Description
In the Linux kernel, the following vulnerability has been resolved: drm/exynos: exynos7_drm_decon: add vblank check in IRQ handling If there's support for another console device (such as a TTY serial), the kernel occasionally panics during boot. The panic message and a relevant snippet of the call stack is as follows: Unable to handle kernel NULL pointer dereference at virtual address 000000000000000 Call trace: drm_crtc_handle_vblank+0x10/0x30 (P) decon_irq_handler+0x88/0xb4 [...] Otherwise, the panics don't happen. This indicates that it's some sort of race condition. Add a check to validate if the drm device can handle vblanks before calling drm_crtc_handle_vblank() to avoid this.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
96976c3d9aff4e1387c30f6356ac01fa6f72ef46 to < b4e72c0bf878f02faa00a7dc7c9ffc4ff7c116a7affected96976c3d9aff4e1387c30f6356ac01fa6f72ef46 to < a2130463fc9451005660b0eda7b61d5f746f7d74affected96976c3d9aff4e1387c30f6356ac01fa6f72ef46 to < 87825fbd1e176cd5b896940f3959e7c9a916945daffected96976c3d9aff4e1387c30f6356ac01fa6f72ef46 to < a40a35166f7e4f6dcd4b087d620c8228922dcb0aaffected96976c3d9aff4e1387c30f6356ac01fa6f72ef46 to < 391e5ea5b877230b844c9bd8bbcd91b681b1ce2daffected96976c3d9aff4e1387c30f6356ac01fa6f72ef46 to < e9d9b25f376737b81f06de9c5aa422b488f47184affected96976c3d9aff4e1387c30f6356ac01fa6f72ef46 to < 996740652e620ef8ee1e5c65832cf2ffa498577daffected96976c3d9aff4e1387c30f6356ac01fa6f72ef46 to < b846350aa272de99bf6fecfa6b08e64ebfb13173affected
Linux Linux
Default version status: affected
4.0affected0 to < 4.0unaffected5.4.296 to ≤ 5.4.*unaffected5.10.240 to ≤ 5.10.*unaffected5.15.189 to ≤ 5.15.*unaffected6.1.146 to ≤ 6.1.*unaffected6.6.99 to ≤ 6.6.*unaffected6.12.39 to ≤ 6.12.*unaffected6.15.7 to ≤ 6.15.*unaffected6.16 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/b4e72c0bf878f02faa00a7dc7c9ffc4ff7c116a7 ↗
- https://git.kernel.org/stable/c/a2130463fc9451005660b0eda7b61d5f746f7d74 ↗
- https://git.kernel.org/stable/c/87825fbd1e176cd5b896940f3959e7c9a916945d ↗
- https://git.kernel.org/stable/c/a40a35166f7e4f6dcd4b087d620c8228922dcb0a ↗
- https://git.kernel.org/stable/c/391e5ea5b877230b844c9bd8bbcd91b681b1ce2d ↗
- https://git.kernel.org/stable/c/e9d9b25f376737b81f06de9c5aa422b488f47184 ↗
- https://git.kernel.org/stable/c/996740652e620ef8ee1e5c65832cf2ffa498577d ↗
- https://git.kernel.org/stable/c/b846350aa272de99bf6fecfa6b08e64ebfb13173 ↗
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html ↗
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html ↗