CVE-2026-64182
In the Linux kernel, the following vulnerability has been resolved: drivers/base/memory: fix memory block reference leak in poison accounting memblk_nr_poison_inc() and memblk_nr_poison_sub() look up a memory block via find_memory_block_by_id(), which acquires a reference to the memory block device. Both helpers use the returned memory block without dropping that reference, leaking the device reference on each successful lookup. Drop the reference after updating nr_hwpoison.
Affected versions
Linux kernel versions
6.2
and later are affected. Fixed in
6.6.142,
6.12.92,
6.18.34,
7.0.11,
7.1
and their respective stable series.
References
5 totalFrequently asked questions
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What is CVE-2026-64182?
CVE-2026-64182 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.2 onward and has been patched in 6.6.142, 6.12.92, 6.18.34 and others. CVE-2026-64182 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-2026-64182?
Yes — CVE-2026-64182 has been patched. Fixed versions include 6.6.142, 6.12.92, 6.18.34 and others. If you are running Linux kernel 6.2 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-64182 actively exploited?
No — CVE-2026-64182 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.