{"id":"DEBIAN-CVE-2023-53352","details":"In the Linux kernel, the following vulnerability has been resolved:  drm/ttm: check null pointer before accessing when swapping  Add a check to avoid null pointer dereference as below:  [   90.002283] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN NOPTI [   90.002292] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [   90.002346]  ? exc_general_protection+0x159/0x240 [   90.002352]  ? asm_exc_general_protection+0x26/0x30 [   90.002357]  ? ttm_bo_evict_swapout_allowable+0x322/0x5e0 [ttm] [   90.002365]  ? ttm_bo_evict_swapout_allowable+0x42e/0x5e0 [ttm] [   90.002373]  ttm_bo_swapout+0x134/0x7f0 [ttm] [   90.002383]  ? __pfx_ttm_bo_swapout+0x10/0x10 [ttm] [   90.002391]  ? lock_acquire+0x44d/0x4f0 [   90.002398]  ? ttm_device_swapout+0xa5/0x260 [ttm] [   90.002412]  ? lock_acquired+0x355/0xa00 [   90.002416]  ? do_raw_spin_trylock+0xb6/0x190 [   90.002421]  ? __pfx_lock_acquired+0x10/0x10 [   90.002426]  ? ttm_global_swapout+0x25/0x210 [ttm] [   90.002442]  ttm_device_swapout+0x198/0x260 [ttm] [   90.002456]  ? __pfx_ttm_device_swapout+0x10/0x10 [ttm] [   90.002472]  ttm_global_swapout+0x75/0x210 [ttm] [   90.002486]  ttm_tt_populate+0x187/0x3f0 [ttm] [   90.002501]  ttm_bo_handle_move_mem+0x437/0x590 [ttm] [   90.002517]  ttm_bo_validate+0x275/0x430 [ttm] [   90.002530]  ? __pfx_ttm_bo_validate+0x10/0x10 [ttm] [   90.002544]  ? kasan_save_stack+0x33/0x60 [   90.002550]  ? kasan_set_track+0x25/0x30 [   90.002554]  ? __kasan_kmalloc+0x8f/0xa0 [   90.002558]  ? amdgpu_gtt_mgr_new+0x81/0x420 [amdgpu] [   90.003023]  ? ttm_resource_alloc+0xf6/0x220 [ttm] [   90.003038]  amdgpu_bo_pin_restricted+0x2dd/0x8b0 [amdgpu] [   90.003210]  ? __x64_sys_ioctl+0x131/0x1a0 [   90.003210]  ? do_syscall_64+0x60/0x90","modified":"2026-09-15T09:02:51.145103511Z","published":"2025-09-17T15:15:39.173Z","upstream":["CVE-2023-53352"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2023-53352"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.52-1"}]}],"versions":["6.1.27-1","6.1.37-1","6.1.38-1","6.1.38-2","6.1.38-2~bpo11+1","6.1.38-3","6.1.38-4","6.1.38-4~bpo11+1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-53352.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.4.11-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-53352.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.4.11-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-53352.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}