CVE-2016-4557

high
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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

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8358b02bf67d3a5d8a825070e1aa73f25fb2e4c7

http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00044.html

http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.5

http://www.openwall.com/lists/oss-security/2016/05/06/4

https://bugs.chromium.org/p/project-zero/issues/detail?id=808

https://bugs.debian.org/823603

https://bugzilla.redhat.com/show_bug.cgi?id=1334307

https://github.com/torvalds/linux/commit/8358b02bf67d3a5d8a825070e1aa73f25fb2e4c7

https://www.exploit-db.com/exploits/40759/

Details

Source: MITRE

Published: 2016-05-23

Updated: 2017-09-03

Risk Information

CVSS v2

Base Score: 7.2

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

Impact Score: 10

Exploitability Score: 3.9

Severity: HIGH

CVSS v3

Base Score: 7.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 1.8

Severity: HIGH

Vulnerable Software

Configuration 1

OR

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to 4.5.4 (inclusive)

Tenable Plugins

View all (11 total)

IDNameProductFamilySeverity
124989EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1536)NessusHuawei Local Security Checks
high
93445openSUSE Security Update : the Linux Kernel (openSUSE-2016-1076)NessusSuSE Local Security Checks
critical
92195Fedora 24 : kernel (2016-ef973efab7)NessusFedora Local Security Checks
high
92123Fedora 22 : kernel (2016-84fdc82b74)NessusFedora Local Security Checks
high
92055Fedora 23 : kernel (2016-06f1572324)NessusFedora Local Security Checks
high
91736openSUSE Security Update : the Linux Kernel (openSUSE-2016-753)NessusSuSE Local Security Checks
critical
91241Amazon Linux AMI : kernel (ALAS-2016-703)NessusAmazon Linux Local Security Checks
high
91085Ubuntu 16.04 LTS : linux-snapdragon vulnerability (USN-2965-4)NessusUbuntu Local Security Checks
critical
91084Ubuntu 16.04 LTS : linux-raspi2 vulnerabilities (USN-2965-3)NessusUbuntu Local Security Checks
critical
91083Ubuntu 14.04 LTS : linux-lts-xenial vulnerabilities (USN-2965-2)NessusUbuntu Local Security Checks
critical
91082Ubuntu 16.04 LTS : linux vulnerabilities (USN-2965-1)NessusUbuntu Local Security Checks
critical