CVE-2026-49743 json
GPU DDK - Write UAF of sync checkpoint in GPU kick function after export fence file descriptor is prematurely closed
published 2026-07-24 3 mo ago modified 2026-10-24 16 d ago also EUVD-2026-48532
- cvss
- 7.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 5%
- public exploits
- 0
- none known
Summary
Software installed and run as a non-privileged user may conduct improper GPU system calls to manipulate the lifetimes of synchronisation objects in the kernel, leading to read/write UAFs.
During workload submission involving a fence exported by the GPU driver, the reference count of the underlying synchronisation primitive is not properly incremented. This can be exploited, by destroying the exported fence and prematurely release the underlying primitive, resulting in a potential use-after-free condition.
Patch / fix
- Imagination Technologies Graphics DDK 1.18 RTM2, 23.2 RTM2, 26.1 RTM2
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 3 mo ago
Exploit prediction
0.16% chance of exploitation in the next 30 days, higher than 5% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Imagination Technologies Graphics DDK
Classification
- Weakness
-
- CWE-416 Use After Free
References
-
imaginationtech.com
/gpu-driver-vulnerabilities/
vendor-advisory
Sources
- CVE List CVE-2026-49743
- NVD CVE-2026-49743
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