SB2024060491 - Out-of-bounds read in Linux kernel mptcp
Published: June 4, 2024 Updated: May 13, 2025
Security Bulletin ID
SB2024060491
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 security vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2021-47244)
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 mptcp_get_options() function in net/mptcp/options.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/73eeba71dc9932970befa009e68272a3d5ec4a58
- https://git.kernel.org/stable/c/76e02b8905d0691e89e104a882f3bba7dd0f6037
- https://git.kernel.org/stable/c/07718be265680dcf496347d475ce1a5442f55ad7
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.46
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.13
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13