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CVE-2016-4557 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.8 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8358b02bf67d3a5d8a825070e1aa73f25fb2e4c7	CVE	Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00044.html	CVE	Mailing ListThird Party Advisory
https://bugs.chromium.org/p/project-zero/issues/detail?id=808	CVE	Third Party Advisory
https://bugs.debian.org/823603	CVE	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1334307	CVE	Issue TrackingThird Party Advisory
https://github.com/torvalds/linux/commit/8358b02bf67d3a5d8a825070e1aa73f25fb2e4c7	CVE	Vendor Advisory
https://www.exploit-db.com/exploits/40759/	CVE	Third Party AdvisoryVDB Entry
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.5	CVE	Vendor Advisory
http://www.openwall.com/lists/oss-security/2016/05/06/4	CVE	Mailing ListThird Party Advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8358b02bf67d3a5d8a825070e1aa73f25fb2e4c7	[email protected]	Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00044.html	[email protected]	Mailing ListThird Party Advisory
https://bugs.chromium.org/p/project-zero/issues/detail?id=808	[email protected]	Third Party Advisory
https://bugs.debian.org/823603	[email protected]	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1334307	[email protected]	Issue TrackingThird Party Advisory
https://github.com/torvalds/linux/commit/8358b02bf67d3a5d8a825070e1aa73f25fb2e4c7	[email protected]	Vendor Advisory
https://www.exploit-db.com/exploits/40759/	[email protected]	Third Party AdvisoryVDB Entry
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.5	[email protected]	Vendor Advisory
http://www.openwall.com/lists/oss-security/2016/05/06/4	[email protected]	Mailing ListThird Party Advisory

see all 18 references

Weakness Enumeration

CWE-ID	CWE Name	Source
NVD-CWE-Other	Weakness Not in a Standard CWE Category	[email protected]

Affected Products

Product	Versions
linux linux kernel	>= 4.4, < 4.4.11 >= 4.5, < 4.5.5
CPE cpe:2.3:o:linux:linux_kernel:::::::: Remediation No remediation found in references.

Change History

9 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
May 6, 2026	Status Change	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Jan 17, 2023	Modified Analysis	[email protected]
Sep 3, 2017	CVE Modified	[email protected]
Nov 28, 2016	CVE Modified	[email protected]
May 24, 2016	Modified Analysis	[email protected]
May 24, 2016	Initial Analysis	[email protected]