CVE-2026-64182
Published Jul 19, 2026
Description
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.
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EPSS — Exploit Prediction
0.0016
Probability of exploitation
0.05%
Percentile rank
EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.
References
Other References
https://git.kernel.org/stable/c/03a2cc1756a0570f887d624cd6c535ea0cbd4951
https://git.kernel.org/stable/c/24840b3139d7415144b81e4f9f4c44670d15bed9
https://git.kernel.org/stable/c/686b4283f82cd630fafd7ca9b03dfc080b3ec8fa
https://git.kernel.org/stable/c/8502e2c2d0633f99d94d22ae8dabc10caae1fc2a
https://git.kernel.org/stable/c/ce60d9452a0f2effa72fd20ea270c59ca691d455
Frequently Asked Questions
What is 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.
How do I check if I'm vulnerable to CVE-2026-64182? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.