CVE-2024-40976drm/lima: mask irqs in timeout path before hard reset
- 5.5MediumCVSS base score
- 0.22%Exploitation in 30 daysEPSS · top 87% 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/lima: mask irqs in timeout path before hard reset There is a race condition in which a rendering job might take just long enough to trigger the drm sched job timeout handler but also still complete before the hard reset is done by the timeout handler. This runs into race conditions not expected by the timeout handler. In some very specific cases it currently may result in a refcount imbalance on lima_pm_idle, with a stack dump such as: [10136.669170] WARNING: CPU: 0 PID: 0 at drivers/gpu/drm/lima/lima_devfreq.c:205 lima_devfreq_record_idle+0xa0/0xb0 ... [10136.669459] pc : lima_devfreq_record_idle+0xa0/0xb0 ... [10136.669628] Call trace: [10136.669634] lima_devfreq_record_idle+0xa0/0xb0 [10136.669646] lima_sched_pipe_task_done+0x5c/0xb0 [10136.669656] lima_gp_irq_handler+0xa8/0x120 [10136.669666] __handle_irq_event_percpu+0x48/0x160 [10136.669679] handle_irq_event+0x4c/0xc0 We can prevent that race condition entirely by masking the irqs at the beginning of the timeout handler, at which point we give up on waiting for that job entirely. The irqs will be enabled again at the next hard reset which is already done as a recovery by the timeout handler.
Timeline
ID reserved
By Linux
Published
- 22 months later
· 22 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 |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.22% · top 87% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected a1d2a6339961efc078208dc3b2f006e9e9a8e119 – < 03e7b2f7ae4c0ae5fb8e4e2454ba4008877f196a
- affected a1d2a6339961efc078208dc3b2f006e9e9a8e119 – < 70aa1f2dec46b6fdb5f6b9f37b6bfa4a4dee0d3a
- affected a1d2a6339961efc078208dc3b2f006e9e9a8e119 – < 9fd8ddd23793a50dbcd11c6ba51f437f1ea7d344
- affected a1d2a6339961efc078208dc3b2f006e9e9a8e119 – < bdbc4ca77f5eaac15de7230814253cddfed273b1
- affected a1d2a6339961efc078208dc3b2f006e9e9a8e119 – < 58bfd311c93d66d8282bf21ebbf35cc3bb8ad9db
- affected a1d2a6339961efc078208dc3b2f006e9e9a8e119 – < a421cc7a6a001b70415aa4f66024fa6178885a14
- affected 5.2
- unaffected < 5.2
- unaffected 5.10.221 – ≤ 5.10.*
- unaffected 5.15.162 – ≤ 5.15.*
- unaffected 6.1.96 – ≤ 6.1.*
- unaffected 6.6.36 – ≤ 6.6.*
- unaffected 6.9.7 – ≤ 6.9.*
- unaffected 6.10 – ≤ *
References
References7
- https://git.kernel.org/stable/c/03e7b2f7ae4c0ae5fb8e4e2454ba4008877f196a (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/70aa1f2dec46b6fdb5f6b9f37b6bfa4a4dee0d3a (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/9fd8ddd23793a50dbcd11c6ba51f437f1ea7d344 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/bdbc4ca77f5eaac15de7230814253cddfed273b1 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/58bfd311c93d66d8282bf21ebbf35cc3bb8ad9db (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/a421cc7a6a001b70415aa4f66024fa6178885a14 (opens in a new tab)x_transferred
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html (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-2024-38772 (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-2024-40976)Record last updated .