Improper handling of exceptional conditions in Linux kernel - CVE-2021-46928

Vulnerability identifier: #VU89265

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-2021-46928

CWE-ID: CWE-755

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 improper handling of errors within the handle_interruption() function in arch/parisc/kernel/traps.c. A local user can send specially crafted input and perform a denial of service (DoS) attack.

Linux kernel
openEuler
bpftool
kernel
kernel-devel
perf-debuginfo
perf
python2-perf
kernel-source
python3-perf-debuginfo
python3-perf
kernel-tools-debuginfo
kernel-tools
kernel-tools-devel
python2-perf-debuginfo
kernel-debugsource
kernel-debuginfo
bpftool-debuginfo

Install updates from vendor's website.

Linux kernel - addressed in versions 5.10.90, 5.15.13, 5.16
bpftool - addressed in versions 4.19.90-2404.1.0.0245, 4.19.90-2404.1.0.0272
kernel - addressed in versions 4.19.90-2404.1.0.0245, 4.19.90-2404.1.0.0272
kernel-devel - addressed in versions 4.19.90-2404.1.0.0245, 4.19.90-2404.1.0.0272
perf-debuginfo - addressed in versions 4.19.90-2404.1.0.0245, 4.19.90-2404.1.0.0272
perf - addressed in versions 4.19.90-2404.1.0.0245, 4.19.90-2404.1.0.0272
python2-perf - addressed in versions 4.19.90-2404.1.0.0245, 4.19.90-2404.1.0.0272
kernel-source - addressed in versions 4.19.90-2404.1.0.0245, 4.19.90-2404.1.0.0272
python3-perf-debuginfo - addressed in versions 4.19.90-2404.1.0.0245, 4.19.90-2404.1.0.0272
python3-perf - addressed in versions 4.19.90-2404.1.0.0245, 4.19.90-2404.1.0.0272
kernel-tools-debuginfo - addressed in versions 4.19.90-2404.1.0.0245, 4.19.90-2404.1.0.0272
kernel-tools - addressed in versions 4.19.90-2404.1.0.0245, 4.19.90-2404.1.0.0272
kernel-tools-devel - addressed in versions 4.19.90-2404.1.0.0245, 4.19.90-2404.1.0.0272
python2-perf-debuginfo - addressed in versions 4.19.90-2404.1.0.0245, 4.19.90-2404.1.0.0272
kernel-debugsource - addressed in versions 4.19.90-2404.1.0.0245, 4.19.90-2404.1.0.0272
kernel-debuginfo - addressed in versions 4.19.90-2404.1.0.0245, 4.19.90-2404.1.0.0272
bpftool-debuginfo - addressed in versions 4.19.90-2404.1.0.0245, 4.19.90-2404.1.0.0272

• https://git.kernel.org/stable/c/d01e9ce1af6116f812491d3d3873d204f10ae0b8
• https://git.kernel.org/stable/c/e96373f0a5f484bc1e193f9951dcb3adf24bf3f7
• https://git.kernel.org/stable/c/484730e5862f6b872dca13840bed40fd7c60fa26
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.90
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.13
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16

• Denial of service in Linux kernel parisc
• openEuler 20.03 LTS SP1 update for kernel
• openEuler 20.03 LTS SP4 update for kernel