Description
kernel/bpf/verifier.c in the Linux kernel 4.9.x through 4.9.71 does not check the relationship between pointer values and the BPF stack, which allows local users to cause a denial of service (integer overflow or invalid memory access) or possibly have unspecified other impact.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
References
- http://www.securitytracker.com/id/1040058 ↗
- https://usn.ubuntu.com/3523-3/ ↗
- https://www.spinics.net/lists/stable/msg206985.html ↗
- http://www.securityfocus.com/bid/102321 ↗
- https://www.debian.org/security/2017/dsa-4073 ↗
- https://usn.ubuntu.com/usn/usn-3523-2/ ↗
- https://anonscm.debian.org/cgit/kernel/linux.git/tree/debian/patches/bugfix/all/bpf-reject-out-of-bounds-stack-pointer-calculation.patch?h=stretch-security ↗