CVE-2021-29649 — Missing Release of Memory after Effective Lifetime in Kernel

CWE-401 — Missing Release of Memory after Effective LifetimeCWE-459 — Incomplete Cleanup8 documents7 sources
Severity
5.5MEDIUMNVD
OSV7.8
EPSS
0.1%
top 69.46%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
9
Linux KernelDebian LinuxFedoraproject Fedora+6 more
Timeline
PublishedMar 30
Latest updateMay 24

Description

An issue was discovered in the Linux kernel before 5.11.11. The user mode driver (UMD) has a copy_process() memory leak, related to a lack of cleanup steps in kernel/usermode_driver.c and kernel/bpf/preload/bpf_preload_kern.c, aka CID-f60a85cad677.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages9 packages

▶NVDlinux/linux_kernel< 5.11.11
▶Debianlinux/linux_kernel< 5.10.28-1+3
▶debiandebian/linux< linux 5.10.28-1 (bookworm)

Also affects: Fedora 32, 33, 34

Patches

Patch: cdn.kernel.org ↗Patch: git.kernel.org ↗Patch: cdn.kernel.org ↗

🔴Vulnerability Details

3
GHSA
GHSA-vqfm-ggp3-m2h4: An issue was discovered in the Linux kernel before 5↗2022-05-24
▶
OSV
linux-oem-5.10 vulnerabilities↗2021-05-11
▶
OSV
CVE-2021-29649: An issue was discovered in the Linux kernel before 5↗2021-03-30
▶

📋Vendor Advisories

4
Ubuntu
Linux kernel (OEM) vulnerabilities↗2021-05-11
▶
Red Hat
kernel: memory leak in user mode driver due to lack of cleanup steps in kernel/usermode_driver.c and kernel/bpf/preload/bpf_preload_kern.c↗2021-03-19
▶
Microsoft
An issue was discovered in the Linux kernel before 5.11.11. The user mode driver (UMD) has a copy_process() memory leak related to a lack of cleanup steps in kernel/usermode_driver.c and kernel/bpf/pr↗2021-03-09
▶
Debian
CVE-2021-29649: linux - An issue was discovered in the Linux kernel before 5.11.11. The user mode driver...↗2021
▶