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SUSE Linux Enterprise Server 15 SP2: 2023:4030-1 High: Kernel Crash Fix

suse
Calendar Grey October 10, 2023
Dist Suse Esm H88
SUSE issues a security patch for the Linux Kernel addressing various vulnerabilities, such as potential system crashes and elevation of privileges.
* #1207036 * #1208995 * #1210169 * #1210643 * #1212703

Summary

## The SUSE Linux Enterprise 15 SP2 kernel was updated to receive various security bugfixes. The following security bugs were fixed: * CVE-2023-4389: Fixed a reference counting issue in the Btrfs filesystem that could be exploited in order to leak internal kernel information or crash the system (bsc#1214351). * CVE-2023-42753: Fixed an array indexing vulnerability in the netfilter subsystem. This issue may have allowed a local user to crash the system or potentially escalate their privileges (bsc#1215150). * CVE-2023-1206: Fixed a hash collision flaw in the IPv6 connection lookup table which could be exploited by network adjacent attackers, increasing CPU usage by 95% (bsc#1212703). * CVE-2023-4921: Fixed a use-after-free vulnerability in the QFQ network

Topics%20covered

Topics Covered

security advisory privilege escalation important system update suse system vulnerabilities kernel crash

References

* #1207036

* #1208995

* #1210169

* #1210643

* #1212703

* #1214233

* #1214351

* #1214380

* #1214386

* #1215115

* #1215117

* #1215150

* #1215221

* #1215275

* #1215299

Cross-

* CVE-2020-36766

* CVE-2023-1192

* CVE-2023-1206

* CVE-2023-1859

* CVE-2023-2177

* CVE-2023-23454

* CVE-2023-40283

* CVE-2023-42753

* CVE-2023-4389

* CVE-2023-4622

* CVE-2023-4623

* CVE-2023-4881

* CVE-2023-4921

CVSS scores:

* CVE-2020-36766 ( SUSE ): 2.5 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

* CVE-2020-36766 ( NVD ): 3.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

* CVE-2023-1192 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

* CVE-2023-1206 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

* CVE-2023-1206 ( NVD ): 5.7 CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2023:4030-1
Rating: important

Topics%20covered

Topics Covered

security advisory privilege escalation important system update suse system vulnerabilities kernel crash

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