CVEvulnerability
CVE-2016-9644
7.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2016-11-28
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.0 ([email protected])
- 7.8 HIGH — CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 9.3 HIGH — AV:N/AC:M/Au:N/C:C/I:C/A:C
- Weaknesses
- CWE-264
Description
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.
Affected configurations
• linux linux kernel 4.4.22
• linux linux kernel 4.4.23
• linux linux kernel 4.4.24
• linux linux kernel 4.4.25
• linux linux kernel 4.4.26
• linux linux kernel 4.4.27
• linux linux kernel 4.4.28
Related
Weakness · not in database (1)
References
- http://www.openwall.com/lists/oss-security/2016/11/07/4 Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/94545 www.securityfocus.com
- http://www.ubuntu.com/usn/USN-3146-1 www.ubuntu.com
- http://www.ubuntu.com/usn/USN-3146-2 www.ubuntu.com
- https://lwn.net/Articles/705220/ Product
- http://www.openwall.com/lists/oss-security/2016/11/07/4 Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/94545 www.securityfocus.com
- http://www.ubuntu.com/usn/USN-3146-1 www.ubuntu.com
- http://www.ubuntu.com/usn/USN-3146-2 www.ubuntu.com
- https://lwn.net/Articles/705220/ Product