CVE-2026-72223
In the Linux kernel, the following vulnerability has been resolved: nvdimm/btt: Free arena sub-allocations on discover_arenas() error path Memory allocated by btt_freelist_init(), btt_rtt_init(), and btt_maplocks_init() is not freed on some discover_arenas() error paths. This leaks memory when arena discovery fails. Add the missing kfree() calls to release the allocations before returning an error. [ as: commit message and log edits ]
Affected versions
Linux kernel versions
4.2
and later are affected. Fixed in
5.10.261,
5.15.212,
6.1.178,
6.6.145,
6.12.97,
6.18.40,
7.1.5,
7.2-rc1
and their respective stable series.
References
8 totalFrequently asked questions
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What is CVE-2026-72223?
CVE-2026-72223 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 4.2 onward and has been patched in 5.10.261, 5.15.212, 6.1.178 and others. CVE-2026-72223 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-2026-72223?
Yes. CVE-2026-72223 has been patched. Fixed versions include 5.10.261, 5.15.212, 6.1.178 and others. If you are running Linux kernel 4.2 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-72223 actively exploited?
No. CVE-2026-72223 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.