Vulnerability identifier: #VU44039
Vulnerability risk: Medium
CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-20
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Linux kernel
Operating systems & Components /
Operating system
Vendor: Linux Foundation
Description
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
The x86_assign_hw_event function in arch/x86/kernel/cpu/perf_event.c in the Performance Events subsystem in the Linux kernel before 2.6.39 does not properly calculate counter values, which allows local users to cause a denial of service (panic) via the perf program.
Mitigation
Install update from vendor's website.
Vulnerable software versions
Linux kernel: 2.6.0 - 2.6.38.8
External links
http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=fc66c5210ec2539e800e87d7b3a985323c7be96e
http://www.openwall.com/lists/oss-security/2011/07/06/4
http://bugzilla.redhat.com/show_bug.cgi?id=719228
http://github.com/torvalds/linux/commit/fc66c5210ec2539e800e87d7b3a985323c7be96e
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.