Bug 2481984 (CVE-2026-45995) - CVE-2026-45995 kernel: io_uring/zcrx: fix user_struct uaf
Summary: CVE-2026-45995 kernel: io_uring/zcrx: fix user_struct uaf
Keywords:
Status: NEW
Alias: CVE-2026-45995
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
unspecified
unspecified
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-27 15:05 UTC by OSIDB Bzimport
Modified: 2026-05-27 21:39 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
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Description OSIDB Bzimport 2026-05-27 15:05:39 UTC 
In the Linux kernel, the following vulnerability has been resolved:

io_uring/zcrx: fix user_struct uaf

io_free_rbuf_ring() usees a struct user_struct, which
io_zcrx_ifq_free() puts it down before destroying the ring.
Comment 1 Keith Grant 2026-05-27 21:37:44 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026052740-CVE-2026-45995-7e97@gregkh/T
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