CVE-2017-16995

high

Description

The check_alu_op function in kernel/bpf/verifier.c in the Linux kernel through 4.4 allows local users to cause a denial of service (memory corruption) or possibly have unspecified other impact by leveraging incorrect sign extension.

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=95a762e2c8c942780948091f8f2a4f32fce1ac6f

http://openwall.com/lists/oss-security/2017/12/21/2

http://www.securityfocus.com/bid/102288

https://bugs.chromium.org/p/project-zero/issues/detail?id=1454

https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=a6132276ab5dcc38b3299082efeb25b948263adb

https://github.com/torvalds/linux/commit/95a762e2c8c942780948091f8f2a4f32fce1ac6f

https://usn.ubuntu.com/3619-1/

https://usn.ubuntu.com/3619-2/

https://usn.ubuntu.com/3633-1/

https://usn.ubuntu.com/usn/usn-3523-2/

https://www.debian.org/security/2017/dsa-4073

https://www.exploit-db.com/exploits/44298/

https://www.exploit-db.com/exploits/45010/

https://www.exploit-db.com/exploits/45058/

Details

Source: MITRE

Published: 2017-12-27

Updated: 2021-01-05

Type: CWE-119

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