Resource exhaustion in Linux kernel - CVE-2010-4251
Published: May 26, 2011 / Updated: August 11, 2020
Vulnerability identifier: #VU45023
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2010-4251
CWE-ID: CWE-400
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.
The socket implementation in net/core/sock.c in the Linux kernel before 2.6.34 does not properly manage a backlog of received packets, which allows remote attackers to cause a denial of service (memory consumption) by sending a large amount of network traffic, as demonstrated by netperf UDP tests.
Affected software
Linux kernel
How to mitigate CVE-2010-4251
Install update from vendor's website.
Linux kernel - update to 2.6.34
External References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=8eae939f1400326b06d0c9afe53d2a484a326871
- http://kerneltrap.org/mailarchive/linux-netdev/2010/3/3/6271093/thread
- http://secunia.com/advisories/46397
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.34
- http://www.securityfocus.com/archive/1/520102/100/0/threaded
- http://www.securityfocus.com/bid/46637
- http://www.vmware.com/security/advisories/VMSA-2011-0012.html
- https://bugzilla.redhat.com/show_bug.cgi?id=657303