PT-2012-3993 · Linux+3 · Linux Kernel+3

Jian Li · Published 2012-06-13 · Updated 2023-02-13 · CVE-2012-2375

Positive Technologies (AI Summary)

CVSS v2.0

4.6

Medium

Base vector

AV:A/AC:H/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 3.3.2

Description The issue is related to the nfs4 get acl uncached function in the NFSv4 implementation, which uses an incorrect length variable during a copy operation. This allows remote NFS servers to cause a denial of service by sending an excessive number of bitmap words in an FATTR4 ACL reply. The problem exists because of an incomplete fix for a previous issue.

Recommendations For versions prior to 3.3.2, update to version 3.3.2 or later to resolve the issue. As a temporary workaround, consider restricting access to the nfs4 get acl uncached function in the fs/nfs/nfs4proc.c file until a patch is available.

Exploit

Fix

DoS

Weakness Enumeration

CWE-189

Related Identifiers

CESA-2012_1580

CVE-2012-2375

RHSA-2012:1580

RHSA-2012_1580

RHSA-2013:0566

SUSE-SU-2015:0481-1

USN-1486-1

USN-1487-1

USN-1488-1

USN-1489-1

USN-1490-1

USN-1494-1

USN-1499-1

USN-1530-1

Affected Products

Centos

Linux Kernel

Red Hat

Suse

References · 24

• 🔥 https://github.com/torvalds/linux/commit/20e0fa98b751facf9a1101edaefbc19c82616a68 · Exploit
• https://osv.dev/vulnerability/UBUNTU-CVE-2012-2375 · Vendor Advisory
• http://marc.info/?l=bugtraq&m=139447903326211&w=2 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2012-2375 · Security Note
• https://ubuntu.com/security/notices/USN-1487-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2012-2375 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-1490-1 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2012-1580.html · Vendor Advisory
• https://ubuntu.com/security/notices/USN-1499-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2012-2375 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-1489-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-1486-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2012-2375 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2012-2047.html · Vendor Advisory
• https://ubuntu.com/security/notices/USN-1488-1 · Vendor Advisory