SB2025091865 - NULL pointer dereference in Linux kernel ipv6
Published: September 18, 2025 Updated: September 22, 2025
Security Bulletin ID
SB2025091865
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-2023-53343)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the icmp6_dev() function in net/ipv6/icmp.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/1462e9d9aa52d14665eaca6d89d22c4af44ede04
- https://git.kernel.org/stable/c/2aaa8a15de73874847d62eb595c6683bface80fd
- https://git.kernel.org/stable/c/3fabca5d9cae0140b6aad09a1c6b9aa57089fbb8
- https://git.kernel.org/stable/c/61b4c4659746959056450b92a5d7e6bc1243b31b
- https://git.kernel.org/stable/c/8803c59fde4dd370a627dfbf7183682fa0cabf70
- https://git.kernel.org/stable/c/aa657d319e6c7502a4eb85cc0ee80cc81b8e5724
- https://git.kernel.org/stable/c/d30ddd7ff15df9d91a793ce3f06f0190ff7afacc
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.188