CVE-2016-2383
Last modified
CVE-2016-2383 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. 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.. EPSS estimates a 0.37% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Linux | Linux Kernel | < 4.5.0 | — |
| Linux | Linux Kernel | 4.5.0 | Rc1 |
| Canonical | Ubuntu Linux | 14.04 | — |
| Canonical | Ubuntu Linux | 15.10 | — |
| Opensuse | Leap | 42.1 | — |
References
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00015.htmlThird Party Advisory
- http://www.openwall.com/lists/oss-security/2016/02/14/1Mailing List, Third Party Advisory
- http://www.ubuntu.com/usn/USN-2947-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-2947-2Third Party Advisory
- http://www.ubuntu.com/usn/USN-2947-3Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1308452Issue Tracking, Third Party Advisory
- https://github.com/torvalds/linux/commit/a1b14d27ed0965838350f1377ff97c93ee383492Patch, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00015.htmlThird Party Advisory
- http://www.openwall.com/lists/oss-security/2016/02/14/1Mailing List, Third Party Advisory
- http://www.ubuntu.com/usn/USN-2947-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-2947-2Third Party Advisory
- http://www.ubuntu.com/usn/USN-2947-3Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1308452Issue Tracking, Third Party Advisory
- https://github.com/torvalds/linux/commit/a1b14d27ed0965838350f1377ff97c93ee383492Patch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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