SB20251015119 - NULL pointer dereference in Linux kernel ipv4
Published: October 15, 2025
Security Bulletin ID
SB20251015119
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-2025-39980)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the replace_nexthop_single() function in net/ipv4/nexthop.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/0e7bfe7a268ccbd7859730c529161cafbf44637c
- https://git.kernel.org/stable/c/24046d31f6f92220852d393d510b6062843e3fbd
- https://git.kernel.org/stable/c/390b3a300d7872cef9588f003b204398be69ce08
- https://git.kernel.org/stable/c/8dd4aa0122885f710930de135af2adc4ccc3238f
- https://git.kernel.org/stable/c/e1e87ac0daacd51f522ecd1645cd76b5809303ed
- https://git.kernel.org/stable/c/ec428fff792b7bd15b248dafca2e654b666b1304
- https://git.kernel.org/stable/c/f0e49fd13afe9dea7a09a1c9537fd00cea22badb