Arch Linux Security Advisory ASA-201905-4

Severity: High
Date : 2019-05-06
CVE-ID : CVE-2019-11683
Package : linux-zen
Type : arbitrary code execution
Remote : Yes
Link : https://security.archlinux.org/AVG-957

Summary

The package linux-zen before version 5.0.12.zen2-1 is vulnerable to
arbitrary code execution.

Resolution

Upgrade to 5.0.12.zen2-1.

pacman -Syu “linux-zen>=5.0.12.zen2-1”

The problem has been fixed upstream in version 5.0.12.zen2.

Workaround

None.

Description

udp_gro_receive_segment in net/ipv4/udp_offload.c in the Linux kernel
5.x through 5.0.11 allows remote attackers to cause a denial of service
(slab-out-of-bounds memory corruption) or possibly have unspecified
other impact via UDP packets with a 0 payload, because of mishandling
of padded packets, aka the “GRO packet of death” issue.

Impact

A remote attacker is able to cause a denial of service possibly leading
to remote code execution by sending UDP packets with a special payload.

References

https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/?id=4dd2b82d5adfbe0b1587ccad7a8f76d826120f37
http://www.securityfocus.com/bid/108142
http://www.openwall.com/lists/oss-security/2019/05/05/4
http://www.openwall.com/lists/oss-security/2019/05/02/1
https://security.archlinux.org/CVE-2019-11683