CVE-2021-47466

MEDIUM

Linux Kernel 4.8-5.4.156 - Use-After-Free in SLUB Cache Error Path

Title source: llm

Description

In the Linux kernel, the following vulnerability has been resolved: mm, slub: fix potential memoryleak in kmem_cache_open() In error path, the random_seq of slub cache might be leaked. Fix this by using __kmem_cache_release() to release all the relevant resources.

References (4)

Core 4

Core References

Patch

https://git.kernel.org/stable/c/4f5d1c29cfab5cb0ab885059818751bdef32e2bb

Patch

https://git.kernel.org/stable/c/568f906340b43120abd6fcc67c37396482f85930

Patch

https://git.kernel.org/stable/c/42b81946e3ac9ea0372ba16e05160dc11e02694f

Patch

https://git.kernel.org/stable/c/9037c57681d25e4dcc442d940d6dbe24dd31f461

Scores

CVSS v3 5.5

EPSS 0.0021

EPSS Percentile 11.0%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-401

Status published

Products (12)

Linux/Linux < 4.8

Linux/Linux 210e7a43fa905bccafa9bb5966fba1d71f33eb8b - 42b81946e3ac9ea0372ba16e05160dc11e02694f

Linux/Linux 210e7a43fa905bccafa9bb5966fba1d71f33eb8b - 4f5d1c29cfab5cb0ab885059818751bdef32e2bb

Linux/Linux 210e7a43fa905bccafa9bb5966fba1d71f33eb8b - 568f906340b43120abd6fcc67c37396482f85930

Linux/Linux 210e7a43fa905bccafa9bb5966fba1d71f33eb8b - 9037c57681d25e4dcc442d940d6dbe24dd31f461

Linux/Linux 4.8

Linux/Linux 5.10.76 - 5.10.*

Linux/Linux 5.14.15 - 5.14.*

Linux/Linux 5.15

Linux/Linux 5.4.156 - 5.4.*

... and 2 more

Published May 22, 2024

Tracked Since Feb 18, 2026