SB2025072920 - Use-after-free in Linux kernel net netfilter
Published: July 29, 2025
Security Bulletin ID
SB2025072920
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2025-38472)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the nf_ct_resolve_clash_harder(), __nf_conntrack_confirm() and __nf_conntrack_insert_prepare() functions in net/netfilter/nf_conntrack_core.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/2d72afb340657f03f7261e9243b44457a9228ac7
- https://git.kernel.org/stable/c/76179961c423cd698080b5e4d5583cf7f4fcdde9
- https://git.kernel.org/stable/c/938ce0e8422d3793fe30df2ed0e37f6bc0598379
- https://git.kernel.org/stable/c/a47ef874189d47f934d0809ae738886307c0ea22
- https://git.kernel.org/stable/c/fc38c249c622ff5e3011b8845fd49dbfd9289afc