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Sicherheit: Mehrere Probleme in Linux
Aktuelle Meldungen Distributionen
Name: Mehrere Probleme in Linux
ID: SUSE-SU-2019:0645-1
Distribution: SUSE
Plattformen: SUSE Linux Enterprise Server 12-LTSS
Datum: Di, 19. März 2019, 22:48
Referenzen: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-5391
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-7221
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9213
Applikationen: Linux

Originalnachricht


SUSE Security Update: Security update for the Linux Kernel (Live Patch 33
for SLE 12)
______________________________________________________________________________

Announcement ID: SUSE-SU-2019:0645-1
Rating: important
References: #1103098 #1124734 #1128378
Cross-References: CVE-2018-5391 CVE-2019-7221 CVE-2019-9213

Affected Products:
SUSE Linux Enterprise Server 12-LTSS
______________________________________________________________________________

An update that fixes three vulnerabilities is now available.

Description:

This update for the Linux Kernel 3.12.61-52_125 fixes several issues.

The following security issues were fixed:

- CVE-2019-9213: Expand_downwards in mm/mmap.c lacked a check for the mmap
minimum address, which made it easier for attackers to exploit kernel
NULL pointer dereferences on non-SMAP platforms. This is related to a
capability check for the wrong task (bsc#1128378).
- CVE-2019-7221: Fixed a user-after-free vulnerability in the KVM
hypervisor related to the emulation of a preemption timer, allowing an
guest user/process to crash the host kernel. (bsc#1124734).
- CVE-2018-5391: The Linux kernel was vulnerable to a denial of service
attack with low rates of specially modified packets targeting IP
fragment re-assembly. An attacker might have caused a denial of service
condition by sending specially crafted IP fragments. Various
vulnerabilities in IP fragmentation have been discovered and fixed over
the years. The current vulnerability (CVE-2018-5391) became exploitable
in the Linux kernel with the increase of the IP fragment reassembly
queue size (bsc#1103098).


Patch Instructions:

To install this SUSE Security Update use the SUSE recommended installation
methods
like YaST online_update or "zypper patch".

Alternatively you can run the command listed for your product:

- SUSE Linux Enterprise Server 12-LTSS:

zypper in -t patch SUSE-SLE-SERVER-12-2019-645=1
SUSE-SLE-SERVER-12-2019-646=1 SUSE-SLE-SERVER-12-2019-647=1 SUSE-SLE-SERVER-12-2019-648=1 SUSE-SLE-SERVER-12-2019-649=1 SUSE-SLE-SERVER-12-2019-650=1



Package List:

- SUSE Linux Enterprise Server 12-LTSS (x86_64):

kgraft-patch-3_12_61-52_125-default-12-2.1
kgraft-patch-3_12_61-52_125-xen-12-2.1
kgraft-patch-3_12_61-52_128-default-10-2.1
kgraft-patch-3_12_61-52_128-xen-10-2.1
kgraft-patch-3_12_61-52_133-default-9-2.1
kgraft-patch-3_12_61-52_133-xen-9-2.1
kgraft-patch-3_12_61-52_136-default-9-2.1
kgraft-patch-3_12_61-52_136-xen-9-2.1
kgraft-patch-3_12_61-52_141-default-8-2.1
kgraft-patch-3_12_61-52_141-xen-8-2.1
kgraft-patch-3_12_61-52_146-default-6-2.1
kgraft-patch-3_12_61-52_146-xen-6-2.1


References:

https://www.suse.com/security/cve/CVE-2018-5391.html
https://www.suse.com/security/cve/CVE-2019-7221.html
https://www.suse.com/security/cve/CVE-2019-9213.html
https://bugzilla.suse.com/1103098
https://bugzilla.suse.com/1124734
https://bugzilla.suse.com/1128378

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