CVE ID : CVE-2026-23034<\/p>\n
Published : Jan. 31, 2026, 12:16 p.m. | 57\u00a0minutes ago<\/p>\n
Description : In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
drm\/amdgpu\/userq: Fix fence reference leak on queue teardown v2<\/p>\n
The user mode queue keeps a pointer to the most recent fence in
\nuserq->last_fence. This pointer holds an extra dma_fence reference.<\/p>\n
When the queue is destroyed, we free the fence driver and its xarray,
\nbut we forgot to drop the last_fence reference.<\/p>\n
Because of the missing dma_fence_put(), the last fence object can stay
\nalive when the driver unloads. This leaves an allocated object in the
\namdgpu_userq_fence slab cache and triggers<\/p>\n
This is visible during driver unload as:<\/p>\n
BUG amdgpu_userq_fence: Objects remaining on __kmem_cache_shutdown()
\n kmem_cache_destroy amdgpu_userq_fence: Slab cache still has objects
\n Call Trace:
\n kmem_cache_destroy
\n amdgpu_userq_fence_slab_fini
\n amdgpu_exit
\n __do_sys_delete_module<\/p>\n
Fix this by putting userq->last_fence and clearing the pointer during
\namdgpu_userq_fence_driver_free().<\/p>\n
This makes sure the fence reference is released and the slab cache is
\nempty when the module exits.<\/p>\n
v2: Update to only release userq->last_fence with dma_fence_put()
\n (Christian)<\/p>\n
(cherry picked from commit 8e051e38a8d45caf6a866d4ff842105b577953bb)<\/p>\n
Severity: 0.0 | NA<\/p>\n
Visit the link for more details, such as CVSS details, affected products, timeline, and more…\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"
CVE ID : CVE-2026-23034 Published : Jan. 31, 2026, 12:16 p.m. | 57\u00a0minutes ago Description : In the Linux kernel, the following vulnerability has been resolved: drm\/amdgpu\/userq: Fix fence reference leak on queue teardown v2 The user mode queue keeps a pointer to the most recent fence in userq->last_fence. This pointer holds an extra dma_fence …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-76057","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/76057","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/comments?post=76057"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/76057\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=76057"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=76057"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=76057"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}