CVE-2016-4557

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.

CVSS v3.0 7.8 HIGH
CVSS v2.0 7.2 HIGH

7.8^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.2^/10

CVSS v2.0 : HIGH

Vector : AV:L/AC:L/Au:N/C:C/I:C/A:C

Exploitability : 3.9 / Impact : 10.0

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8358b02bf67d3a5d8a825070e1aa73f25fb2e4c7	Vendor 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://bugs.chromium.org/p/project-zero/issues/detail?id=808	Third Party Advisory
https://bugs.debian.org/823603	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
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00044.html	Mailing List Third Party Advisory
https://www.exploit-db.com/exploits/40759/	Third Party Advisory VDB Entry

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

Information

Published : 2016-05-23 03:59

Updated : 2023-01-17 13:40

NVD link : CVE-2016-4557

Mitre link : CVE-2016-4557

JSON object : View

CWE

NVD-CWE-Other

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Products Affected

linux

linux_kernel

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