PT-2012-3077 · Linux+3 · Linux Kernel+3

Cai Qian · Published 2012-02-28 · Updated 2021-07-15 · CVE-2012-1090

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 3.2.10

Description The issue allows local users to cause a denial of service via attempted access to a special file, such as a FIFO. This occurs because the cifs code attempts to open files on lookup under certain circumstances, and if the opened file is a special file, the open filehandle is leaked, leading to a dentry refcount mismatch and an OOPS on umount.

Recommendations For Linux kernel versions prior to 3.2.10, update to version 3.2.10 or later to resolve the issue. As a temporary workaround, consider restricting access to special files, such as FIFOs, to minimize the risk of exploitation.

Fix

DoS

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CESA-2012_0481

CVE-2012-1090

DSA-2443-1

RHSA-2012:0481

RHSA-2012_0481

USN-1405-1

USN-1425-1

USN-1426-1

USN-1431-1

USN-1432-1

USN-1433-1

USN-1440-1

USN-1446-1

USN-1458-1

Affected Products

Centos

Linux Kernel

Red Hat

Suse

References · 28

• https://github.com/torvalds/linux/commit/88d7d4e4a439f32acc56a6d860e415ee71d3df08 · Patch
• https://linux.oracle.com/errata/ELSA-2012-2008.html · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00013.html · Vendor Advisory
• https://ubuntu.com/security/notices/USN-1432-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-1431-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-1405-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2012-1090 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-1425-1 · Vendor Advisory
• http://kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.10 · Vendor Advisory
• http://rhn.redhat.com/errata/RHSA-2012-0531.html · Vendor Advisory
• https://ubuntu.com/security/notices/USN-1446-1 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2012-2007.html · Vendor Advisory
• https://ubuntu.com/security/notices/USN-1433-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2012-1090 · Security Note
• https://linux.oracle.com/errata/ELSA-2012-0481.html · Vendor Advisory