{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-38598","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-04-16T04:51:24.028Z","datePublished":"2025-08-19T17:03:33.308Z","dateUpdated":"2026-08-05T12:03:19.380Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-05T12:03:19.380Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: fix use-after-free in amdgpu_userq_suspend+0x51a/0x5a0\n\n[  +0.000020] BUG: KASAN: slab-use-after-free in amdgpu_userq_suspend+0x51a/0x5a0 [amdgpu]\n[  +0.000817] Read of size 8 at addr ffff88812eec8c58 by task amd_pci_unplug/1733\n\n[  +0.000027] CPU: 10 UID: 0 PID: 1733 Comm: amd_pci_unplug Tainted: G        W          6.14.0+ #2\n[  +0.000009] Tainted: [W]=WARN\n[  +0.000003] Hardware name: ASUS System Product Name/ROG STRIX B550-F GAMING (WI-FI), BIOS 1401 12/03/2020\n[  +0.000004] Call Trace:\n[  +0.000004]  <TASK>\n[  +0.000003]  dump_stack_lvl+0x76/0xa0\n[  +0.000011]  print_report+0xce/0x600\n[  +0.000009]  ? srso_return_thunk+0x5/0x5f\n[  +0.000006]  ? kasan_complete_mode_report_info+0x76/0x200\n[  +0.000007]  ? kasan_addr_to_slab+0xd/0xb0\n[  +0.000006]  ? amdgpu_userq_suspend+0x51a/0x5a0 [amdgpu]\n[  +0.000707]  kasan_report+0xbe/0x110\n[  +0.000006]  ? amdgpu_userq_suspend+0x51a/0x5a0 [amdgpu]\n[  +0.000541]  __asan_report_load8_noabort+0x14/0x30\n[  +0.000005]  amdgpu_userq_suspend+0x51a/0x5a0 [amdgpu]\n[  +0.000535]  ? stop_cpsch+0x396/0x600 [amdgpu]\n[  +0.000556]  ? stop_cpsch+0x429/0x600 [amdgpu]\n[  +0.000536]  ? __pfx_amdgpu_userq_suspend+0x10/0x10 [amdgpu]\n[  +0.000536]  ? srso_return_thunk+0x5/0x5f\n[  +0.000004]  ? kgd2kfd_suspend+0x132/0x1d0 [amdgpu]\n[  +0.000542]  amdgpu_device_fini_hw+0x581/0xe90 [amdgpu]\n[  +0.000485]  ? down_write+0xbb/0x140\n[  +0.000007]  ? __mutex_unlock_slowpath.constprop.0+0x317/0x360\n[  +0.000005]  ? __pfx_amdgpu_device_fini_hw+0x10/0x10 [amdgpu]\n[  +0.000482]  ? __kasan_check_write+0x14/0x30\n[  +0.000004]  ? srso_return_thunk+0x5/0x5f\n[  +0.000004]  ? up_write+0x55/0xb0\n[  +0.000007]  ? srso_return_thunk+0x5/0x5f\n[  +0.000005]  ? blocking_notifier_chain_unregister+0x6c/0xc0\n[  +0.000008]  amdgpu_driver_unload_kms+0x69/0x90 [amdgpu]\n[  +0.000484]  amdgpu_pci_remove+0x93/0x130 [amdgpu]\n[  +0.000482]  pci_device_remove+0xae/0x1e0\n[  +0.000008]  device_remove+0xc7/0x180\n[  +0.000008]  device_release_driver_internal+0x3d4/0x5a0\n[  +0.000007]  device_release_driver+0x12/0x20\n[  +0.000004]  pci_stop_bus_device+0x104/0x150\n[  +0.000006]  pci_stop_and_remove_bus_device_locked+0x1b/0x40\n[  +0.000005]  remove_store+0xd7/0xf0\n[  +0.000005]  ? __pfx_remove_store+0x10/0x10\n[  +0.000006]  ? __pfx__copy_from_iter+0x10/0x10\n[  +0.000006]  ? __pfx_dev_attr_store+0x10/0x10\n[  +0.000006]  dev_attr_store+0x3f/0x80\n[  +0.000006]  sysfs_kf_write+0x125/0x1d0\n[  +0.000004]  ? srso_return_thunk+0x5/0x5f\n[  +0.000005]  ? __kasan_check_write+0x14/0x30\n[  +0.000005]  kernfs_fop_write_iter+0x2ea/0x490\n[  +0.000005]  ? rw_verify_area+0x70/0x420\n[  +0.000005]  ? __pfx_kernfs_fop_write_iter+0x10/0x10\n[  +0.000006]  vfs_write+0x90d/0xe70\n[  +0.000005]  ? srso_return_thunk+0x5/0x5f\n[  +0.000005]  ? __pfx_vfs_write+0x10/0x10\n[  +0.000004]  ? local_clock+0x15/0x30\n[  +0.000008]  ? srso_return_thunk+0x5/0x5f\n[  +0.000004]  ? __kasan_slab_free+0x5f/0x80\n[  +0.000005]  ? srso_return_thunk+0x5/0x5f\n[  +0.000004]  ? __kasan_check_read+0x11/0x20\n[  +0.000004]  ? srso_return_thunk+0x5/0x5f\n[  +0.000004]  ? fdget_pos+0x1d3/0x500\n[  +0.000007]  ksys_write+0x119/0x220\n[  +0.000005]  ? putname+0x1c/0x30\n[  +0.000006]  ? __pfx_ksys_write+0x10/0x10\n[  +0.000007]  __x64_sys_write+0x72/0xc0\n[  +0.000006]  x64_sys_call+0x18ab/0x26f0\n[  +0.000006]  do_syscall_64+0x7c/0x170\n[  +0.000004]  ? srso_return_thunk+0x5/0x5f\n[  +0.000004]  ? __pfx___x64_sys_openat+0x10/0x10\n[  +0.000006]  ? srso_return_thunk+0x5/0x5f\n[  +0.000004]  ? __kasan_check_read+0x11/0x20\n[  +0.000003]  ? srso_return_thunk+0x5/0x5f\n[  +0.000004]  ? fpregs_assert_state_consistent+0x21/0xb0\n[  +0.000006]  ? srso_return_thunk+0x5/0x5f\n[  +0.000004]  ? syscall_exit_to_user_mode+0x4e/0x240\n[  +0.000005]  ? srso_return_thunk+0x5/0x5f\n[  +0.000004]  ? do_syscall_64+0x88/0x170\n[  +0.000003]  ? srso_return_thunk+0x5/0x5f\n[  +0.000004]  ? irqentry_exit+0x43/0x50\n[  +0.000004]  ? srso_return_thunk+0x5\n---truncated---"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"AV:L - The vulnerable code is reached through the amdgpu DRM character device (`/dev/dri/renderD*`) via ioctls and the file-close path, requiring local system access. There is no network-facing component.\nAC:L - The attacker controls both sides of the race — arming the eviction-fence workers by allocating BOs and inducing TTM eviction, and freeing `amdgpu_fpriv` by closing the render fd — and can retry the open/allocate/close loop indefinitely at no cost. The path is active by default for any amdgpu client and does not depend on the non-default `amdgpu.user_queue` parameter.\nPR:L - Only an unprivileged local account with render-node access is needed; `AMDGPU_USERQ` and `AMDGPU_GEM_CREATE` are `DRM_RENDER_ALLOW`, and logind/Android ACLs grant `/dev/dri/renderD128` to the logged-in user by default. No root or capability check guards the eviction-fence suspend/restore worker path.\nUI:N - The attacking process performs every step itself — open the render node, create buffer objects, trigger eviction, close the fd. No action by another user is required.\nS:U - The corruption is confined to kernel slab memory within the same security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - This is a slab use-after-free on a 4096-byte `struct amdgpu_fpriv` (KASAN reports an 8-byte read of freed memory); an attacker who reclaims the slab controls the contents that are read back, yielding a kernel information-disclosure primitive.\nI:H - The freed object contains `work_struct` function pointers and a `timer_list` that the workqueue and timer subsystems subsequently dereference and call, so heap spraying the reclaimed kmalloc-4k object gives control-flow hijack and thus arbitrary kernel modification.\nA:H - Executing a work item and timer out of freed memory reliably causes a kernel oops or panic, as demonstrated by the KASAN slab-use-after-free report, and the race can be re-triggered repeatedly."}]}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c"],"versions":[{"version":"adba0929736a6a2d2780e8e6e4082e42e5ba025c","lessThan":"96f663ae897b3e6ac17ced1d9b9c2ae9f165ad9a","status":"affected","versionType":"git"},{"version":"adba0929736a6a2d2780e8e6e4082e42e5ba025c","lessThan":"a886d26f2c8f9e3f3c1869ae368d09c75daac553","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c"],"versions":[{"version":"6.16","status":"affected"},{"version":"0","lessThan":"6.16","status":"unaffected","versionType":"semver"},{"version":"6.16.1","lessThanOrEqual":"6.16.*","status":"unaffected","versionType":"semver"},{"version":"6.17","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.16","versionEndExcluding":"6.16.1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.16","versionEndExcluding":"6.17"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/96f663ae897b3e6ac17ced1d9b9c2ae9f165ad9a"},{"url":"https://git.kernel.org/stable/c/a886d26f2c8f9e3f3c1869ae368d09c75daac553"}],"title":"drm/amdgpu: fix use-after-free in amdgpu_userq_suspend+0x51a/0x5a0","x_generator":{"engine":"bippy-1.2.0"}}}}