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VULNERABILITIES

CVE-2026-80959 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: kernel.orgCVSS-B:7.8 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://git.kernel.org/stable/c/8bf7a06ca3c1611809725f58cfd573f2ffbda75f kernel.org
https://git.kernel.org/stable/c/d1898576090a10d2ac2715218a652e78fb65a6b0 kernel.org
https://git.kernel.org/stable/c/ffd9a214a94f9928e54856f42b1cc3e33fb10e36 kernel.org

Weakness Enumeration

No weakness enumeration is available for this CVE.

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-80959
NVD Published Date:
Sep 11, 2026
NVD Last Modified:
Sep 13, 2026
Source:
kernel.org
CVE-2026-80959 Details - Not Deferred