SUSE: 2019:1889-1 Important: Kernel Live Patch 0 Denial Of Service
suse
July 18, 2019
An update that fixes two vulnerabilities is now available
Summary
This update for the Linux Kernel 4.12.14-195 fixes several issues. The following security issues were fixed: - CVE-2019-11477: Jonathan Looney discovered that the TCP_SKB_CB(skb)->tcp_gso_segs value was subject to an integer overflow when handling TCP Selective Acknowledgments (SACKs). A remote attacker could use this to cause a denial of service. (bsc#1137586) - CVE-2019-11478: Jonathan Looney discovered that the TCP retransmission queue implementation in tcp_fragment could be fragmented when handling certain TCP Selective Acknowledgment (SACK) sequences. A remote attacker could use this to cause a denial of service. (bsc#1137586) This update contains a regression fix for CVE-2019-11477 and CVE-2019-11478 (bsc#1140747). Patch Instructions:
Topics Covered
References
#1137597 #1140747
Cross- CVE-2019-11477 CVE-2019-11478
Affected Products:
SUSE Linux Enterprise Module for Live Patching 15-SP1
https://www.suse.com/security/cve/CVE-2019-11477.html
https://www.suse.com/security/cve/CVE-2019-11478.html
https://bugzilla.suse.com/1137597
https://bugzilla.suse.com/1140747
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Announcement ID: SUSE-SU-2019:1889-1
Rating: important
Topics Covered
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