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CVE-2026-99150— drm/amdgpu: don't drop the runtime PM reference twice in amdgpu_gpr

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.

在 Linux 内核中，以下漏洞已得到修复： drm/amdgpu：修复 amdgpu_gpr 中重复释放运行时电源管理（PM）引用的问题 在 函数中，读取 wave 寄存器后会立即释放其运行时 PM 引用。然而，当将寄存器数据复制到用户空间失败时，代码会跳转到 标签处，导致该引用被第二次释放。在 Navi31 平台上，若尝试将数据读入一个非法缓冲区，可能会窃取其他进程持有的引用（导致 power/runtime_usage 从 1 变为 0），或者引发引用计数下溢： amdgpu 0000:03:00.0: Ru

AI Predicted 5.5 Difficulty: Moderate

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux 9eee152aab56d374edb9ad21b3db05f5cdda2fe6< 652b1f26125fe48aed5f4944698a85b457eef491 affected
9eee152aab56d374edb9ad21b3db05f5cdda2fe6< 253555a9baccefffe1f6e5f2fe54363c7c01ebb9 affected
9eee152aab56d374edb9ad21b3db05f5cdda2fe6< de9f6bcdb44f0e410031002e2f103826ea6b6259 affected
865e2dbadf6856c9219626fbd6154cac44e5fbca affected
5.8.2< 5.9 affected
5.9 affected
< 5.9 unaffected
6.18.59≤ 6.18.* unaffected
… +2 more rows
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I. Basic Information for CVE-2026-99150

Vulnerability Information
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Vulnerability Title
drm/amdgpu: don't drop the runtime PM reference twice in amdgpu_gpr
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: don't drop the runtime PM reference twice in amdgpu_gpr amdgpu_debugfs_gpr_read() drops its runtime PM reference right after reading the wave registers. When copying them to userspace fails, it jumps to the err label, which drops the reference a second time. A read into a bad buffer on Navi31 either steals a reference somebody else holds (power/runtime_usage goes from 1 to 0) or underflows the count: amdgpu 0000:03:00.0: Runtime PM usage count underflow! The registers are already in the kernel buffer at that point, so finish the hardware access first and copy the buffer with a single copy_to_user() instead of the put_user() loop with its own error path. (cherry picked from commit 31035bbd74f7c3e10c163db875b8e67f8b50ee6a)
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

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 9eee152aab56d374edb9ad21b3db05f5cdda2fe6 ~ 652b1f26125fe48aed5f4944698a85b457eef491 -
Linux Linux 5.9 -

II. Public POCs for CVE-2026-99150

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III. Intelligence Information for CVE-2026-99150

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Patches & Fixes for CVE-2026-99150 (3)

Same Patch Batch · Linux · 2026-10-28 · 117 CVEs total

CVE-2026-99143 tracing: Keep the predicate limit separate from program capacity
CVE-2026-99129 selinux: fix BPF token permission checks
CVE-2026-99130 io_uring/cancel: don't spin on local work the task can't run
CVE-2026-99131 xfs: fix capability check in xfs
CVE-2026-99133 net/iucv: fix the recvmsg window update
CVE-2026-99132 xfs: don't hold buffer locks across sync transaction commit in xfs_sync_sb_buf
CVE-2026-99134 mac802154: fix data race and NULL deref on local->assoc_dev
CVE-2026-99135 dm-integrity: fix infinite loop on discard with large tag size
CVE-2026-99137 cifs: don't update i_size in cifs_do_truncate without a cached handle
CVE-2026-99136 dm-crypt: fix a tiny race condition in crypt_dec_pending
CVE-2026-99138 tcp: fix use-after-free in do_tcp_getsockopt(TCP_CC_INFO)
CVE-2026-99140 tracing: Fix hist trigger timestamps for buffered events
CVE-2026-99139 tcp: fix use-after-free in do_tcp_getsockopt(TCP_CONGESTION)
CVE-2026-99141 tracing: Fix crash in print_graph_function_event()
CVE-2026-99142 tracing: Check operator stack capacity before pushing
CVE-2026-99156 scsi: st: Fix use-after-free race between st_remove() and st_open()
CVE-2026-99153 scsi: libiscsi: Validate the ITT reflected in a Reject PDU
CVE-2026-99152 scsi: libiscsi: Validate the task named by a management response
CVE-2026-99154 scsi: libiscsi: Reject a negative task index from parse_pdu_itt
CVE-2026-99151 drm/amd/display: Fix NULL sink dereference in USB4 bandwidth functions

Showing top 20 of 117 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux