PT-2026-30162 · Linux+1 · Linux Kernel+1

Published 2026-04-03 · Updated 2026-05-07 · CVE-2026-23468

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The Linux kernel contains a flaw in the drm/amdgpu subsystem where the number of BO list entries is not limited. Userspace can provide an arbitrary number of BO list entries via the bo number field. While a previous check prevents out-of-bounds allocation, a large number of entries can lead to excessive memory allocation, potentially reaching gigabytes, and prolonged list processing times. A limit of 128k entries per BO list has been introduced to prevent resource exhaustion and maintain predictable performance. The function returns -EINVAL if the entry count exceeds this limit.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Allocation of Resources Without Limits

Weakness Enumeration

CWE-770

Related Identifiers

CVE-2026-23468

ECHO-37BD-48CD-23B4

Affected Products

Linux Kernel

Amdgpu

References · 20

• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2404-CVE-2026-23468 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-23468 · Vendor Advisory
• https://git.kernel.org/stable/c/e620378aab78d415bd8a15a2f91c145906520288 · Patch
• https://osv.dev/vulnerability/BELL-CVE-2026-23468 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-23468 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-23468 · Security Note
• https://git.kernel.org/stable/c/5ce4a38e6c2488949e373d5066303f9c128db614 · Patch
• https://git.kernel.org/stable/c/6270b1a5dab94665d7adce3dc78bc9066ed28bdd · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-23468 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-23468 · Vendor Advisory
• https://git.kernel.org/stable/c/f462624a6e4b5f1ec2664c2c53e408b2f4fb53e9 · Patch
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2204-CVE-2026-23468 · Vendor Advisory
• https://git.kernel.org/stable/c/2723e6851309531ce61aed74e93a0cd268cc862a · Patch
• https://cve.org/CVERecord?id=CVE-2026-23468 · Security Note
• https://twitter.com/CVEnew/status/2040111858439647375 · Twitter Post