CVE-2026-74590

Last refreshed2026-10-15

Status: UPDATED | Advisory ID: CVE-2026-74590

Key Details

CVE	CVE-2026-74590
CVSS Score / Version	7.8 (High) / CVSS v3.1
Updated	2026-10-14
CVSS Vector	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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 high; 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:

fsverity: Fix bpf_get_fsverity_digest() dynptr assumptions

The BPF verifier and the dynptr abstraction ensure that the memory space

referenced by a dynptr remains valid. They do not, however, provide any

guarantee that the contents of the memory are stable. kfuncs are

expected to remain memory-safe even if concurrent modifications occur.

bpf_get_fsverity_digest() didn't follow that: it could crash if

arg->digest_size was concurrently modified.

Fix that by using the known-good value hash_alg->digest_size instead.

Also widen 'dynptr_sz' and 'out_digest_sz' to u64 to match the return

type of __bpf_dynptr_size(). It doesn't appear that it can actually be

more than INT_MAX currently (since __bpf_dynptr_data_rw() excludes

file-based pointers), but the correct type might as well be used. (NVD)

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

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-74590
CVE	https://www.cve.org/CVERecord?id=CVE-2026-74590

Source

Reference

NVD

CVE