Memory leak in Linux kernel - CVE-2013-4205
Published: August 25, 2013 / Updated: August 10, 2020
Vulnerability identifier: #VU42627
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2013-4205
CWE-ID: CWE-401
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the unshare_userns function in kernel/user_namespace.c in the Linux kernel before 3.10.6 allows local users to cause a denial of service (memory consumption) via an invalid CLONE_NEWUSER unshare call. A remote attacker can perform a denial of service attack.
Affected software
Linux kernel
Ubuntu
linux (Ubuntu package)
linux-lts-raring (Ubuntu package)
Ubuntu
linux (Ubuntu package)
linux-lts-raring (Ubuntu package)
How to mitigate CVE-2013-4205
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.
linux (Ubuntu package) - update to 3.8.0-31.46
linux-lts-raring (Ubuntu package) - update to 3.8.0-31.46~precise1
linux-lts-raring (Ubuntu package) - update to 3.8.0-31.46~precise1
External References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6160968cee8b90a5dd95318d716e31d7775c4ef3
- http://twitter.com/grsecurity/statuses/364566062336978944
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.10.6
- http://www.openwall.com/lists/oss-security/2013/08/06/2
- http://www.ubuntu.com/usn/USN-1971-1
- http://www.ubuntu.com/usn/USN-1974-1
- https://github.com/torvalds/linux/commit/6160968cee8b90a5dd95318d716e31d7775c4ef3