Permissions, Privileges, and Access Controls in Linux kernel - CVE-2014-3122
Published: May 12, 2014 / Updated: August 10, 2020
Vulnerability identifier: #VU41698
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2014-3122
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
The try_to_unmap_cluster function in mm/rmap.c in the Linux kernel before 3.14.3 does not properly consider which pages must be locked, which allows local users to cause a denial of service (system crash) by triggering a memory-usage pattern that requires removal of page-table mappings.
How to mitigate CVE-2014-3122
Install update from vendor's website.
Sources
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=57e68e9cd65b4b8eb4045a1e0d0746458502554c
- http://secunia.com/advisories/59386
- http://secunia.com/advisories/59599
- http://www.debian.org/security/2014/dsa-2926
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.14.3
- http://www.openwall.com/lists/oss-security/2014/05/01/7
- http://www.securityfocus.com/bid/67162
- http://www.ubuntu.com/usn/USN-2240-1
- https://bugzilla.redhat.com/show_bug.cgi?id=1093076
- https://github.com/torvalds/linux/commit/57e68e9cd65b4b8eb4045a1e0d0746458502554c