SB2014040114 - Race condition in Linux kernel

Description

This security bulletin contains information about 1 vulnerability.

1) Race condition (CVE-ID: CVE-2014-2672)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: 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]

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

Race condition in the ath_tx_aggr_sleep function in drivers/net/wireless/ath/ath9k/xmit.c in the Linux kernel before 3.13.7 allows remote attackers to cause a denial of service (system crash) via a large amount of network traffic that triggers certain list deletions.

Remediation

Install update from vendor's website.

References

• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=21f8aaee0c62708654988ce092838aa7df4d25d8
• http://secunia.com/advisories/57468
• http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.13.7
• http://www.openwall.com/lists/oss-security/2014/03/30/5
• http://www.securityfocus.com/bid/66492
• https://bugzilla.kernel.org/show_bug.cgi?id=70551
• https://github.com/torvalds/linux/commit/21f8aaee0c62708654988ce092838aa7df4d25d8
• https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.12.15