Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: drm/lima: call drm_mm_init() with a valid allocation range lima_vm_create() is currently run before va_start and va_end are set up, meaning they are both 0. lima_vm_create() runs drm_mm_init() with them as arguments for the allocator, and if DRM_DEBUG_MM is enabled the DRM_MM_BUG_ON check in drm_mm_init then fires, as seen here on exynos4412-odroid-u2: [ 1.736297] ------------[ cut here ]------------ [ 1.740370] kernel BUG at drivers/gpu/drm/drm_mm.c:931! [ 1.745574] Internal error: Oops - BUG: 0 [#1] SMP ARM [ 1.750697] Modules linked in: [ 1.753734] CPU: 0 UID: 0 PID: 41 Comm: kworker/u16:1 Not tainted 7.0.10-postmarketos-exynos4 #11 PREEMPT [ 1.763372] Hardware name: Samsung Exynos (Flattened Device Tree) [ 1.769446] Workqueue: events_unbound deferred_probe_work_func [ 1.775261] PC is at drm_mm_init+0x9c/0xa4 [ 1.779339] LR is at lima_vm_create+0x144/0x17c [ ... ] Fix the issue by moving the lima_vm_create() call after va_start and va_end are set up.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected a1d2a6339961efc078208dc3b2f006e9e9a8e119 before af1f276d50c9d7ebcd25770f358ca503a89d96d7; affected a1d2a6339961efc078208dc3b2f006e9e9a8e119 before fd6bc5f1d6b54047b06b82bab25a7e21e4b1c95a; affected a1d2a6339961efc078208dc3b2f006e9e9a8e119 before ad4e908096dff97646f77b04e2e2825225e215f7; affected a1d2a6339961efc078208dc3b2f006e9e9a8e119 before 788917ba77f5d69bd368c1d176ecceda346a2951; affected a1d2a6339961efc078208dc3b2f006e9e9a8e119 before 79a3331ee436c8b1454f897d539606c9b5ebdf9f; affected a1d2a6339961efc078208dc3b2f006e9e9a8e119 before e2a7cee341986cb5b544a8286edc7fb0494c592e; affected a1d2a6339961efc078208dc3b2f006e9e9a8e119 before e0773ad25a34a49aece176721c466cf214e02222; affected a1d2a6339961efc078208dc3b2f006e9e9a8e119 before 3b3bce4a692ac60d9f4a341e6b597dd1fd0a28f9 |
| Linux / Linux | affected 5.2; unaffected 0 before 5.2; unaffected 5.10.270 through 5.10.*; unaffected 5.15.221 through 5.15.*; unaffected 6.1.188 through 6.1.*; unaffected 6.6.157 through 6.6.*; unaffected 6.12.110 through 6.12.*; unaffected 6.18.52 through 6.18.*; unaffected 7.2.6 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/af1f276d50c9d7ebcd25770f358ca503a89d96d7
- https://git.kernel.org/stable/c/fd6bc5f1d6b54047b06b82bab25a7e21e4b1c95a
- https://git.kernel.org/stable/c/ad4e908096dff97646f77b04e2e2825225e215f7
- https://git.kernel.org/stable/c/788917ba77f5d69bd368c1d176ecceda346a2951
- https://git.kernel.org/stable/c/79a3331ee436c8b1454f897d539606c9b5ebdf9f
- https://git.kernel.org/stable/c/e2a7cee341986cb5b544a8286edc7fb0494c592e
- https://git.kernel.org/stable/c/e0773ad25a34a49aece176721c466cf214e02222
- https://git.kernel.org/stable/c/3b3bce4a692ac60d9f4a341e6b597dd1fd0a28f9