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-rc1
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-rc1. 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-rc1. 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.