CVE-2024-50249ACPI: CPPC: Make rmw_lock a raw_spin_lock
- 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: ACPI: CPPC: Make rmw_lock a raw_spin_lock The following BUG was triggered: ============================= [ BUG: Invalid wait context ] 6.12.0-rc2-XXX #406 Not tainted ----------------------------- kworker/1:1/62 is trying to lock: ffffff8801593030 (&cpc_ptr->rmw_lock){+.+.}-{3:3}, at: cpc_write+0xcc/0x370 other info that might help us debug this: context-{5:5} 2 locks held by kworker/1:1/62: #0: ffffff897ef5ec98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2c/0x50 #1: ffffff880154e238 (&sg_policy->update_lock){....}-{2:2}, at: sugov_update_shared+0x3c/0x280 stack backtrace: CPU: 1 UID: 0 PID: 62 Comm: kworker/1:1 Not tainted 6.12.0-rc2-g9654bd3e8806 #406 Workqueue: 0x0 (events) Call trace: dump_backtrace+0xa4/0x130 show_stack+0x20/0x38 dump_stack_lvl+0x90/0xd0 dump_stack+0x18/0x28 __lock_acquire+0x480/0x1ad8 lock_acquire+0x114/0x310 _raw_spin_lock+0x50/0x70 cpc_write+0xcc/0x370 cppc_set_perf+0xa0/0x3a8 cppc_cpufreq_fast_switch+0x40/0xc0 cpufreq_driver_fast_switch+0x4c/0x218 sugov_update_shared+0x234/0x280 update_load_avg+0x6ec/0x7b8 dequeue_entities+0x108/0x830 dequeue_task_fair+0x58/0x408 __schedule+0x4f0/0x1070 schedule+0x54/0x130 worker_thread+0xc0/0x2e8 kthread+0x130/0x148 ret_from_fork+0x10/0x20 sugov_update_shared() locks a raw_spinlock while cpc_write() locks a spinlock. To have a correct wait-type order, update rmw_lock to a raw spinlock and ensure that interrupts will be disabled on the CPU holding it. [ rjw: Changelog edits ]
Timeline
ID reserved
By Linux
- 19 days later
· 19 days later
Published
- 19 months later
· 19 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 |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| 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 (13 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 94e8c988468dafde1d2bfe0532a60a3117f6394b – < c46d6b02588000c27b7b869388c2c0278bd0d173
- affected f812ca13a0d3e3aa418da36b66ca40df0d6f9e60 – < 23039b4aaf1e82e0feea1060834d4ec34262e453
- affected 8ad28208be7bbe748e90442c45963ddbef0fd1e2 – < 0eb2b767c42fac61ab23c4063eb456baa4c2c262
- affected 20cde05aa8bcd7a5ff36a609d813189b7cdbe692 – < 43b1df48d1e7000a214acd1a81b8012ca8a929c8
- affected 60949b7b805424f21326b450ca4f1806c06d982e – < 1c10941e34c5fdc0357e46a25bd130d9cf40b925
- affected 82cee12ada68dfd438c7faca152dbfe042868743
- affected 6.10.13 – < 6.11
- affected 5.15.168 – < 5.15.171
- affected 6.1.113 – < 6.1.116
- affected 6.6.54 – < 6.6.60
- affected 6.11.2 – < 6.11.7
References
References6
- https://git.kernel.org/stable/c/c46d6b02588000c27b7b869388c2c0278bd0d173 (opens in a new tab)
- https://git.kernel.org/stable/c/23039b4aaf1e82e0feea1060834d4ec34262e453 (opens in a new tab)
- https://git.kernel.org/stable/c/0eb2b767c42fac61ab23c4063eb456baa4c2c262 (opens in a new tab)
- https://git.kernel.org/stable/c/43b1df48d1e7000a214acd1a81b8012ca8a929c8 (opens in a new tab)
- https://git.kernel.org/stable/c/1c10941e34c5fdc0357e46a25bd130d9cf40b925 (opens in a new tab)
- 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-2024-44751 (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-2024-50249)Record last updated .