VulnerabilityPublished 25 Jun 2026Updated 6 Nov 2026

CVE-2026-53190: Linux kernel · drm/virtio: fix dma_fence refcount leak on error in virtio_gpu_dma_fence_wait()

Affects Linux kernelSource CVE Database V5

Compare

Not known to be exploited · fixed in c0fffc874c264292e769f26194a2a5e66ce31810 : update Linux kernel when convenient.

Data as of 6 Nov 2026, 16:49 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, 2026-11-06.

Patch

Available – fixed in c0fffc874c264292e769f26194a2a5e66ce31810, 8348567a6afb24e2c9cafe8a321162d0eebe1411, 73524e9f96a278b521f257a78a845c49eb522bc1 +2

Exploitation evidence

Disclosed: evidence found.
CVE published 25 Jun 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 6 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 ≥ eba57fb5498f2858768321e64570caea188455b8, < c0fffc874c264292e769f26194a2a5e66ce31810	Fixed in c0fffc874c264292e769f26194a2a5e66ce31810
LinuxLinux	Affected ≥ eba57fb5498f2858768321e64570caea188455b8, < 8348567a6afb24e2c9cafe8a321162d0eebe1411	Fixed in 8348567a6afb24e2c9cafe8a321162d0eebe1411
LinuxLinux	Affected ≥ eba57fb5498f2858768321e64570caea188455b8, < 73524e9f96a278b521f257a78a845c49eb522bc1	Fixed in 73524e9f96a278b521f257a78a845c49eb522bc1
LinuxLinux	Affected ≥ eba57fb5498f2858768321e64570caea188455b8, < 898bd0ccfed71651b881660c5d20ad73b5203174	Fixed in 898bd0ccfed71651b881660c5d20ad73b5203174
LinuxLinux	Affected ≥ eba57fb5498f2858768321e64570caea188455b8, < 3f26bb732cc136ab20176697c92f32c9c84cb125	Fixed in 3f26bb732cc136ab20176697c92f32c9c84cb125
LinuxLinux	Affected =6.5	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: drm/virtio: fix dma_fence refcount leak on error in virtio_gpu_dma_fence_wait() dma_fence_unwrap_for_each() internally calls dma_fence_unwrap_first() which does cursor->chain = dma_fence_get(head), taking an extra reference. On normal loop completion, dma_fence_unwrap_next() releases this via dma_fence_chain_walk() -> dma_fence_put(). When virtio_gpu_do_fence_wait() fails and the function returns early from inside the loop, the cursor->chain reference is never released. This is the only caller in the entire kernel that does an early return inside dma_fence_unwrap_for_each. Add dma_fence_put(itr.chain) before the early return.

References

Community reviews

Loading reviews…