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mageiaGentoo FoundationMGASA-2014-0227
HistoryMay 19, 2014 - 10:30 p.m.

Updated kernel-rt packages fix multiple vulnerabilities

2014-05-1922:30:17
Gentoo Foundation
advisories.mageia.org
48
kernel-rt
denial of service
privilege escalation
vulnerability
security fixes
3.12.20
3.14.1
3.14.3

CVSS2

7.2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:C/I:C/A:C

EPSS

0.01

Percentile

84.0%

Updated kernel-rt provides upstream 3.12.20 kernel and fixes the following security issues: The ioapic_deliver function in virt/kvm/ioapic.c in the Linux kernel through 3.14.1 does not properly validate the kvm_irq_delivery_to_apic return value, which allows guest OS users to cause a denial of service (host OS crash) via a crafted entry in the redirection table of an I/O APIC. NOTE: the affected code was moved to the ioapic_service function before the vulnerability was announced. (CVE-2014-0155) The n_tty_write function in drivers/tty/n_tty.c in the Linux kernel through 3.14.3 does not properly manage tty driver access in the โ€œLECHO & !OPOSTโ€ case, which allows local users to cause a denial of service (memory corruption and system crash) or gain privileges by triggering a race condition involving read and write operations with long strings. (CVE-2014-0196) The raw_cmd_copyin function in drivers/block/floppy.c in the Linux kernel through 3.14.3 does not properly handle error conditions during processing of an FDRAWCMD ioctl call, which allows local users to trigger kfree operations and gain privileges by leveraging write access to a /dev/fd device. (CVE-2014-1737) The raw_cmd_copyout function in drivers/block/floppy.c in the Linux kernel through 3.14.3 does not properly restrict access to certain pointers during processing of an FDRAWCMD ioctl call, which allows local users to obtain sensitive information from kernel heap memory by leveraging write access to a /dev/fd device. (CVE-2014-1738) The -rt patch has been updated to rt30. For other fixes, see the referenced changelogs.

OSVersionArchitecturePackageVersionFilename
Mageia4noarchkernel-rt<ย 3.12.20-0.rt30.1kernel-rt-3.12.20-0.rt30.1.mga4

CVSS2

7.2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:C/I:C/A:C

EPSS

0.01

Percentile

84.0%