CVE-2014-3144
The (1) BPF_S_ANC_NLATTR and (2) BPF_S_ANC_NLATTR_NEST extension implementations in the sk_run_filter function in net/core/filter.c in the Linux kernel through 3.14.3 do not check whether a certain length value is sufficiently large, which allows local users to cause a denial of service (integer underflow and system crash) via crafted BPF instructions. NOTE: the affected code was moved to the __skb_get_nlattr and __skb_get_nlattr_nest functions before the vulnerability was announced.
Ver en NVDSeveridad
N/A
EPSS
Afecta
linux:linux_kerneldebian:debian_linuxcanonical:ubuntu_linuxoracle:linuxDescripción técnica
The (1) BPF_S_ANC_NLATTR and (2) BPF_S_ANC_NLATTR_NEST extension implementations in the sk_run_filter function in net/core/filter.c in the Linux kernel through 3.14.3 do not check whether a certain length value is sufficiently large, which allows local users to cause a denial of service (integer underflow and system crash) via crafted BPF instructions. NOTE: the affected code was moved to the __skb_get_nlattr and __skb_get_nlattr_nest functions before the vulnerability was announced.
Referencias
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=05ab8f2647e4221cbdb3856dd7d32bd5407316b3
- http://linux.oracle.com/errata/ELSA-2014-3052.html
- http://secunia.com/advisories/58990
- http://secunia.com/advisories/59311
- http://secunia.com/advisories/59597
- http://secunia.com/advisories/60613
- http://www.debian.org/security/2014/dsa-2949
- http://www.openwall.com/lists/oss-security/2014/05/09/6