CVE-2026-68273drm/amdgpu: Fix context pstate override handling
- 7.8HighCVSS base score
- 0.13%Exploitation in 30 daysEPSS · top 97% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Fix context pstate override handling There are several problems in the context pstate handling code. The most serious ones are potential use-after-free and NULL pointer dereferences at context initialization time. Both are due amdgpu_ctx_init() not holding the adev->pm.stable_pstate_ctx_lock, which is otherwise used from both sysfs and the context code itself for modifying and clearing the stored context pointer. Second issue is that context fini can trample over the pstate configuration set via sysfs. This is due the restore state (ctx->stable_pstate) being saved at context init time, and not if, or when the context actually changes the pstate. As the context exits it will therefore incorrectly restore to what was set before the sysfs override was requested. The simplest fix is to drastically simplify how the state is tracked, by clearly defining the points at which pstate ownership is taken and released, and to handle all transitions under the correct lock. Instead of at context init time, the previous state is saved only at the point the context overrides the current state, and is restored on context exit only if the context is still the owner of the current override state. (cherry picked from commit 1b5e413713c0a93bc1818394d0ce49aaad21bd27)
Timeline
ID reserved
By Linux
- 11 days later
· 11 days later
Published
- 3 months later
· 3 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Received | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.13% · top 97% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected 79610d3041338dc1ef554d6fd8b3b3e23be527f5 – < ebed6179c993f07da24d0a454816e7da790377af
- affected 79610d3041338dc1ef554d6fd8b3b3e23be527f5 – < 3531910845165dcf1a213267199ccc97e03cd58a
- affected 79610d3041338dc1ef554d6fd8b3b3e23be527f5 – < 23a8726e1d7597fe7c9a59d5dc42ba8b7d345b8a
- affected 79610d3041338dc1ef554d6fd8b3b3e23be527f5 – < e06c39cc1c48dca68a5ffd971c23025a52d46634
- affected 79610d3041338dc1ef554d6fd8b3b3e23be527f5 – < 9f9c88eb298c54348be3ca4087f4f4c615065b87
- affected 79610d3041338dc1ef554d6fd8b3b3e23be527f5 – < c1dc4ccb82c9e56325d8e7514ca4c90bd1efb351
- affected 6607901fce79959130db485e7549dacaaeef034e
- affected 6.0.7 – < 6.1
- affected 6.1
- unaffected < 6.1
- unaffected 6.1.191 – ≤ 6.1.*
- unaffected 6.6.160 – ≤ 6.6.*
- unaffected 6.12.103 – ≤ 6.12.*
- unaffected 6.18.44 – ≤ 6.18.*
- unaffected 7.1.6 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References6
- https://git.kernel.org/stable/c/ebed6179c993f07da24d0a454816e7da790377af (opens in a new tab)
- https://git.kernel.org/stable/c/3531910845165dcf1a213267199ccc97e03cd58a (opens in a new tab)
- https://git.kernel.org/stable/c/23a8726e1d7597fe7c9a59d5dc42ba8b7d345b8a (opens in a new tab)
- https://git.kernel.org/stable/c/e06c39cc1c48dca68a5ffd971c23025a52d46634 (opens in a new tab)
- https://git.kernel.org/stable/c/9f9c88eb298c54348be3ca4087f4f4c615065b87 (opens in a new tab)
- https://git.kernel.org/stable/c/c1dc4ccb82c9e56325d8e7514ca4c90bd1efb351 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-55374 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-68273)Record last updated .