SUSE-SU-2021:3360-1: important: Security update for the Linux Kernel (Live Patch 0 for SLE 15 SP3)
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Tue Oct 12 16:55:01 UTC 2021
SUSE Security Update: Security update for the Linux Kernel (Live Patch 0 for SLE 15 SP3)
______________________________________________________________________________
Announcement ID: SUSE-SU-2021:3360-1
Rating: important
References: #1187054 #1188613 #1190118 #1190127
Cross-References: CVE-2021-31440 CVE-2021-3573 CVE-2021-3640
CVE-2021-38160
CVSS scores:
CVE-2021-31440 (NVD) : 7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CVE-2021-31440 (SUSE): 7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CVE-2021-3573 (SUSE): 8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVE-2021-3640 (SUSE): 7.4 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVE-2021-38160 (SUSE): 7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Products:
SUSE Linux Enterprise Module for Live Patching 15-SP3
______________________________________________________________________________
An update that fixes four vulnerabilities is now available.
Description:
This update for the Linux Kernel 5.3.18-57 fixes several issues.
The following security issues were fixed:
- CVE-2021-31440: Fixed a lack of proper validation of user-supplied eBPF
programs prior to executing them. An attacker can leverage this
vulnerability to escalate privileges and execute arbitrary code in the
context of the kernel. (bsc#1190127).
- CVE-2021-38160: Fixed a bug that could lead to a data corruption or
loss. This can be triggered by an untrusted device that supplies a
buf->len value exceeding the buffer size in
drivers/char/virtio_console.c (bsc#1190118)
- CVE-2021-3640: Fixed a user-after-free bug in the function
sco_sock_sendmsg which could lead to local privilege escalation.
(bsc#1188613)
- CVE-2021-3573: Fixed a user-after-free bug in the function
hci_sock_bound_ioctl which could lead to local privilege escalation.
(bsc#1187054).
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 Module for Live Patching 15-SP3:
zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP3-2021-3360=1
Package List:
- SUSE Linux Enterprise Module for Live Patching 15-SP3 (ppc64le s390x x86_64):
kernel-livepatch-5_3_18-57-default-7-3.1
kernel-livepatch-5_3_18-57-default-debuginfo-7-3.1
kernel-livepatch-SLE15-SP3_Update_0-debugsource-7-3.1
References:
https://www.suse.com/security/cve/CVE-2021-31440.html
https://www.suse.com/security/cve/CVE-2021-3573.html
https://www.suse.com/security/cve/CVE-2021-3640.html
https://www.suse.com/security/cve/CVE-2021-38160.html
https://bugzilla.suse.com/1187054
https://bugzilla.suse.com/1188613
https://bugzilla.suse.com/1190118
https://bugzilla.suse.com/1190127
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