk when two keys collide

through the hash, x, type and domain_tag chunks, so this is reached from

an unprivileged add_key(2) with a crafted pair of same-type keys whose

index hashes collide; KASAN reports a slab-out-of-bounds read. (NVD)

Monitor Linux's web page for any future patch releases.

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-74567
CVE	https://www.cve.org/CVERecord?id=CVE-2026-74567

Source

Reference

NVD

CVE