Input validation error in Linux kernel - CVE-2013-2146
Published: June 7, 2013 / Updated: August 11, 2020
Vulnerability identifier: #VU42793
CSH Severity: Medium
CVSS v4: 6.9 [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]
CVE-ID: CVE-2013-2146
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
arch/x86/kernel/cpu/perf_event_intel.c in the Linux kernel before 3.8.9, when the Performance Events Subsystem is enabled, specifies an incorrect bitmask, which allows local users to cause a denial of service (general protection fault and system crash) by attempting to set a reserved bit.
Affected software
Linux kernel
Ubuntu
linux (Ubuntu package)
linux-lts-quantal (Ubuntu package)
linux-lts-raring (Ubuntu package)
Ubuntu
linux (Ubuntu package)
linux-lts-quantal (Ubuntu package)
linux-lts-raring (Ubuntu package)
How to mitigate CVE-2013-2146
Install update from vendor's website.
linux (Ubuntu package) - addressed in versions 3.2.0-48.74, 3.5.0-34.55, 3.8.0-22.33
linux-lts-quantal (Ubuntu package) - update to 3.5.0-34.55~precise1
linux-lts-raring (Ubuntu package) - update to 3.8.0-23.34~precise1
linux-lts-quantal (Ubuntu package) - update to 3.5.0-34.55~precise1
linux-lts-raring (Ubuntu package) - update to 3.8.0-23.34~precise1
External References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=f1923820c447e986a9da0fc6bf60c1dccdf0408e
- http://rhn.redhat.com/errata/RHSA-2013-1173.html
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.9
- http://www.mandriva.com/security/advisories?name=MDVSA-2013:176
- http://www.openwall.com/lists/oss-security/2013/06/05/23
- https://bugzilla.redhat.com/show_bug.cgi?id=971309
- https://github.com/torvalds/linux/commit/f1923820c447e986a9da0fc6bf60c1dccdf0408e