Memory leak in Linux kernel - CVE-2019-20096

Vulnerability identifier: #VU30493

CSH Severity: Medium

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2019-20096

CWE-ID: CWE-401

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to memory leak within __feat_register_sp() in net/dccp/feat.c, which may cause denial of service, aka CID-1d3ff0950e2b. A remote attacker can perform a denial of service attack.

Linux kernel
Amazon Linux AMI
Anolis OS
kernel
python3-perf
perf
kernel-tools-libs-devel
kernel-tools-libs
kernel-tools
kernel-modules-extra
kernel-modules
kernel-headers
kernel-debug-modules-extra
kernel-debug-modules
kernel-debug-devel
kernel-debug-core
kernel-debug
kernel-core
bpftool
kernel-devel
python-perf

Update to version 5.1.

Linux kernel - update to 5.1
kernel - addressed in versions 4.19.91-23.4, 4.19.91-26
python3-perf - update to 4.19.91-23.4
perf - addressed in versions 4.19.91-23.4, 4.19.91-26
kernel-tools-libs-devel - addressed in versions 4.19.91-23.4, 4.19.91-26
kernel-tools-libs - addressed in versions 4.19.91-23.4, 4.19.91-26
kernel-tools - addressed in versions 4.19.91-23.4, 4.19.91-26
kernel-modules-extra - update to 4.19.91-23.4
kernel-modules - update to 4.19.91-23.4
kernel-headers - addressed in versions 4.19.91-23.4, 4.19.91-26
kernel-debug-modules-extra - update to 4.19.91-23.4
kernel-debug-modules - update to 4.19.91-23.4
kernel-debug-devel - addressed in versions 4.19.91-23.4, 4.19.91-26
kernel-debug-core - update to 4.19.91-23.4
kernel-debug - addressed in versions 4.19.91-23.4, 4.19.91-26
kernel-core - update to 4.19.91-23.4
bpftool - addressed in versions 4.19.91-23.4, 4.19.91-26
kernel-devel - addressed in versions 4.19.91-23.4, 4.19.91-26
python-perf - update to 4.19.91-26

• http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html
• http://packetstormsecurity.com/files/156455/Kernel-Live-Patch-Security-Notice-LSN-0063-1.html
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1d3ff0950e2b40dc861b1739029649d03f591820
• https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html
• https://usn.ubuntu.com/4285-1/
• https://usn.ubuntu.com/4286-1/
• https://usn.ubuntu.com/4286-2/
• https://usn.ubuntu.com/4287-1/
• https://usn.ubuntu.com/4287-2/

• Multiple vulnerabilities in Linux kernel
• Amazon Linux AMI update for kernel
• Anolis OS update for kernel(ANCK)4.19
• Anolis OS update for kernel(ANCK)4.19