Buffer overflow in Linux kernel - CVE-2021-47036

Vulnerability identifier: #VU93164

CSH Severity: Low

CVSS v4 BT: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-47036

CWE-ID: CWE-119

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to memory corruption within the udp_gro_receive() function in net/ipv4/udp_offload.c. A local user can perform a denial of service (DoS) attack.

Linux kernel
openEuler
perf-debuginfo
python3-perf
kernel-devel
python3-perf-debuginfo
perf
kernel-headers
kernel-tools-devel
kernel-source
kernel-debuginfo
bpftool-debuginfo
kernel-tools
bpftool
kernel-tools-debuginfo
kernel-debugsource
kernel

Install update from vendor's website.

Linux kernel - addressed in versions 5.12.4, 5.13
perf-debuginfo - addressed in versions 5.10.0-60.131.0.158, 5.10.0-136.69.0.149, 5.10.0-153.48.0.126, 5.10.0-193.0.0.106
python3-perf - addressed in versions 5.10.0-60.131.0.158, 5.10.0-136.69.0.149, 5.10.0-153.48.0.126, 5.10.0-193.0.0.106
kernel-devel - addressed in versions 5.10.0-60.131.0.158, 5.10.0-136.69.0.149, 5.10.0-153.48.0.126, 5.10.0-193.0.0.106
python3-perf-debuginfo - addressed in versions 5.10.0-60.131.0.158, 5.10.0-136.69.0.149, 5.10.0-153.48.0.126, 5.10.0-193.0.0.106
perf - addressed in versions 5.10.0-60.131.0.158, 5.10.0-136.69.0.149, 5.10.0-153.48.0.126, 5.10.0-193.0.0.106
kernel-headers - addressed in versions 5.10.0-60.131.0.158, 5.10.0-136.69.0.149, 5.10.0-153.48.0.126, 5.10.0-193.0.0.106
kernel-tools-devel - addressed in versions 5.10.0-60.131.0.158, 5.10.0-136.69.0.149, 5.10.0-153.48.0.126, 5.10.0-193.0.0.106
kernel-source - addressed in versions 5.10.0-60.131.0.158, 5.10.0-136.69.0.149, 5.10.0-153.48.0.126, 5.10.0-193.0.0.106
kernel-debuginfo - addressed in versions 5.10.0-60.131.0.158, 5.10.0-136.69.0.149, 5.10.0-153.48.0.126, 5.10.0-193.0.0.106
bpftool-debuginfo - update to 5.10.0-60.131.0.158
kernel-tools - addressed in versions 5.10.0-60.131.0.158, 5.10.0-136.69.0.149, 5.10.0-153.48.0.126, 5.10.0-193.0.0.106
bpftool - update to 5.10.0-60.131.0.158
kernel-tools-debuginfo - addressed in versions 5.10.0-60.131.0.158, 5.10.0-136.69.0.149, 5.10.0-153.48.0.126, 5.10.0-193.0.0.106
kernel-debugsource - addressed in versions 5.10.0-60.131.0.158, 5.10.0-136.69.0.149, 5.10.0-153.48.0.126, 5.10.0-193.0.0.106
kernel - addressed in versions 5.10.0-60.131.0.158, 5.10.0-136.69.0.149, 5.10.0-153.48.0.126, 5.10.0-193.0.0.106

• https://git.kernel.org/stable/c/450687386cd16d081b58cd7a342acff370a96078
• https://git.kernel.org/stable/c/18f25dc399901426dff61e676ba603ff52c666f7
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.4
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13

• Buffer overflow in Linux kernel ipv4
• openEuler 22.03 LTS SP3 update for kernel
• openEuler 22.03 LTS update for kernel
• openEuler 22.03 LTS SP1 update for kernel
• openEuler 22.03 LTS SP2 update for kernel