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SUSE: 2021:2415-1 Important: Kernel Heap Overflow and Buffer Issues

suse
Calendar Grey July 20, 2021
Dist Suse Esm H88
Essential SUSE Linux kernel security patch tackles severe heap and buffer vulnerabilities, providing fixes and detailed guidelines.
An update that fixes two vulnerabilities is now available

Summary

The SUSE Linux Enterprise 15 SP3 kernel was updated to receive various security and bugfixes. Security issues fixed: - CVE-2021-22555: A heap out-of-bounds write was discovered in net/netfilter/x_tables.c (bnc#1188116). - CVE-2021-33909: Extremely large seq buffer allocations in seq_file could lead to buffer underruns and code execution (bsc#1188062). The following non-security bugs were fixed: - usb: dwc3: Fix debugfs creation flow (git-fixes).

Topics%20covered

Topics Covered

security advisory kernel patch heap overflow SUSE Linux important update buffer issue

References

#1188062 #1188116

Cross- CVE-2021-22555 CVE-2021-33909

CVSS scores:

CVE-2021-22555 (NVD) : 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVE-2021-22555 (SUSE): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVE-2021-33909 (SUSE): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Products:

SUSE Linux Enterprise Workstation Extension 15-SP3

SUSE Linux Enterprise Module for Live Patching 15-SP3

SUSE Linux Enterprise Module for Legacy Software 15-SP3

SUSE Linux Enterprise Module for Development Tools 15-SP3

SUSE Linux Enterprise Module for Basesystem 15-SP3

SUSE Linux Enterprise High Availability 15-SP3

https://www.suse.com/security/cve/CVE-2021-22555.html

https://www.suse.com/security/cve/CVE-2021-33909.html

https://bugzilla.suse.com/1188062

Severity
important
Lowest
Low
Medium
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Critical

Announcement ID: SUSE-SU-2021:2415-1
Rating: important

Topics%20covered

Topics Covered

security advisory kernel patch heap overflow SUSE Linux important update buffer issue

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