Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: Revert "drm/amdgpu: fix aperture mapping leak" devres teardown is LIFO. The aperture devres node was registered after the DRM device node, so devres_release_all() unmaps the aperture before the DRM device release callback fires amdgpu_device_fini_sw(). IP sw_fini callbacks (e.g. vcn_v4_0_sw_fini) write to fw_shared through a pointer derived from aper_base_kaddr, causing a kernel page fault on probe failure / rollback: BUG: unable to handle page fault ... PMD 0 RIP: vcn_v4_0_sw_fini+0x7b/0x170 [amdgpu] Call Trace: amdgpu_device_fini_sw amdgpu_driver_release_kms devm_drm_dev_init_release devres_release_all This reverts commit d871e99879cb5fd1fa798b006b4888887e63a17a. (cherry picked from commit 336e0cd576817ac64a4b394ca2b3680029f3e37f)
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 67bc3647e418e23dc0d17604bdba634a73de809f before 7380f1bfe9d7ed3a4ca9d99a5c4df840fff9af2a; affected a343d028ad6c174da8dc6af560c51e6d140a6727 before 96d26143882f9cb47dcc1f3dd4e26d047e53ab9b; affected 6405c4e75b3bcf0e72bd7a0ff5f1ed0c475e23aa before a2e326c52c4bcecc033cd3ca2733fdbe30fbf55d; affected f5988b5c300a32ff751724ffd33d5a8d5873e4a7 before 496846a9411136eb9e86ad4f4e62d751bd1e1db5; affected ea772a440d56b285f4d491affac50ecd41f6b402 before b96c529cd2551b78316a4afa3237b2ed96ba03c8 |
| Linux / Linux | affected 6.6.148 before 6.6.152; affected 6.12.101 before 6.12.104; affected 6.18.42 before 6.18.45; affected 7.1.6 before 7.1.9 |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/7380f1bfe9d7ed3a4ca9d99a5c4df840fff9af2a
- https://git.kernel.org/stable/c/96d26143882f9cb47dcc1f3dd4e26d047e53ab9b
- https://git.kernel.org/stable/c/a2e326c52c4bcecc033cd3ca2733fdbe30fbf55d
- https://git.kernel.org/stable/c/496846a9411136eb9e86ad4f4e62d751bd1e1db5
- https://git.kernel.org/stable/c/b96c529cd2551b78316a4afa3237b2ed96ba03c8