What is CVE-2026-64182?

CVE-2026-64182 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 6.2 onward and 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.

What is the CVSS score for CVE-2026-64182?

CVE-2026-64182 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

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.

Is CVE-2026-64182 actively exploited?

CVE-2026-64182 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-64182

Medium

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.

Package Linux Kernel

Published 2026-07-19

Last modified 2026-08-11

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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.

Affected from

≥ 6.2

Fixed in

✓ 6.6.142 6.6.x ✓ 6.12.92 6.12.x ✓ 6.18.34 6.18.x ✓ 7.0.11 7.0.x ✓ 7.1

References

5 total

Kernel Git
https://git.kernel.org/stable/c/03a2cc1756a0570f887d624cd6c535ea0cbd4951

Patch
Kernel Git
https://git.kernel.org/stable/c/24840b3139d7415144b81e4f9f4c44670d15bed9

Patch
Kernel Git
https://git.kernel.org/stable/c/686b4283f82cd630fafd7ca9b03dfc080b3ec8fa

Patch
Kernel Git
https://git.kernel.org/stable/c/8502e2c2d0633f99d94d22ae8dabc10caae1fc2a

Patch
Kernel Git
https://git.kernel.org/stable/c/ce60d9452a0f2effa72fd20ea270c59ca691d455

Patch

Details

CVE ID CVE-2026-64182

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-07-19

Modified 2026-08-11

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-64182?

CVE-2026-64182 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . 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.
What is the CVSS score for CVE-2026-64182?

CVE-2026-64182 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
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.
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.