SB2024053062 - Memory leak in Linux kernel ipv4
Published: May 30, 2024 Updated: May 14, 2025
Security Bulletin ID
SB2024053062
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Memory leak (CVE-ID: CVE-2021-47304)
CWE-ID: CWE-401 - Missing release of memory after effective lifetime
CVSSv4: 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
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the tcp_init_transfer() function in net/ipv4/tcp_input.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/ad4ba3404931745a5977ad12db4f0c34080e52f7
- https://git.kernel.org/stable/c/fe77b85828ca9ddc42977b79de9e40d18545b4fe
- https://git.kernel.org/stable/c/be5d1b61a2ad28c7e57fe8bfa277373e8ecffcdc
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.53
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.5
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14