The BPF_S_ANC_NLATTR_NEST extension implementation in the sk_run_filter function in net/core/filter.c in the Linux kernel through 3.14.3 uses the reverse order in a certain subtraction, which allows local users to cause a denial of service (over-read and system crash) via crafted BPF instructions. NOTE: the affected code was moved to the __skb_get_nlattr_nest function before the vulnerability was announced.
| Software | From | Fixed in |
|---|---|---|
| linux / linux_kernel | - | 3.14.3.x |
| oracle / linux | 6 | 6.x |
| oracle / linux | 7 | 7.x |
| canonical / ubuntu_linux | 13.10 | 13.10.x |
| canonical / ubuntu_linux | 12.04 | 12.04.x |
| canonical / ubuntu_linux | 10.04 | 10.04.x |
| debian / debian_linux | 7.0 | 7.0.x |