Bug 2400734 (CVE-2023-53519) - CVE-2023-53519 kernel: media: v4l2-mem2mem: add lock to protect parameter num_rdy
Summary: CVE-2023-53519 kernel: media: v4l2-mem2mem: add lock to protect parameter num...
Keywords:
Status: NEW
Alias: CVE-2023-53519
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-10-01 12:04 UTC by OSIDB Bzimport
Modified: 2025-10-01 22:01 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2025-10-01 12:04:20 UTC 
In the Linux kernel, the following vulnerability has been resolved:

media: v4l2-mem2mem: add lock to protect parameter num_rdy

Getting below error when using KCSAN to check the driver. Adding lock to
protect parameter num_rdy when getting the value with function:
v4l2_m2m_num_src_bufs_ready/v4l2_m2m_num_dst_bufs_ready.

kworker/u16:3: [name:report&]BUG: KCSAN: data-race in v4l2_m2m_buf_queue
kworker/u16:3: [name:report&]

kworker/u16:3: [name:report&]read-write to 0xffffff8105f35b94 of 1 bytes by task 20865 on cpu 7:
kworker/u16:3:  v4l2_m2m_buf_queue+0xd8/0x10c
Comment 1 Jon Moroney 2025-10-01 21:58:52 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025100132-CVE-2023-53519-de9d@gregkh/T
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