Memory leak in Linux kernel - CVE-2021-47292

Vulnerability identifier: #VU89954

CSH Severity: Low

CVSS v4: 6.8 [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]

CVE-ID: CVE-2021-47292

CWE-ID: CWE-401

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 leak within the io_init_wq_offload() function in fs/io_uring.c. A local user can perform a denial of service (DoS) attack.

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

Install update from vendor's website.

Linux kernel - addressed in versions 5.13.6, 5.14
kernel - update to 5.10.0-136.91.0.172
kernel-debuginfo - update to 5.10.0-136.91.0.172
kernel-debugsource - update to 5.10.0-136.91.0.172
kernel-devel - update to 5.10.0-136.91.0.172
kernel-headers - update to 5.10.0-136.91.0.172
kernel-source - update to 5.10.0-136.91.0.172
kernel-tools - update to 5.10.0-136.91.0.172
kernel-tools-debuginfo - update to 5.10.0-136.91.0.172
kernel-tools-devel - update to 5.10.0-136.91.0.172
perf - update to 5.10.0-136.91.0.172
perf-debuginfo - update to 5.10.0-136.91.0.172
python3-perf - update to 5.10.0-136.91.0.172
python3-perf-debuginfo - update to 5.10.0-136.91.0.172

• https://git.kernel.org/stable/c/502731a03f27cba1513fbbff77e508185ffce5bb
• https://git.kernel.org/stable/c/362a9e65289284f36403058eea2462d0330c1f24
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.6
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14

• Memory leak in Linux kernel fs
• openEuler 22.03 LTS SP1 update for kernel