Race Condition Affecting kernel-debuginfo package, versions <0:4.14.114-105.126.amzn2

Note: Versions mentioned in the description apply only to the upstream kernel-debuginfo package and not the kernel-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

An issue was discovered in rds_tcp_kill_sock in net/rds/tcp.c in the Linux kernel before 5.0.8. There is a race condition leading to a use-after-free, related to net namespace cleanup.

• http://www.securityfocus.com/bid/108283
• https://seclists.org/bugtraq/2019/Jun/26
• https://security.netapp.com/advisory/ntap-20190719-0003/
• https://support.f5.com/csp/article/K32019083
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11815
• https://www.debian.org/security/2019/dsa-4465
• http://packetstormsecurity.com/files/153799/Kernel-Live-Patch-Security-Notice-LSN-0053-1.html
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.8
• https://github.com/torvalds/linux/commit/cb66ddd156203daefb8d71158036b27b0e2caf63
• https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cb66ddd156203daefb8d71158036b27b0e2caf63
• https://lists.debian.org/debian-lts-announce/2019/06/msg00011.html
• http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00037.html
• http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00043.html
• http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00071.html
• https://usn.ubuntu.com/4005-1/
• https://usn.ubuntu.com/4008-1/
• https://usn.ubuntu.com/4008-3/
• https://usn.ubuntu.com/4068-1/
• https://usn.ubuntu.com/4068-2/
• https://usn.ubuntu.com/4118-1/