Description
In the Linux kernel, the following vulnerability has been resolved:
usb: typec: displayport: Fix potential deadlock
The deadlock can occur due to a recursive lock acquisition of `cros_typec_altmode_data::mutex`. The call chain is as follows: 1. cros_typec_altmode_work() acquires the mutex 2. typec_altmode_vdm() -> dp_altmode_vdm() -> 3. typec_altmode_exit() -> cros_typec_altmode_exit() 4. cros_typec_altmode_exit() attempts to acquire the mutex again
To prevent this, defer the `typec_altmode_exit()` call by scheduling it rather than calling it directly from within the mutex-protected context.
Metrics
CVSS 3.1 5.5/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= e0359c66c1beccbe90119a63391678eabda38007, < 749d9076735fb497aae60fbea9fff563f9ea3254; >= e3fb6c2c3939b4aad203cacdd613a62ce1fd032c, < eb08fca56f1f39e4038cb9bac9864464b13b00aa; >= 56846793f105cf2b39ecbde4f3ae86342091f6fc, < 7be0d1ea71f52595499da39cea484a895e8ed042; >= 8e8a69b1f8c59f0505f8a1c0fb77191f27b75011, < 76cf1f33e7319fe74c94ac92f9814094ee8cc84b; >= 8851e40587013db00b71d4aeaae30f5fd59b0eec, < 63cff9f57e86b2dc25d7487ca0118df89a665296; >= 10cc2cfd3e5d0e0ec7590c4bee8bcea10e5492c4, < c782f98eef14197affa8a7b91e6981420f109ea9; >= 8f6a4fa7b663468bb304cb885b93326e025ae005, < 80c25d7916a44715338d4f8924c8e52af50d0b9f; >= b4b38ffb38c91afd4dc387608db26f6fc34ed40b, < 099cf1fbb8afc3771f408109f62bdec66f85160e |
| Linux | Linux | >= 6.1.143, < 6.1.144; >= 6.6.96, < 6.6.97; >= 6.12.36, < 6.12.37; >= 6.15.5, < 6.15.6 |
References
- https://git.kernel.org/stable/c/099cf1fbb8afc3771f408109f62bdec66f85160ePatch
- https://git.kernel.org/stable/c/63cff9f57e86b2dc25d7487ca0118df89a665296Patch
- https://git.kernel.org/stable/c/749d9076735fb497aae60fbea9fff563f9ea3254Patch
- https://git.kernel.org/stable/c/76cf1f33e7319fe74c94ac92f9814094ee8cc84bPatch
- https://git.kernel.org/stable/c/7be0d1ea71f52595499da39cea484a895e8ed042Patch
- https://git.kernel.org/stable/c/80c25d7916a44715338d4f8924c8e52af50d0b9fPatch
- https://git.kernel.org/stable/c/c782f98eef14197affa8a7b91e6981420f109ea9Patch
- https://git.kernel.org/stable/c/eb08fca56f1f39e4038cb9bac9864464b13b00aaPatch
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.htmlThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlThird Party Advisory
Timeline
- Published
- Jul 25, 2025
- Last modified
- Jun 17, 2026
- NVD status
- Analyzed