Bug 2347279 (CVE-2023-52926) - CVE-2023-52926 kernel: io_uring/rw: split io_read() into a helper
Summary: CVE-2023-52926 kernel: io_uring/rw: split io_read() into a helper
Keywords:
Status: NEW
Alias: CVE-2023-52926
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-02-24 10:01 UTC by OSIDB Bzimport
Modified: 2025-02-25 13:18 UTC (History)
4 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2025-02-24 10:01:17 UTC 
In the Linux kernel, the following vulnerability has been resolved:

IORING_OP_READ did not correctly consume the provided buffer list when
read i/o returned < 0 (except for -EAGAIN and -EIOCBQUEUED return).
This can lead to a potential use-after-free when the completion via
io_rw_done runs at separate context.
Comment 1 Avinash Hanwate 2025-02-24 11:10:12 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022416-CVE-2023-52926-7cb1@gregkh/T
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