How severe is CVE-2025-21691?

This vulnerability has a severity rating of NONE with a CVSS score of N/A out of 10.

What type of vulnerability is CVE-2025-21691?

This is classified as NVD-CWE-Other, which is a common weakness in software security.

CVE-2025-21691 - NONE Severity | CVSS N/A

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: cachestat: fix page cache statistics permission checking When the 'cachestat()' system call was added in commit cf264e1329fb ("cachestat: implement cachestat syscall"), it was meant to be a much more convenient (and performant) version of mincore() that didn't need mapping things into the user virtual address space in order to work. But it ended up missing the "check for writability or ownership" fix for mincore(), done in commit 134fca9063ad ("mm/mincore.c: make mincore() more conservative"). This just adds equivalent logic to 'cachestat()', modified for the file context (rather than vma).

Related Vulnerabilities

CVE-2016-8284

LOW

CVSS:1.8(Low)

Unspecified vulnerability in Oracle MySQL 5.6.31 and earlier and 5.7.13 and earlier allows local users to affect availability via vectors related to Server: Replication.

NVD-CWE-Other2016

CVE-2017-10122

LOW

CVSS:1.8(Low)

Vulnerability in the Solaris component of Oracle Sun Systems Products Suite (subcomponent: Kernel). Supported versions that are affected are 10 and 11. Difficult to exploit vulnerability allows high p...

NVD-CWE-Other2017

CVE-2018-3270

LOW

CVSS:1.8(Low)

Vulnerability in the Solaris component of Oracle Sun Systems Products Suite (subcomponent: Kernel). The supported version that is affected is 11.3. Difficult to exploit vulnerability allows high privi...

NVD-CWE-Other2018

CVE-2019-3008

LOW

CVSS:1.8(Low)

Vulnerability in the Oracle Solaris product of Oracle Systems (component: LDAP Library). The supported version that is affected is 11. Difficult to exploit vulnerability allows high privileged attacke...

NVD-CWE-Other2019

CVE-2021-2147

LOW

CVSS:1.8(Low)

Vulnerability in the Oracle ZFS Storage Appliance Kit product of Oracle Systems (component: Installation). The supported version that is affected is 8.8. Difficult to exploit vulnerability allows high...

NVD-CWE-Other2021

CVE-2021-35618

LOW

CVSS:1.8(Low)

Vulnerability in the MySQL Cluster product of Oracle MySQL (component: Cluster: General). Supported versions that are affected are 8.0.26 and prior. Difficult to exploit vulnerability allows high priv...

NVD-CWE-Other2021