High severity7.8NVD Advisory· Published Nov 28, 2016· Updated May 6, 2026
CVE-2016-9644
CVE-2016-9644
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 products
7cpe:2.3:o:linux:linux_kernel:4.4.22:*:*:*:*:*:*:*+ 6 more
- cpe:2.3:o:linux:linux_kernel:4.4.22:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:4.4.23:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:4.4.24:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:4.4.25:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:4.4.26:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:4.4.27:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:4.4.28:*:*:*:*:*:*:*
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
5- www.openwall.com/lists/oss-security/2016/11/07/4nvdMailing ListThird Party Advisory
- lwn.net/Articles/705220/nvdProduct
- www.securityfocus.com/bid/94545nvd
- www.ubuntu.com/usn/USN-3146-1nvd
- www.ubuntu.com/usn/USN-3146-2nvd
News mentions
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