CVE - CVE-2016-4557

CVE-ID
CVE-2016-4557	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
CONFIRM:http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8358b02bf67d3a5d8a825070e1aa73f25fb2e4c7 CONFIRM:http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.5 CONFIRM:https://bugs.debian.org/823603 CONFIRM:https://bugzilla.redhat.com/show_bug.cgi?id=1334307 CONFIRM:https://github.com/torvalds/linux/commit/8358b02bf67d3a5d8a825070e1aa73f25fb2e4c7 EXPLOIT-DB:40759 URL:https://www.exploit-db.com/exploits/40759/ MISC:https://bugs.chromium.org/p/project-zero/issues/detail?id=808 MLIST:[oss-security] 20160506 CVE Requests: Linux: BPF flaws (one use-after-free / local root privilege escalation) URL:http://www.openwall.com/lists/oss-security/2016/05/06/4 SUSE:openSUSE-SU-2016:1641 URL:http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00044.html
Assigning CNA
MITRE Corporation
Date Record Created
20160506	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20160506)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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