Security update for the Linux Kernel (Live Patch 25 for SLE 15)

SUSE Security Update: Security update for the Linux Kernel (Live Patch 25 for SLE 15)
Announcement ID: SUSE-SU-2021:3371-1
Rating: important
References: #1187054 #1188613 #1190118 #1190350
Cross-References:CVE-2021-3573 CVE-2021-3640 CVE-2021-3715 CVE-2021-38160
Affected Products:
  • SUSE Linux Enterprise Module for Live Patching 15

An update that fixes four vulnerabilities is now available.

Description:

This update for the Linux Kernel 4.12.14-150_75 fixes several issues.
The following security issues were fixed:

  • CVE-2021-3715: Fixed a user-after-free in the Linux kernel's Traffic Control networking subsystem which could lead to local privilege escalation. (bsc#1190350).
  • 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:
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-2021-3371=1 SUSE-SLE-Module-Live-Patching-15-2021-3372=1

Package List:

  • SUSE Linux Enterprise Module for Live Patching 15 (ppc64le x86_64):
    • kernel-livepatch-4_12_14-150_72-default-7-2.1
    • kernel-livepatch-4_12_14-150_72-default-debuginfo-7-2.1
    • kernel-livepatch-4_12_14-150_75-default-4-2.1
    • kernel-livepatch-4_12_14-150_75-default-debuginfo-4-2.1

References: