{"id":"CVE-2023-53352","summary":"drm/ttm: check null pointer before accessing when swapping","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/ttm: check null pointer before accessing when swapping\n\nAdd a check to avoid null pointer dereference as below:\n\n[   90.002283] general protection fault, probably for non-canonical\naddress 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN NOPTI\n[   90.002292] KASAN: null-ptr-deref in range\n[0x0000000000000000-0x0000000000000007]\n[   90.002346]  ? exc_general_protection+0x159/0x240\n[   90.002352]  ? asm_exc_general_protection+0x26/0x30\n[   90.002357]  ? ttm_bo_evict_swapout_allowable+0x322/0x5e0 [ttm]\n[   90.002365]  ? ttm_bo_evict_swapout_allowable+0x42e/0x5e0 [ttm]\n[   90.002373]  ttm_bo_swapout+0x134/0x7f0 [ttm]\n[   90.002383]  ? __pfx_ttm_bo_swapout+0x10/0x10 [ttm]\n[   90.002391]  ? lock_acquire+0x44d/0x4f0\n[   90.002398]  ? ttm_device_swapout+0xa5/0x260 [ttm]\n[   90.002412]  ? lock_acquired+0x355/0xa00\n[   90.002416]  ? do_raw_spin_trylock+0xb6/0x190\n[   90.002421]  ? __pfx_lock_acquired+0x10/0x10\n[   90.002426]  ? ttm_global_swapout+0x25/0x210 [ttm]\n[   90.002442]  ttm_device_swapout+0x198/0x260 [ttm]\n[   90.002456]  ? __pfx_ttm_device_swapout+0x10/0x10 [ttm]\n[   90.002472]  ttm_global_swapout+0x75/0x210 [ttm]\n[   90.002486]  ttm_tt_populate+0x187/0x3f0 [ttm]\n[   90.002501]  ttm_bo_handle_move_mem+0x437/0x590 [ttm]\n[   90.002517]  ttm_bo_validate+0x275/0x430 [ttm]\n[   90.002530]  ? __pfx_ttm_bo_validate+0x10/0x10 [ttm]\n[   90.002544]  ? kasan_save_stack+0x33/0x60\n[   90.002550]  ? kasan_set_track+0x25/0x30\n[   90.002554]  ? __kasan_kmalloc+0x8f/0xa0\n[   90.002558]  ? amdgpu_gtt_mgr_new+0x81/0x420 [amdgpu]\n[   90.003023]  ? ttm_resource_alloc+0xf6/0x220 [ttm]\n[   90.003038]  amdgpu_bo_pin_restricted+0x2dd/0x8b0 [amdgpu]\n[   90.003210]  ? __x64_sys_ioctl+0x131/0x1a0\n[   90.003210]  ? do_syscall_64+0x60/0x90","modified":"2026-04-11T12:46:45.698574Z","published":"2025-09-17T14:56:42.698Z","related":["SUSE-SU-2025:03600-1","SUSE-SU-2025:03615-1","SUSE-SU-2025:03628-1","SUSE-SU-2025:03634-1","SUSE-SU-2025:20851-1","SUSE-SU-2025:20861-1","SUSE-SU-2025:20870-1","SUSE-SU-2025:20898-1","SUSE-SU-2025:3716-1","SUSE-SU-2025:3751-1","SUSE-SU-2025:3761-1","SUSE-SU-2025:4057-1","SUSE-SU-2025:4132-1","SUSE-SU-2025:4141-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53352.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/1fdd16d89c01336d9a942b5f03673c17d401da87"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2dedcf414bb01b8d966eb445db1d181d92304fb2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/49b3b979e79faef129605018ad82aa0f2258f2f7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8089eb93d6787dbf348863e935698b4610d90321"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d39971d902d067b4dc366981b75b17c8c57ed5d1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53352.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-53352"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"8996b13051f0c211aaaf243dfd270003f1b67431"},{"fixed":"d39971d902d067b4dc366981b75b17c8c57ed5d1"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"da60170558b956c1b45dee1c4423da2425037426"},{"fixed":"8089eb93d6787dbf348863e935698b4610d90321"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"17e188e0feb008bab5f4b083083dff7cdc633ca1"},{"fixed":"1fdd16d89c01336d9a942b5f03673c17d401da87"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"c24d051e6b48015e32f1361cdf67e1784dd14a9f"},{"fixed":"49b3b979e79faef129605018ad82aa0f2258f2f7"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"a2848d08742c8e8494675892c02c0d22acbe3cf8"},{"fixed":"2dedcf414bb01b8d966eb445db1d181d92304fb2"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-53352.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.15.124"},{"fixed":"5.15.126"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.1.43"},{"fixed":"6.1.45"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.4.8"},{"fixed":"6.4.10"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-53352.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}