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.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/03a2cc1756a0570f887d624cd6c535ea0cbd4951	Patch
https://git.kernel.org/stable/c/24840b3139d7415144b81e4f9f4c44670d15bed9	Patch
https://git.kernel.org/stable/c/686b4283f82cd630fafd7ca9b03dfc080b3ec8fa	Patch
https://git.kernel.org/stable/c/8502e2c2d0633f99d94d22ae8dabc10caae1fc2a	Patch
https://git.kernel.org/stable/c/ce60d9452a0f2effa72fd20ea270c59ca691d455	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc1::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc2::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc3::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc4::::::

History

No history.

Information

Published : 2026-07-19 16:18

Updated : 2026-08-11 20:06

NVD link : CVE-2026-64182

Mitre link : CVE-2026-64182

CVE.ORG link : CVE-2026-64182

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-Other

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