CVE-2025-40074 Details
Description
In the Linux kernel, the following vulnerability has been resolved: ipv4: start using dst_dev_rcu() Change icmpv4_xrlim_allow(), ip_defrag() to prevent possible UAF. Change ipmr_prepare_xmit(), ipmr_queue_fwd_xmit(), ip_mr_output(), ipv4_neigh_lookup() to use lockdep enabled dst_dev_rcu().
A use-after-free vulnerability has been addressed in the Linux kernel's IPv4 handling. This issue arose from not properly managing reference counts for network devices in certain IPv4 functions, which could potentially lead to accessing freed memory. The vulnerability was mitigated by changing these functions to use a version of the destination device lookup that is safe for concurrent access, thereby preventing the use-after-free condition.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 28, 2025References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/684efb2c86c887685f9aa65e1a21b3df6c1f822d | kernel.org | |
| https://git.kernel.org/stable/c/6ad8de3cefdb6ffa6708b21c567df0dbf82c43a8 | kernel.org | Source CodeVendor |
| https://git.kernel.org/stable/c/923e0734c386984d45de508528a7a7ad91d791cc | kernel.org | Source CodeVendor |
| https://git.kernel.org/stable/c/e150f273cd8ed34ebc6d03758aad95c12fc58337 | kernel.org |
Weakness Enumeration
No weakness enumeration is available for this CVE.
Affected Products
| Product | Versions |
|---|---|
| Linux kernel | All versions |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 14, 2026 | CVE Modified | kernel.org |
| Aug 27, 2026 | CVE Modified | kernel.org |
| Jul 30, 2026 | CVE Modified | kernel.org |
| Jun 17, 2026 | CVE Modified | kernel.org |
| Oct 28, 2025 | New CVE Received | kernel.org |
Volerion