CVE-2014-1438
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…
Does this matter?
Lower severity and a low EPSS score (0.65%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 2.0
- 4.7 MEDIUMAV:L/AC:M/Au:N/C:N/I:N/A:C
- EPSS
- 0.65% probability · 49th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-264
- Affected
- linux/linux kernel
- Source
- cve@mitre.org
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
- http://www.ubuntu.com/usn/USN-2134-1
- http://www.ubuntu.com/usn/USN-2135-1
- http://www.ubuntu.com/usn/USN-2136-1
- http://www.ubuntu.com/usn/USN-2138-1
- http://www.ubuntu.com/usn/USN-2139-1
- http://www.ubuntu.com/usn/USN-2141-1
- https://bugzilla.redhat.com/show_bug.cgi?id=1052914
- https://github.com/torvalds/linux/commit/26bef1318adc1b3a530ecc807ef99346db2aa8b0
- https://lkml.org/lkml/2014/1/9/637
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.