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SUSE Linux 15 SP3: 2021:3360-1 Important Live Patch for Kernel

suse
Calendar Grey October 12, 2021
Scroller Suse
This Ubuntu security patch tackles severe vulnerabilities within the Linux Kernel, improving both system reliability and overall protection.
An update that fixes four vulnerabilities is now available

Summary

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

Topics%20covered

Topics Covered

security advisory security update local privilege escalation important data corruption linux kernel live patch

References

#1187054 #1188613 #1190118 #1190127

Cross- 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

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

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2021:3360-1
Rating: important

Topics%20covered

Topics Covered

security advisory security update local privilege escalation important data corruption linux kernel live patch

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