CVE-2025-68286— drm/amd/display: Check NULL before accessing
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I. Basic Information for CVE-2025-68286
Vulnerability Information
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Vulnerability Title
drm/amd/display: Check NULL before accessing
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Check NULL before accessing [WHAT] IGT kms_cursor_legacy's long-nonblocking-modeset-vs-cursor-atomic fails with NULL pointer dereference. This can be reproduced with both an eDP panel and a DP monitors connected. BUG: kernel NULL pointer dereference, address: 0000000000000000 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: Oops: 0000 [#1] SMP NOPTI CPU: 13 UID: 0 PID: 2960 Comm: kms_cursor_lega Not tainted 6.16.0-99-custom #8 PREEMPT(voluntary) Hardware name: AMD ........ RIP: 0010:dc_stream_get_scanoutpos+0x34/0x130 [amdgpu] Code: 57 4d 89 c7 41 56 49 89 ce 41 55 49 89 d5 41 54 49 89 fc 53 48 83 ec 18 48 8b 87 a0 64 00 00 48 89 75 d0 48 c7 c6 e0 41 30 c2 <48> 8b 38 48 8b 9f 68 06 00 00 e8 8d d7 fd ff 31 c0 48 81 c3 e0 02 RSP: 0018:ffffd0f3c2bd7608 EFLAGS: 00010292 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffd0f3c2bd7668 RDX: ffffd0f3c2bd7664 RSI: ffffffffc23041e0 RDI: ffff8b32494b8000 RBP: ffffd0f3c2bd7648 R08: ffffd0f3c2bd766c R09: ffffd0f3c2bd7760 R10: ffffd0f3c2bd7820 R11: 0000000000000000 R12: ffff8b32494b8000 R13: ffffd0f3c2bd7664 R14: ffffd0f3c2bd7668 R15: ffffd0f3c2bd766c FS: 000071f631b68700(0000) GS:ffff8b399f114000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000001b8105000 CR4: 0000000000f50ef0 PKRU: 55555554 Call Trace: <TASK> dm_crtc_get_scanoutpos+0xd7/0x180 [amdgpu] amdgpu_display_get_crtc_scanoutpos+0x86/0x1c0 [amdgpu] ? __pfx_amdgpu_crtc_get_scanout_position+0x10/0x10[amdgpu] amdgpu_crtc_get_scanout_position+0x27/0x50 [amdgpu] drm_crtc_vblank_helper_get_vblank_timestamp_internal+0xf7/0x400 drm_crtc_vblank_helper_get_vblank_timestamp+0x1c/0x30 drm_crtc_get_last_vbltimestamp+0x55/0x90 drm_crtc_next_vblank_start+0x45/0xa0 drm_atomic_helper_wait_for_fences+0x81/0x1f0 ... (cherry picked from commit 621e55f1919640acab25383362b96e65f2baea3c)
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于dc_stream_get_scanoutpos缺少空指针检查，可能导致崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2025-68286
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Same Patch Batch · Linux · 2025-12-16 · 157 CVEs total
| CVE-2025-68263 | 9.8 CRITICAL | ksmbd: ipc: fix use-after-free in ipc_msg_send_request |
| CVE-2025-68259 | KVM: SVM: Don't skip unrelated instruction if INT3/INTO is replaced | |
| CVE-2025-68250 | hung_task: fix warnings caused by unaligned lock pointers | |
| CVE-2025-68251 | erofs: avoid infinite loops due to corrupted subpage compact indexes | |
| CVE-2025-68252 | misc: fastrpc: Fix dma_buf object leak in fastrpc_map_lookup | |
| CVE-2025-68253 | mm: don't spin in add_stack_record when gfp flags don't allow | |
| CVE-2025-68254 | staging: rtl8723bs: fix out-of-bounds read in OnBeacon ESR IE parsing | |
| CVE-2025-68255 | staging: rtl8723bs: fix stack buffer overflow in OnAssocReq IE parsing | |
| CVE-2025-68256 | staging: rtl8723bs: fix out-of-bounds read in rtw_get_ie() parser | |
| CVE-2025-68257 | comedi: check device's attached status in compat ioctls | |
| CVE-2025-68258 | comedi: multiq3: sanitize config options in multiq3_attach() | |
| CVE-2025-68264 | ext4: refresh inline data size before write operations | |
| CVE-2025-68282 | usb: gadget: udc: fix use-after-free in usb_gadget_state_work | |
| CVE-2025-68281 | ASoC: SDCA: bug fix while parsing mipi-sdca-control-cn-list | |
| CVE-2025-68266 | bfs: Reconstruct file type when loading from disk | |
| CVE-2025-68265 | nvme: fix admin request_queue lifetime | |
| CVE-2025-68261 | ext4: add i_data_sem protection in ext4_destroy_inline_data_nolock() | |
| CVE-2025-68260 | rust_binder: fix race condition on death_list | |
| CVE-2025-68249 | most: usb: hdm_probe: Fix calling put_device() before device initialization | |
| CVE-2025-68262 | crypto: zstd - fix double-free in per-CPU stream cleanup |
Showing top 20 of 157 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
Same vendor: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
V. Comments for CVE-2025-68286
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