CVE-2026-80959

In the Linux kernel, the following vulnerability has been resolved: dm-pcache: bound the persisted tail-position offset cache_pos_decode() takes the persisted key_tail and dirty_tail seg_off from the cache device and addresses within the segment with it. A seg_off at or past the segment data_size, controllable by whoever supplies the device (CAP_SYS_ADMIN), reads past the segment data. Reject a decoded seg_off that is not below the segment data_size.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/8bf7a06ca3c1611809725f58cfd573f2ffbda75f
https://git.kernel.org/stable/c/d1898576090a10d2ac2715218a652e78fb65a6b0
https://git.kernel.org/stable/c/ffd9a214a94f9928e54856f42b1cc3e33fb10e36

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-11 20:19

Updated : 2026-09-13 07:17

NVD link : CVE-2026-80959

Mitre link : CVE-2026-80959

CVE.ORG link : CVE-2026-80959

JSON object : View

Products Affected

No product.

CWE

No CWE.

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