{"id":"CVE-2021-47535","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/msm/a6xx: Allocate enough space for GMU registers\n\nIn commit 142639a52a01 (\"drm/msm/a6xx: fix crashstate capture for\nA650\") we changed a6xx_get_gmu_registers() to read 3 sets of\nregisters. Unfortunately, we didn't change the memory allocation for\nthe array. That leads to a KASAN warning (this was on the chromeos-5.4\nkernel, which has the problematic commit backported to it):\n\n  BUG: KASAN: slab-out-of-bounds in _a6xx_get_gmu_registers+0x144/0x430\n  Write of size 8 at addr ffffff80c89432b0 by task A618-worker/209\n  CPU: 5 PID: 209 Comm: A618-worker Tainted: G        W         5.4.156-lockdep #22\n  Hardware name: Google Lazor Limozeen without Touchscreen (rev5 - rev8) (DT)\n  Call trace:\n   dump_backtrace+0x0/0x248\n   show_stack+0x20/0x2c\n   dump_stack+0x128/0x1ec\n   print_address_description+0x88/0x4a0\n   __kasan_report+0xfc/0x120\n   kasan_report+0x10/0x18\n   __asan_report_store8_noabort+0x1c/0x24\n   _a6xx_get_gmu_registers+0x144/0x430\n   a6xx_gpu_state_get+0x330/0x25d4\n   msm_gpu_crashstate_capture+0xa0/0x84c\n   recover_worker+0x328/0x838\n   kthread_worker_fn+0x32c/0x574\n   kthread+0x2dc/0x39c\n   ret_from_fork+0x10/0x18\n\n  Allocated by task 209:\n   __kasan_kmalloc+0xfc/0x1c4\n   kasan_kmalloc+0xc/0x14\n   kmem_cache_alloc_trace+0x1f0/0x2a0\n   a6xx_gpu_state_get+0x164/0x25d4\n   msm_gpu_crashstate_capture+0xa0/0x84c\n   recover_worker+0x328/0x838\n   kthread_worker_fn+0x32c/0x574\n   kthread+0x2dc/0x39c\n   ret_from_fork+0x10/0x18","modified":"2026-03-14T14:51:56.634789Z","published":"2024-05-24T15:15:17.120Z","related":["SUSE-SU-2024:2008-1","SUSE-SU-2024:2010-1","SUSE-SU-2024:2011-1","SUSE-SU-2024:2019-1","SUSE-SU-2024:2185-1","SUSE-SU-2024:2189-1","SUSE-SU-2024:2190-1"],"references":[{"type":"FIX","url":"https://git.kernel.org/stable/c/83e54fcf0b14ca2d869dd37abe1bb6542805f538"},{"type":"FIX","url":"https://git.kernel.org/stable/c/b4d25abf9720b69a03465b09d0d62d1998ed6708"},{"type":"FIX","url":"https://git.kernel.org/stable/c/d646856a600e8635ba498f20b194219b158626e8"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47535.json","unresolved_ranges":[{"events":[{"introduced":"5.9"},{"fixed":"5.10.84"}]},{"events":[{"introduced":"5.11"},{"fixed":"5.15.7"}]},{"events":[{"introduced":"0"},{"last_affected":"5.16-rc1"}]},{"events":[{"introduced":"0"},{"last_affected":"5.16-rc2"}]},{"events":[{"introduced":"0"},{"last_affected":"5.16-rc3"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}