Bug 2363688 (CVE-2023-53051) - CVE-2023-53051 kernel: dm crypt: add cond_resched() to dmcrypt_write()
Summary: CVE-2023-53051 kernel: dm crypt: add cond_resched() to dmcrypt_write()
Keywords:
Status: NEW
Alias: CVE-2023-53051
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: 2025-05-02 16:01 UTC by OSIDB Bzimport
Modified: 2025-05-05 04:49 UTC (History)
4 users (show)

Fixed In Version:
Clone Of:
Environment:
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Description OSIDB Bzimport 2025-05-02 16:01:46 UTC 
In the Linux kernel, the following vulnerability has been resolved:

dm crypt: add cond_resched() to dmcrypt_write()

The loop in dmcrypt_write may be running for unbounded amount of time,
thus we need cond_resched() in it.

This commit fixes the following warning:

[ 3391.153255][   C12] watchdog: BUG: soft lockup - CPU#12 stuck for 23s! [dmcrypt_write/2:2897]
...
[ 3391.387210][   C12] Call trace:
[ 3391.390338][   C12]  blk_attempt_bio_merge.part.6+0x38/0x158
[ 3391.395970][   C12]  blk_attempt_plug_merge+0xc0/0x1b0
[ 3391.401085][   C12]  blk_mq_submit_bio+0x398/0x550
[ 3391.405856][   C12]  submit_bio_noacct+0x308/0x380
[ 3391.410630][   C12]  dmcrypt_write+0x1e4/0x208 [dm_crypt]
[ 3391.416005][   C12]  kthread+0x130/0x138
[ 3391.419911][   C12]  ret_from_fork+0x10/0x18
Comment 1 Avinash Hanwate 2025-05-05 04:47:35 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025050206-CVE-2023-53051-dff1@gregkh/T
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