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CVE-2026-46311— drm/amdgpu/userq: fix access to stale wptr mapping

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drm amdgpu userq中wptr映射访问不当，可能导致安全漏洞。

CVSS 7.8 · High EPSS 0.12% · P2

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux 5fb2f7fc21a3668e5794cc0d153641b9719713e1< 2da62dbb4169e758c0b1a9378b39a373bf4fb111 affected
5fb2f7fc21a3668e5794cc0d153641b9719713e1< 336a9186f3a4b65bbd865d93936605ac8a1a3991 affected
5fb2f7fc21a3668e5794cc0d153641b9719713e1< 6da7b1242da4455b11c24ce667d1cab1a348c8ea affected
6.16 affected
< 6.16 unaffected
6.18.57≤ 6.18.* unaffected
7.0.9≤ 7.0.* unaffected
7.1≤ * unaffected
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I. Basic Information for CVE-2026-46311

Vulnerability Information
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Vulnerability Title
drm/amdgpu/userq: fix access to stale wptr mapping
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/userq: fix access to stale wptr mapping Use drm_exec to take both locks i.e vm root bo and wptr_obj bo to access the mapping data properly. This fixes the security issue of unmap the wptr_obj while a queue creation is in progress and passing other bo at same address. (cherry picked from commit 1fc6c8ab45dbee096469c08c13f6099d57a52d6c)
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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drm amdgpu userq中wptr映射访问不当，可能导致安全漏洞。
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 5fb2f7fc21a3668e5794cc0d153641b9719713e1 ~ 2da62dbb4169e758c0b1a9378b39a373bf4fb111 -
Linux Linux 6.16 -

II. Public POCs for CVE-2026-46311

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III. Intelligence Information for CVE-2026-46311

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Patches & Fixes for CVE-2026-46311 (2)

Other References for CVE-2026-46311 (1)

Same Patch Batch · Linux · 2026-06-08 · 41 CVEs total

CVE-2026-46289 9.8 CRITICAL lib/scatterlist: fix length calculations in extract_kvec_to_sg
CVE-2026-46288 8.4 HIGH of: unittest: fix use-after-free in of_unittest_changeset()
CVE-2026-46307 8.3 HIGH wifi: ath5k: do not access array OOB
CVE-2026-46303 8.2 HIGH isofs: validate Rock Ridge CE continuation extent against volume size
CVE-2026-46274 7.8 HIGH io-wq: check that the predecessor is hashed in io_wq_remove_pending()
CVE-2026-46280 7.8 HIGH lib: test_hmm: evict device pages on file close to avoid use-after-free
CVE-2026-46277 7.8 HIGH mm/zone_device: do not touch device folio after calling ->folio_free()
CVE-2026-46275 7.8 HIGH Bluetooth: hci_uart: fix UAFs and race conditions in close and init paths
CVE-2026-46306 7.5 HIGH flow_dissector: do not dissect PPPoE PFC frames
CVE-2026-46304 7.5 HIGH nvmet: avoid recursive nvmet-wq flush in nvmet_ctrl_free
CVE-2026-46299 7.0 HIGH hfsplus: fix held lock freed on hfsplus_fill_super()
CVE-2026-46296 spi: s3c64xx: fix NULL-deref on driver unbind
CVE-2026-46312 media: videobuf2: Set vma_flags in vb2_dma_sg_mmap
CVE-2026-46298 pseries/papr-hvpipe: Fix race with interrupt handler
CVE-2026-46301 spi: topcliff-pch: fix use-after-free on unbind
CVE-2026-46302 selinux: allow multiple opens of /sys/fs/selinux/policy
CVE-2026-46314 drm/v3d: Reject empty multisync extension to prevent infinite loop
CVE-2025-71315 drm/vkms: Convert to DRM's vblank timer
CVE-2026-46305 staging: rtl8723bs: os_dep: avoid NULL pointer dereference in rtw_cbuf_alloc
CVE-2026-46308 pmdomain: mediatek: fix use-after-free in scpsys_get_bus_protection_legacy()

Showing top 20 of 41 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-46311

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