Out-of-bounds read in Linux kernel - CVE-2021-47274
Published: May 31, 2024 / Updated: May 14, 2025
Vulnerability identifier: #VU90294
CSH Severity: Low
CVSSv4.0: 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-2021-47274
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to an out-of-bounds read error within the trace_event_buffer_lock_reserve() function in kernel/trace/trace.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
External links
- https://git.kernel.org/stable/c/edcce01e0e50840a9aa6a70baed21477bdd2c9f9
- https://git.kernel.org/stable/c/2d598902799886d67947406f26ee8e5fd2ca097f
- https://git.kernel.org/stable/c/31ceae385556c37e4d286cb6378696448f566883
- https://git.kernel.org/stable/c/d63f00ec908b3be635ead5d6029cc94246e1f38d
- https://git.kernel.org/stable/c/43c32c22254b9328d7abb1c2b0f689dc67838e60
- https://git.kernel.org/stable/c/b16a249eca2230c2cd66fa1d4b94743bd9b6ef92
- https://git.kernel.org/stable/c/3e08a9f9760f4a70d633c328a76408e62d6f80a3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.237
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.195
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.273
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.44
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.11
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.126