CVE-2025-21849

In the Linux kernel, the following vulnerability has been resolved: drm/i915/gt: Use spin_lock_irqsave() in interruptible context spin_lock/unlock() functions used in interrupt contexts could result in a deadlock, as seen in GitLab issue #13399, which occurs when interrupt comes in while holding a lock. Try to remedy the problem by saving irq state before spin lock acquisition. v2: add irqs' state save/restore calls to all locks/unlocks in signal_irq_work() execution (Maciej) v3: use with spin_lock_irqsave() in guc_lrc_desc_unpin() instead of other lock/unlock calls and add Fixes and Cc tags (Tvrtko); change title and commit message (cherry picked from commit c088387ddd6482b40f21ccf23db1125e8fa4af7e)

The following products are affected by CVE-2025-21849 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-21849.

URL	Resource
https://git.kernel.org/stable/c/2bf1f4c129db7a10920655b000f0292f1ee509c2
https://git.kernel.org/stable/c/47ae46ac5407646420e06b78e0dad331e56a4bb4
https://git.kernel.org/stable/c/e49477f7f78598295551d486ecc7f020d796432e
https://lore.kernel.org/linux-cve-announce/2025031212-CVE-2025-21849-c95e@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2025-21849
https://www.cve.org/CVERecord?id=CVE-2025-21849