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CVE-2026-53293— drm/amdgpu: fix AMDGPU_INFO_READ_MMR_REG

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基金会开源的操作系统Linux所使用的内核。 Linux kernel 6.12版本存在安全漏洞，该漏洞源于AMDGPU_INFO_READ_MMR_REG代码中存在多个问题包括重置信号量和mm_lock之间的顺序错误、在持有重置信号量时分配内存可能导致死锁以及使用down_read_trylock()而非等待重置完成。

AI Predicted 7.8 Difficulty: Hard EPSS 0.12% · P2

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 17

VendorProduct Version RangeStatus
Linux Linux 8361e3f7882876d98ba98cae0d3149450dd80912< 8c4254c8f5836e77ae83e7fc037f02b69f7a0977 affected
9e823f307074c0f82b5f6044943b0086e3079bed< 61957c2e467b39b528a290016367d32a433fa846 affected
9e823f307074c0f82b5f6044943b0086e3079bed< a31c3feb54b15a90232e497ad0e27e8a82052d8d affected
9e823f307074c0f82b5f6044943b0086e3079bed< 5c29d20470d4566d1b68df57097d642d01f8b427 affected
9e823f307074c0f82b5f6044943b0086e3079bed< 0ef196a208385b7d7da79f411c161b04e97283e2 affected
17a98c942cb106ec08564e8f43b5470a4dd5d3f6 affected
9a98563345697bdb1d3410ff428473b2e781f4db affected
6.6.55< 6.6.141 affected
… +9 more rows
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I. Basic Information for CVE-2026-53293

Vulnerability Information
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Vulnerability Title
drm/amdgpu: fix AMDGPU_INFO_READ_MMR_REG
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: fix AMDGPU_INFO_READ_MMR_REG There were multiple issues in that code. First of all the order between the reset semaphore and the mm_lock was wrong (e.g. copy_to_user) was called while holding the lock. Then we allocated memory while holding the reset semaphore which is also a pretty big bug and can deadlock. Then we used down_read_trylock() instead of waiting for the reset to finish. (cherry picked from commit 361b6e6b303d4b691f6c5974d3eaab67ca6dd90e)
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基金会开源的操作系统Linux所使用的内核。 Linux kernel 6.12版本存在安全漏洞，该漏洞源于AMDGPU_INFO_READ_MMR_REG代码中存在多个问题包括重置信号量和mm_lock之间的顺序错误、在持有重置信号量时分配内存可能导致死锁以及使用down_read_trylock()而非等待重置完成。
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 8361e3f7882876d98ba98cae0d3149450dd80912 ~ 8c4254c8f5836e77ae83e7fc037f02b69f7a0977 -
Linux Linux 6.12 -

II. Public POCs for CVE-2026-53293

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III. Intelligence Information for CVE-2026-53293

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Patches & Fixes for CVE-2026-53293 (5)

Same Patch Batch · Linux · 2026-06-26 · 47 CVEs total

CVE-2026-53309 9.8 CRITICAL ocfs2/dlm: fix off-by-one in dlm_match_regions() region comparison
CVE-2026-53281 8.8 HIGH iommu/vt-d: Avoid NULL pointer dereference or refcount corruption
CVE-2026-53322 8.8 HIGH vfio/pci: Clean up DMABUFs before disabling function
CVE-2026-53300 7.8 HIGH net: enetc: fix NTMP DMA use-after-free issue
CVE-2026-53290 7.8 HIGH drm/xe/eustall: Fix drm_dev_put called before stream disable in close
CVE-2026-53284 7.5 HIGH btrfs: only release the dirty pages io tree after successful writes
CVE-2026-53324 net: mana: Use pci_name() for debugfs directory naming
CVE-2026-53306 tty: hvc_iucv: fix off-by-one in number of supported devices
CVE-2026-53319 blk-wbt: remove WARN_ON_ONCE from wbt_init_enable_default()
CVE-2026-53321 io_uring/napi: cap busy_poll_to 10 msec
CVE-2026-53320 nilfs2: reject zero bd_oblocknr in nilfs_ioctl_mark_blocks_dirty()
CVE-2026-53323 net: dsa: remove redundant netdev_lock_ops() from conduit ethtool ops
CVE-2026-53313 drm/amd/display: Avoid NULL dereference in dc_dmub_srv error paths
CVE-2026-53312 iommu/riscv: Remove overflows on the invalidation path
CVE-2026-53311 fuse: fix uninit-value in fuse_dentry_revalidate()
CVE-2026-53310 soc/tegra: cbb: Fix cross-fabric target timeout lookup
CVE-2026-53308 power: supply: max77705: Free allocated workqueue and fix removal order
CVE-2026-53307 pinctrl: pinconf-generic: Fully validate 'pinmux' property
CVE-2026-53305 usb: typec: ps883x: Fix Oops at unbind
CVE-2026-53303 f2fs: protect extension_list reading with sb_lock in f2fs_sbi_show()

Showing top 20 of 47 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-53293

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