CVE-2025-21788

net: ethernet: ti: am65-cpsw: fix memleak in certain XDP cases

Description

In the Linux kernel, the following vulnerability has been resolved: net: ethernet: ti: am65-cpsw: fix memleak in certain XDP cases If the XDP program doesn't result in XDP_PASS then we leak the memory allocated by am65_cpsw_build_skb(). It is pointless to allocate SKB memory before running the XDP program as we would be wasting CPU cycles for cases other than XDP_PASS. Move the SKB allocation after evaluating the XDP program result. This fixes the memleak. A performance boost is seen for XDP_DROP test. XDP_DROP test: Before: 460256 rx/s 0 err/s After: 784130 rx/s 0 err/s

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.02%
Affected: Linux Linux
Affected: Linux Linux
Published at:
Updated at:

References

Link Tags
https://git.kernel.org/stable/c/1bba1d042107167164a0ae3a843fdf650ab005d7 patch mailing list
https://git.kernel.org/stable/c/dc11f049612b9d926aca2e55f8dc9d82850d0da3 patch mailing list
https://git.kernel.org/stable/c/5db843258de1e4e6b1ef1cbd1797923c9e3de548 patch mailing list

Frequently Asked Questions

What is the severity of CVE-2025-21788?
CVE-2025-21788 has been scored as a medium severity vulnerability.
How to fix CVE-2025-21788?
To fix CVE-2025-21788, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-21788 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-21788 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-21788?
CVE-2025-21788 affects Linux Linux, Linux Linux.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.