CVE-2016-9644 — Vulnetix

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CVE-2016-9644 PUBLISHED

The __get_user_asm_ex macro in arch/x86/include/asm/uaccess.h in the Linux kernel 4.4.22 through 4.4.28 contains extended asm statements that are incompatible with the exception table, which allows local users to obtain root access on non-SMEP platforms via a crafted application. NOTE: this vulnerability exists because of incorrect backporting of the CVE-2016-9178 patch to older kernels.

EPSS 0.17% · 38.6th percentile

Risk Scores

EPSS Score

0.17%

38.6th percentile

Affected Products

Vendor	Product	Versions
Ubuntu:16.04:LTS	linux-snapdragon	4.4.0-1039.43, 4.4.0-1035.39, 4.4.0-1032.36
Ubuntu:14.04:LTS	linux-lts-xenial	4.4.0-42.62~14.04.1, 0, 4.4.0-47.68~14.04.1
Ubuntu:14.04:LTS	linux	3.13.0-19.40, 3.13.0-20.42, 3.13.0-21.43
Ubuntu:16.04:LTS	linux	4.4.0-9.24, 4.4.0-10.25, 4.4.0-11.26

Timeline

Nov 27, 2016 CVE Published
Feb 4, 2022 EPSS Score
Mar 28, 2022 EPSS Score
May 19, 2022 EPSS Score
Jul 10, 2022 EPSS Score
Sep 1, 2022 EPSS Score
Oct 23, 2022 EPSS Score
Dec 14, 2022 EPSS Score
Feb 4, 2023 EPSS Score
Mar 7, 2023 EPSS Score
Mar 28, 2023 EPSS Score
May 19, 2023 EPSS Score

References

https://ubuntu.com/security/CVE-2016-9644 third-party-advisory
http://www.openwall.com/lists/oss-security/2016/11/03/2 third-party-advisory
http://www.openwall.com/lists/oss-security/2016/11/07/4 third-party-advisory
https://lwn.net/Articles/705220/ third-party-advisory
https://ubuntu.com/security/notices/USN-3146-1 vendor-advisory
https://ubuntu.com/security/notices/USN-3146-2 vendor-advisory
https://ubuntu.com/security/notices/USN-3161-4 vendor-advisory
https://www.cve.org/CVERecord?id=CVE-2016-9644 third-party-advisory

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