Description (CNA)
The adjust_branches function in kernel/bpf/verifier.c in the Linux kernel before 4.5 does not consider the delta in the backward-jump case, which allows local users to obtain sensitive information from kernel memory by creating a packet filter and then loading crafted BPF instructions.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| n/a / n/a | affected n/a |
CWE
No CWE identifiers supplied.
References
- https://github.com/torvalds/linux/commit/a1b14d27ed0965838350f1377ff97c93ee383492
- http://www.ubuntu.com/usn/USN-2947-3
- http://www.ubuntu.com/usn/USN-2947-2
- http://www.ubuntu.com/usn/USN-2947-1
- http://www.openwall.com/lists/oss-security/2016/02/14/1
- https://bugzilla.redhat.com/show_bug.cgi?id=1308452
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a1b14d27ed0965838350f1377ff97c93ee383492
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00015.html
ADP enrichment
No English description supplied.
- https://github.com/torvalds/linux/commit/a1b14d27ed0965838350f1377ff97c93ee383492
- http://www.ubuntu.com/usn/USN-2947-3
- http://www.ubuntu.com/usn/USN-2947-2
- http://www.ubuntu.com/usn/USN-2947-1
- http://www.openwall.com/lists/oss-security/2016/02/14/1
- https://bugzilla.redhat.com/show_bug.cgi?id=1308452
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a1b14d27ed0965838350f1377ff97c93ee383492
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00015.html