CVEvulnerability
CVE-2016-4557
7.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2016-05-23
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 7.2 HIGH — AV:L/AC:L/Au:N/C:C/I:C/A:C
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.
Affected configurations
• linux linux kernel (>= 4.4 < 4.4.11)
• linux linux kernel (>= 4.5 < 4.5.5)
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8358b02bf67d3a5d8a825070e1aa73f25fb2e4c7 Vendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00044.html Mailing List, Third Party Advisory
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.5 Vendor Advisory
- http://www.openwall.com/lists/oss-security/2016/05/06/4 Mailing List, Third Party Advisory
- https://bugs.chromium.org/p/project-zero/issues/detail?id=808 Third Party Advisory
- https://bugs.debian.org/823603 Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1334307 Issue Tracking, Third Party Advisory
- https://github.com/torvalds/linux/commit/8358b02bf67d3a5d8a825070e1aa73f25fb2e4c7 Vendor Advisory
- https://www.exploit-db.com/exploits/40759/ Third Party Advisory, VDB Entry
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8358b02bf67d3a5d8a825070e1aa73f25fb2e4c7 Vendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00044.html Mailing List, Third Party Advisory
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.5 Vendor Advisory
- http://www.openwall.com/lists/oss-security/2016/05/06/4 Mailing List, Third Party Advisory
- https://bugs.chromium.org/p/project-zero/issues/detail?id=808 Third Party Advisory
- https://bugs.debian.org/823603 Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1334307 Issue Tracking, Third Party Advisory
- https://github.com/torvalds/linux/commit/8358b02bf67d3a5d8a825070e1aa73f25fb2e4c7 Vendor Advisory
- https://www.exploit-db.com/exploits/40759/ Third Party Advisory, VDB Entry