Linux kernel before 5.0.11 Integer Overflow or Wraparound Vulnerability

Summary

Linux kernel before 5.0.11 suffers from integer overflow or wraparound vulnerability

 

Credit:

The information has been provided by Greg Kroah-Hartman

The original article can be found at:https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.11

 


Details

An issue was discovered in net/ipv4/sysctl_net_ipv4.c in the Linux kernel before 5.0.11. There is a net/ipv4/tcp_input.c signed integer overflow in tcp_ack_update_rtt() when userspace writes a very large integer to /proc/sys/net/ipv4/tcp_min_rtt_wlen, leading to a denial of service or possibly unspecified other impact, aka CID-19fad20d15a6.

 

Vulnerable Systems:

Linux kernel before 5.0.11

 

CVE Information:

CVE-2019-18805

 

Disclosure Timeline:
Published Date:11/7/2019