SB2024060549 - Buffer overflow in Linux kernel net
Published: June 5, 2024 Updated: May 13, 2025
Security Bulletin ID
SB2024060549
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Buffer overflow (CVE-ID: CVE-2021-47496)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to memory corruption within the tls_err_abort(), tls_tx_records(), tls_push_record(), tls_sw_recvmsg() and tls_sw_splice_read() functions in net/tls/tls_sw.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/e0cfd5159f314d6b304d030363650b06a2299cbb
- https://git.kernel.org/stable/c/f3dec7e7ace38224f82cf83f0049159d067c2e19
- https://git.kernel.org/stable/c/e41473543f75f7dbc5d605007e6f883f1bd13b9a
- https://git.kernel.org/stable/c/da353fac65fede6b8b4cfe207f0d9408e3121105
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.77
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.16
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.157