Memory leak in Linux kernel - CVE-2021-47024
Published: May 30, 2024 / Updated: May 14, 2025
Vulnerability identifier: #VU90033
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-2021-47024
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 virtio_transport_reset_no_sock(), virtio_transport_do_close() and virtio_transport_close() functions in net/vmw_vsock/virtio_transport_common.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/b605673b523fe33abeafb2136759bcbc9c1e6ebf
- https://git.kernel.org/stable/c/27691665145e74a45034a9dccf1150cf1894763a
- https://git.kernel.org/stable/c/37c38674ef2f8d7e8629e5d433c37d6c1273d16b
- https://git.kernel.org/stable/c/8432b8114957235f42e070a16118a7f750de9d39
- 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