CVE-2014-1438

Severity: medium (CVSS 4.7 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2014-01-18 · updated 2026-06-17
Weakness: CWE-264

Description

The restore_fpu_checking function in arch/x86/include/asm/fpu-internal.h in the Linux kernel before 3.12.8 on the AMD K7 and K8 platforms does not clear pending exceptions before proceeding to an EMMS instruction, which allows local users to cause a denial of service (task kill) or possibly gain privileges via a crafted application.

Affected products

Linux kernel: through 3.12.7; 3.12, 3.12.1, 3.12.2, 3.12.3, 3.12.4, 3.12.5 (+1)

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=26bef1318adc1b3a530ecc807ef99346db2aa8b0
http://lists.fedoraproject.org/pipermail/package-announce/2014-January/126858.html
http://lists.fedoraproject.org/pipermail/package-announce/2014-January/126874.html
http://www.halfdog.net/Security/2013/Vm86SyscallTaskSwitchKernelPanic/
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.12.8
http://www.mandriva.com/security/advisories?name=MDVSA-2014:038
http://www.openwall.com/lists/oss-security/2014/01/14/1
http://www.securityfocus.com/bid/64781
http://www.securitytracker.com/id/1029592
http://www.ubuntu.com/usn/USN-2113-1
http://www.ubuntu.com/usn/USN-2117-1
http://www.ubuntu.com/usn/USN-2133-1

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