CVE-2025-21788

MediumCVSS 5.5/10Last modified Jul 30, 2026

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

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-401

Affected software

VendorProductVersions
LinuxLinux>= 8acacc40f7337527ff84cd901ed2ef0a2b95b2b6, < 1bba1d042107167164a0ae3a843fdf650ab005d7; >= 8acacc40f7337527ff84cd901ed2ef0a2b95b2b6, < dc11f049612b9d926aca2e55f8dc9d82850d0da3; >= 8acacc40f7337527ff84cd901ed2ef0a2b95b2b6, < 5db843258de1e4e6b1ef1cbd1797923c9e3de548
LinuxLinux6.10

References

Timeline

Published
Feb 27, 2025
Last modified
Jul 30, 2026
NVD status
Modified

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