#VU93766 Memory leak in Linux kernel - CVE-2021-47032
Published: July 4, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU93766
Vulnerability risk: 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-2021-47032
CWE-ID: CWE-401
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 memory leak within the mt7915_txp_skb_unmap() function in drivers/net/wireless/mediatek/mt76/mt7915/mac.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/4e7914ce23306b28d377ec395e00e5fde0e6f96e
- https://git.kernel.org/stable/c/4a9dcd6efb2a268fc5707dcfb3b0c412975c4462
- https://git.kernel.org/stable/c/e2cdc9cb33c5963efe1a7c022753386f9463d1b7
- https://git.kernel.org/stable/c/7dcf3c04f0aca746517a77433b33d40868ca4749
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.37
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.21
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.4
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13