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SUSE: 2018:3880-1 Important: Linux Kernel Denial of Service Issue

suse
Calendar Grey November 23, 2018
Dist Suse Esm H88
Essential security patch for SUSE's Linux Kernel resolves major vulnerabilities in Live Patch 0 for SLE 15 environments.
An update that fixes two vulnerabilities is now available

Summary

This update for the Linux Kernel 4.12.14-23 fixes several issues. The following security issues were fixed: - CVE-2018-5391: Fixed a denial of service attack with low rates of specially modified packets targeting IP fragment re-assembly. An attacker may have caused a denial of service condition by sending specially crafted IP fragments. The current vulnerability (CVE-2018-5391) became exploitable in the Linux kernel with the increase of the IP fragment reassembly queue size (bsc#1103098). - CVE-2018-18386: The drivers/tty/n_tty.c allowed local attackers (who are able to access pseudo terminals) to hang/block further usage of any pseudo terminal devices due to an EXTPROC versus ICANON confusion in TIOCINQ (bsc#1112039). Patch Instructions:

Topics%20covered

Topics Covered

security advisory denial of service SUSE important fix Linux kernel

References

#1103098 #1112039

Cross- CVE-2018-18386 CVE-2018-5391

Affected Products:

SUSE Linux Enterprise Module for Live Patching 15

https://www.suse.com/security/cve/CVE-2018-18386.html

https://www.suse.com/security/cve/CVE-2018-5391.html

https://bugzilla.suse.com/1103098

https://bugzilla.suse.com/1112039

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2018:3880-1
Rating: important

Topics%20covered

Topics Covered

security advisory denial of service SUSE important fix Linux kernel

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