VulnerabilityPublished 3 Apr 2026Updated 5 Nov 2026

CVE-2026-23468: Linux kernel · drm/amdgpu: Limit BO list entry count to prevent resource exhaustion

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in f462624a6e4b5f1ec2664c2c53e408b2f4fb53e9 : update Linux kernel when convenient.

Data as of 5 Nov 2026, 22:04 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-05.

Patch

Available – fixed in f462624a6e4b5f1ec2664c2c53e408b2f4fb53e9, e620378aab78d415bd8a15a2f91c145906520288, c833d6c7199c5b5fca9ec95593acd539ec9c171c +3

Exploitation evidence

Disclosed: evidence found.
CVE published 3 Apr 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ d38ceaf99ed015f2a0b9af3499791bd3a3daae21, < f462624a6e4b5f1ec2664c2c53e408b2f4fb53e9	Fixed in f462624a6e4b5f1ec2664c2c53e408b2f4fb53e9
LinuxLinux	Affected ≥ d38ceaf99ed015f2a0b9af3499791bd3a3daae21, < e620378aab78d415bd8a15a2f91c145906520288	Fixed in e620378aab78d415bd8a15a2f91c145906520288
LinuxLinux	Affected ≥ d38ceaf99ed015f2a0b9af3499791bd3a3daae21, < c833d6c7199c5b5fca9ec95593acd539ec9c171c	Fixed in c833d6c7199c5b5fca9ec95593acd539ec9c171c
LinuxLinux	Affected ≥ d38ceaf99ed015f2a0b9af3499791bd3a3daae21, < 6270b1a5dab94665d7adce3dc78bc9066ed28bdd	Fixed in 6270b1a5dab94665d7adce3dc78bc9066ed28bdd
LinuxLinux	Affected ≥ d38ceaf99ed015f2a0b9af3499791bd3a3daae21, < 2723e6851309531ce61aed74e93a0cd268cc862a	Fixed in 2723e6851309531ce61aed74e93a0cd268cc862a
LinuxLinux	Affected ≥ d38ceaf99ed015f2a0b9af3499791bd3a3daae21, < 5ce4a38e6c2488949e373d5066303f9c128db614	Fixed in 5ce4a38e6c2488949e373d5066303f9c128db614

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Limit BO list entry count to prevent resource exhaustion Userspace can pass an arbitrary number of BO list entries via the bo_number field. Although the previous multiplication overflow check prevents out-of-bounds allocation, a large number of entries could still cause excessive memory allocation (up to potentially gigabytes) and unnecessarily long list processing times. Introduce a hard limit of 128k entries per BO list, which is more than sufficient for any realistic use case (e.g., a single list containing all buffers in a large scene). This prevents memory exhaustion attacks and ensures predictable performance. Return -EINVAL if the requested entry count exceeds the limit (cherry picked from commit 688b87d39e0aa8135105b40dc167d74b5ada5332)

References

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