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AUSCERT External Security Bulletin Redistribution
ESB-2023.1916
Security update for the Linux Kernel (Live Patch 7 for SLE 15 SP4)
3 April 2023
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AusCERT Security Bulletin Summary
---------------------------------
Product: Linux Kernel
Publisher: SUSE
Operating System: SUSE
Resolution: Patch/Upgrade
CVE Names: CVE-2023-26545 CVE-2023-1078 CVE-2023-0266
Original Bulletin:
https://www.suse.com/support/update/announcement/2023/suse-su-20231708-1
Comment: CVSS (Max): 7.8 CVE-2023-1078 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
CVSS Source: SUSE
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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Security update for the Linux Kernel (Live Patch 7 for SLE 15 SP4)
Announcement ID: SUSE-SU-2023:1708-1
Rating: important
o #1207190
References: o #1208838
o #1208909
o CVE-2023-0266
Cross-References: o CVE-2023-1078
o CVE-2023-26545
o CVE-2023-0266 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/
S:U/C:H/I:H/A:H
o CVE-2023-0266 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/
S:U/C:H/I:H/A:H
o CVE-2023-1078 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/
CVSS scores: S:U/C:H/I:H/A:H
o CVE-2023-26545 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N
/S:U/C:H/I:H/A:H
o CVE-2023-26545 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/
S:U/C:H/I:H/A:H
o SUSE Linux Enterprise High Performance Computing 15 SP4
o SUSE Linux Enterprise Live Patching 15-SP4
Affected o SUSE Linux Enterprise Micro 5.3
Products: o SUSE Linux Enterprise Micro 5.4
o SUSE Linux Enterprise Real Time 15 SP4
o SUSE Linux Enterprise Server 15 SP4
o SUSE Linux Enterprise Server for SAP Applications 15 SP4
An update that solves three vulnerabilities can now be installed.
Description:
This update for the Linux Kernel 5.14.21-150400_24_41 fixes several issues.
The following security issues were fixed:
o CVE-2023-26545: Fixed double free in net/mpls/af_mpls.c upon an allocation
failure (bsc#1208700).
o CVE-2023-1078: Fixed a heap out-of-bounds write in rds_rm_zerocopy_callback
(bsc#1208838).
o CVE-2023-0266: Fixed a use-after-free vulnerability inside the ALSA PCM
package. SNDRV_CTL_IOCTL_ELEM_{READ|WRITE}32 was missing locks that could
have been used in a use-after-free that could have resulted in a priviledge
escalation to gain ring0 access from the system user (bsc#1207190).
Patch Instructions:
To install this SUSE Important update use the SUSE recommended installation
methods like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:
o SUSE Linux Enterprise Live Patching 15-SP4
zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP4-2023-1708=1
Package List:
o SUSE Linux Enterprise Live Patching 15-SP4 (ppc64le s390x x86_64)
kernel-livepatch-5_14_21-150400_24_41-default-3-150400.2.3
kernel-livepatch-SLE15-SP4_Update_7-debugsource-3-150400.2.3
kernel-livepatch-5_14_21-150400_24_41-default-debuginfo-3-150400.2.3
References:
o https://www.suse.com/security/cve/CVE-2023-0266.html
o https://www.suse.com/security/cve/CVE-2023-1078.html
o https://www.suse.com/security/cve/CVE-2023-26545.html
o https://bugzilla.suse.com/show_bug.cgiid=1207190
o https://bugzilla.suse.com/show_bug.cgiid=1208838
o https://bugzilla.suse.com/show_bug.cgiid=1208909
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