Not yet scoredPublished Dec 8, 2025

CVE-2023-53848md/raid5-cache: fix a deadlock in r5l_exit_log()

Updated under an hour ago (Oct 27, 2026, 11:10 AM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: md/raid5-cache: fix a deadlock in r5l_exit_log() Commit b13015af94cf ("md/raid5-cache: Clear conf->log after finishing work") introduce a new problem: // caller hold reconfig_mutex r5l_exit_log flush_work(&log->disable_writeback_work) r5c_disable_writeback_async wait_event /* * conf->log is not NULL, and mddev_trylock() * will fail, wait_event() can never pass. */ conf->log = NULL Fix this problem by setting 'config->log' to NULL before wake_up() as it used to be, so that wait_event() from r5c_disable_writeback_async() can exist. In the meantime, move forward md_unregister_thread() so that null-ptr-deref this commit fixed can still be fixed.

CVSS: Not yet scored
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Deferred
Record last updated: May 11, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from b13015af94cf405f73ff64ce0797269554020c37 before ac9e103f282a7854f3274ef5ff0742fbbe8d7d6b; from b13015af94cf405f73ff64ce0797269554020c37 before 71cf23271f015a57038bdc4669952096f9fe5500; from b13015af94cf405f73ff64ce0797269554020c37 before c406984738215dc20ac2dc63e49d70f20797730e; from b13015af94cf405f73ff64ce0797269554020c37 before a705b11b358dee677aad80630e7608b2d5f56691	CNA record

References

References

https://git.kernel.org/stable/c/ac9e103f282a7854f3274ef5ff0742fbbe8d7d6b
https://git.kernel.org/stable/c/71cf23271f015a57038bdc4669952096f9fe5500
https://git.kernel.org/stable/c/c406984738215dc20ac2dc63e49d70f20797730e
https://git.kernel.org/stable/c/a705b11b358dee677aad80630e7608b2d5f56691

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.