CVE-2016-4557
- State
- Published
- Severity
- Not scored
- Published
- May 23, 2016
- Updated
- Aug 6, 2024
- Reserved
- May 6, 2016
Description
The replace_map_fd_with_map_ptr function in kernel/bpf/verifier.c in the Linux kernel before 4.5.5 does not properly maintain an fd data structure, which allows local users to gain privileges or cause a denial of service (use-after-free) via crafted BPF instructions that reference an incorrect file descriptor.
Scores
The record has no CVSS score.
Weaknesses
The record names no weakness.
Affected Products
| Product | Versions |
|---|---|
n/an/a |
|
References
- https://bugs.debian.org/823603
- openSUSE-SU-2016:1641vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1334307
- https://github.com/torvalds/linux/commit/8358b02bf67d3a5d8a825070e1aa73f25fb2e4c7
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.5
- https://bugs.chromium.org/p/project-zero/issues/detail?id=808
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8358b02bf67d3a5d8a825070e1aa73f25fb2e4c7
- [oss-security] 20160506 CVE Requests: Linux: BPF flaws (one use-after-free / local root privilege escalation)mailing-list
- 40759exploit
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