SB20250619246 - NULL pointer dereference in Linux kernel trace
Published: June 19, 2025 Updated: June 21, 2025
Security Bulletin ID
SB20250619246
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) NULL pointer dereference (CVE-ID: CVE-2022-49977)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the ftrace_startup() function in kernel/trace/ftrace.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/4c34a2a6c9927c239dd2e295a03d49b37b618d2c
- https://git.kernel.org/stable/c/8569b4ada1e0b9bfaa125bd0c0967918b6560fa2
- https://git.kernel.org/stable/c/934e49f7d696afdae9f979abe3f308408184e17b
- https://git.kernel.org/stable/c/c3b0f72e805f0801f05fa2aa52011c4bfc694c44
- https://git.kernel.org/stable/c/d81bd6671f45fde4c3ac7fd7733c6e3082ae9d8e
- https://git.kernel.org/stable/c/dbd8c8fc60480e3faa3ae7e27ebe03371ecd1b77
- https://git.kernel.org/stable/c/ddffe882d74ef43a3494f0ab0c24baf076c45f96
- https://git.kernel.org/stable/c/e4ae97295984ff1b9b340ed18ae1b066f36b7835
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.65