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CVE-2025-22093— drm/amd/display: avoid NPD when ASIC does not support DMUB

Quick assessment

Affected

Linux Linux

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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AMD显示驱动在ASIC不支持DMUB时存在空指针解引用。

AI Predicted 6.5 Difficulty: Moderate EPSS 0.20% · P10 Updated May 24, 2026

Possible ATT&CK Techniques 2 AI

T1059 · Command and Scripting Interpreter T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 17

Vendor	Product	Version Range	Status
Linux	Linux	`b7d2461858ac75c9d6bc4ab8af1a738d0814b716< d953e2cd59ab466569c6f9da460e01caf1c83559`	affected
		`758abba3dd413dc5de2016f8588403294263a30a< b3a93a2407ad23c8d5bacabaf7cecbb4c6cdd461`	affected
		`4b46fc30b37e457d25cf3908c0c4dc3fbedd2044< 3453bcaf2ca92659346bf8504c2b52b3993fbd79`	affected
		`b5c764d6ed556c4e81fbe3fd976da77ec450c08e< 5e4b1e04740cdb28de189285007366d99a92f1ce`	affected
		`b5c764d6ed556c4e81fbe3fd976da77ec450c08e< 35ad39afd007eddf34b3307bebb715c26891cc96`	affected
		`b5c764d6ed556c4e81fbe3fd976da77ec450c08e< 42d9d7bed270247f134190ba0cb05bbd072f58c2`	affected
		`6.1.128< 6.1.134`	affected
		`6.6.75< 6.6.87`	affected
… +9 more rows

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I. Basic Information for CVE-2025-22093

Vulnerability Information

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Vulnerability Title

drm/amd/display: avoid NPD when ASIC does not support DMUB

Source: CVE Program / CVE List V5

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: avoid NPD when ASIC does not support DMUB ctx->dmub_srv will de NULL if the ASIC does not support DMUB, which is tested in dm_dmub_sw_init. However, it will be dereferenced in dmub_hw_lock_mgr_cmd if should_use_dmub_lock returns true. This has been the case since dmub support has been added for PSR1. Fix this by checking for dmub_srv in should_use_dmub_lock. [ 37.440832] BUG: kernel NULL pointer dereference, address: 0000000000000058 [ 37.447808] #PF: supervisor read access in kernel mode [ 37.452959] #PF: error_code(0x0000) - not-present page [ 37.458112] PGD 0 P4D 0 [ 37.460662] Oops: Oops: 0000 [#1] PREEMPT SMP NOPTI [ 37.465553] CPU: 2 UID: 1000 PID: 1745 Comm: DrmThread Not tainted 6.14.0-rc1-00003-gd62e938120f0 #23 99720e1cb1e0fc4773b8513150932a07de3c6e88 [ 37.478324] Hardware name: Google Morphius/Morphius, BIOS Google_Morphius.13434.858.0 10/26/2023 [ 37.487103] RIP: 0010:dmub_hw_lock_mgr_cmd+0x77/0xb0 [ 37.492074] Code: 44 24 0e 00 00 00 00 48 c7 04 24 45 00 00 0c 40 88 74 24 0d 0f b6 02 88 44 24 0c 8b 01 89 44 24 08 85 f6 75 05 c6 44 24 0e 01 <48> 8b 7f 58 48 89 e6 ba 01 00 00 00 e8 08 3c 2a 00 65 48 8b 04 5 [ 37.510822] RSP: 0018:ffff969442853300 EFLAGS: 00010202 [ 37.516052] RAX: 0000000000000000 RBX: ffff92db03000000 RCX: ffff969442853358 [ 37.523185] RDX: ffff969442853368 RSI: 0000000000000001 RDI: 0000000000000000 [ 37.530322] RBP: 0000000000000001 R08: 00000000000004a7 R09: 00000000000004a5 [ 37.537453] R10: 0000000000000476 R11: 0000000000000062 R12: ffff92db0ade8000 [ 37.544589] R13: ffff92da01180ae0 R14: ffff92da011802a8 R15: ffff92db03000000 [ 37.551725] FS: 0000784a9cdfc6c0(0000) GS:ffff92db2af00000(0000) knlGS:0000000000000000 [ 37.559814] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 37.565562] CR2: 0000000000000058 CR3: 0000000112b1c000 CR4: 00000000003506f0 [ 37.572697] Call Trace: [ 37.575152] <TASK> [ 37.577258] ? __die_body+0x66/0xb0 [ 37.580756] ? page_fault_oops+0x3e7/0x4a0 [ 37.584861] ? exc_page_fault+0x3e/0xe0 [ 37.588706] ? exc_page_fault+0x5c/0xe0 [ 37.592550] ? asm_exc_page_fault+0x22/0x30 [ 37.596742] ? dmub_hw_lock_mgr_cmd+0x77/0xb0 [ 37.601107] dcn10_cursor_lock+0x1e1/0x240 [ 37.605211] program_cursor_attributes+0x81/0x190 [ 37.609923] commit_planes_for_stream+0x998/0x1ef0 [ 37.614722] update_planes_and_stream_v2+0x41e/0x5c0 [ 37.619703] dc_update_planes_and_stream+0x78/0x140 [ 37.624588] amdgpu_dm_atomic_commit_tail+0x4362/0x49f0 [ 37.629832] ? srso_return_thunk+0x5/0x5f [ 37.633847] ? mark_held_locks+0x6d/0xd0 [ 37.637774] ? _raw_spin_unlock_irq+0x24/0x50 [ 37.642135] ? srso_return_thunk+0x5/0x5f [ 37.646148] ? lockdep_hardirqs_on+0x95/0x150 [ 37.650510] ? srso_return_thunk+0x5/0x5f [ 37.654522] ? _raw_spin_unlock_irq+0x2f/0x50 [ 37.658883] ? srso_return_thunk+0x5/0x5f [ 37.662897] ? wait_for_common+0x186/0x1c0 [ 37.666998] ? srso_return_thunk+0x5/0x5f [ 37.671009] ? drm_crtc_next_vblank_start+0xc3/0x170 [ 37.675983] commit_tail+0xf5/0x1c0 [ 37.679478] drm_atomic_helper_commit+0x2a2/0x2b0 [ 37.684186] drm_atomic_commit+0xd6/0x100 [ 37.688199] ? __cfi___drm_printfn_info+0x10/0x10 [ 37.692911] drm_atomic_helper_update_plane+0xe5/0x130 [ 37.698054] drm_mode_cursor_common+0x501/0x670 [ 37.702600] ? __cfi_drm_mode_cursor_ioctl+0x10/0x10 [ 37.707572] drm_mode_cursor_ioctl+0x48/0x70 [ 37.711851] drm_ioctl_kernel+0xf2/0x150 [ 37.715781] drm_ioctl+0x363/0x590 [ 37.719189] ? __cfi_drm_mode_cursor_ioctl+0x10/0x10 [ 37.724165] amdgpu_drm_ioctl+0x41/0x80 [ 37.728013] __se_sys_ioctl+0x7f/0xd0 [ 37.731685] do_syscall_64+0x87/0x100 [ 37.735355] ? vma_end_read+0x12/0xe0 [ 37.739024] ? srso_return_thunk+0x5/0x5f [ 37.743041] ? find_held_lock+0x47/0xf0 [ 37.746884] ? vma_end_read+0x12/0xe0 [ 37.750552] ? srso_return_thunk+0x5/0 ---truncated---

Source: CVE Program / CVE List V5

CVSS Information

N/A

Source: CVE Program / CVE List V5

Vulnerability Type

N/A

Source: CVE Program / CVE List V5

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AMD显示驱动在ASIC不支持DMUB时存在空指针解引用。

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

Vendor	Product	Affected Versions	CPE	Subscribe
Linux	Linux	b7d2461858ac75c9d6bc4ab8af1a738d0814b716 ~ d953e2cd59ab466569c6f9da460e01caf1c83559	-
Linux	Linux	6.13	-

II. Public POCs for CVE-2025-22093

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2025-22093

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Other References for CVE-2025-22093 (6)

https://www.cve.org/CVERecord?id=CVE-2025-22093

Same Patch Batch · Linux · 2025-04-16 · 127 CVEs total

CVE-2025-22021	10.0 CRITICAL	netfilter: socket: Lookup orig tuple for IPv6 SNAT
CVE-2025-22110	9.8 CRITICAL	netfilter: nfnetlink_queue: Initialize ctx to avoid memory allocation error
CVE-2025-22077	9.8 CRITICAL	Revert "smb: client: fix TCP timers deadlock after rmmod"
CVE-2025-22088	9.8 CRITICAL	RDMA/erdma: Prevent use-after-free in erdma_accept_newconn()
CVE-2025-22074	8.8 HIGH	ksmbd: fix r_count dec/increment mismatch
CVE-2025-23133	8.8 HIGH	wifi: ath11k: update channel list in reg notifier instead reg worker
CVE-2025-22118	8.8 HIGH	ice: validate queue quanta parameters to prevent OOB access
CVE-2025-22086	8.8 HIGH	RDMA/mlx5: Fix mlx5_poll_one() cur_qp update flow
CVE-2025-22040	8.8 HIGH	ksmbd: fix session use-after-free in multichannel connection
CVE-2025-22041	8.8 HIGH	ksmbd: fix use-after-free in ksmbd_sessions_deregister()
CVE-2025-22039	8.8 HIGH	ksmbd: fix overflow in dacloffset bounds check
CVE-2024-58096	8.8 HIGH	wifi: ath11k: add srng->lock for ath11k_hal_srng_* in monitor mode
CVE-2025-22117	8.7 HIGH	ice: fix using untrusted value of pkt_len in ice_vc_fdir_parse_raw()
CVE-2025-22108	8.6 HIGH	bnxt_en: Mask the bd_cnt field in the TX BD properly
CVE-2025-22121	8.4 HIGH	ext4: fix out-of-bound read in ext4_xattr_inode_dec_ref_all()
CVE-2025-22080	8.4 HIGH	fs/ntfs3: Prevent integer overflow in hdr_first_de()
CVE-2025-22038	8.3 HIGH	ksmbd: validate zero num_subauth before sub_auth is accessed
CVE-2025-22043	8.1 HIGH	ksmbd: add bounds check for durable handle context
CVE-2025-22042	8.1 HIGH	ksmbd: add bounds check for create lease context
CVE-2025-22049	7.8 HIGH	LoongArch: Increase ARCH_DMA_MINALIGN up to 16

Showing top 20 of 127 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux

Same vendor: Linux

V. Comments for CVE-2025-22093

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Goal Reached Thanks to every supporter — we hit 100%!

CVE-2025-22093— drm/amd/display: avoid NPD when ASIC does not support DMUB

Quick assessment

Possible ATT&CK Techniques 2 AI

Affected Version Matrix 17

I. Basic Information for CVE-2025-22093

Vulnerability Information

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Affected Products

II. Public POCs for CVE-2025-22093

III. Intelligence Information for CVE-2025-22093

Other References for CVE-2025-22093 (6)

Same Patch Batch · Linux · 2025-04-16 · 127 CVEs total

IV. Related Vulnerabilities

V. Comments for CVE-2025-22093

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