CVE-2026-72439
In the Linux kernel, the following vulnerability has been resolved: md/raid10: fix writes_pending leak on write request failures raid10_make_request() acquires a writes_pending reference with md_write_start() before dispatching write requests. Several failure paths in raid10_write_request() complete the bio and return without reaching the normal write completion path, causing the corresponding md_write_end() to be skipped. Make raid10_write_request() return a status indicating whether the write request was successfully queued. This allows raid10_make_request() to release the writes_pending reference with md_write_end() when a write request fails.
Affected versions
Linux kernel versions
5.15.111,
5.17
and later are affected. Fixed in
7.1.5,
7.2
and their respective stable series.
References
2 totalFrequently asked questions
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What is CVE-2026-72439?
CVE-2026-72439 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.15.111 onward and has been patched in 7.1.5 and 7.2. CVE-2026-72439 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-72439?
Yes. CVE-2026-72439 has been patched. Fixed versions include 7.1.5 and 7.2. If you are running Linux kernel 5.15.111 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-72439 actively exploited?
No. CVE-2026-72439 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.