SB2025091996 - NULL pointer dereference in Linux kernel core
Published: September 19, 2025 Updated: September 22, 2025
Security Bulletin ID
SB2025091996
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-2022-50409)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the sk_stream_wait_memory() function in net/core/stream.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/124b7c773271f06af5a2cea694b283cdb5275cf5
- https://git.kernel.org/stable/c/1f48ab20b80f39c0d85119243109d02946fde6d5
- https://git.kernel.org/stable/c/35f5e70bdfa7432762ac4ffa75e5a7574ac5563e
- https://git.kernel.org/stable/c/3f8ef65af927db247418d4e1db49164d7a158fc5
- https://git.kernel.org/stable/c/435f5aa4421782af197b98d8525263977be4af5c
- https://git.kernel.org/stable/c/5fe03917bb017d9af68a95f989f1c122eebc69a6
- https://git.kernel.org/stable/c/65029aaedd15d9fe5ea1a899134e236d83f627bb
- https://git.kernel.org/stable/c/a76462dbdd8bddcbeec9463bc9e54e509b860762
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.220