CVE-2026-90392

Last refreshed2026-10-19

Status: UPDATED | Advisory ID: CVE-2026-90392

Key Details

CVE	CVE-2026-90392
CVSS Score / Version	7.8 (High) / CVSS v3.1
Updated	2026-10-19
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:

bpf: Fix potential UAF when reading bpf link info

In bpf_link_show_fdinfo and bpf_link_get_info_by_fd, link->prog is

accessed without holding any locks. If the prog is concurrently replaced

via bpf_link_update, the old prog can be freed, leading to a potential

UAF issue.

Fix this by accessing link->prog under RCU protection to safely fetch

the pointer and guarantee its lifetime while reading its fields. (NVD)

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

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-90392
CVE	https://www.cve.org/CVERecord?id=CVE-2026-90392

Source

Reference

NVD

CVE