What is CVE-2025-21788?

CVE-2025-21788 is a high-severity vulnerability in Linux, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 7.5/10. Published 2025-02-27.

How severe is CVE-2025-21788?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Linux

CVE-2025-21788

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

EPSS: 0.002 (11.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Linux — versions 8acacc40f7337527ff84cd901ed2ef0a2b95b2b6, 6.10, 0
Linux Linux_kernel — versions 6.14

Weakness classification (CWE)

CWE-401 — Missing Release of Memory after Effective Lifetime

References

416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch, Mailing List)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch, Mailing List)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch, Mailing List)

Frequently asked questions

What is CVE-2025-21788?: CVE-2025-21788 is a high-severity vulnerability in Linux, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 7.5/10. Published 2025-02-27.
How severe is CVE-2025-21788?: High severity. CVSS v3 base score is 7.5 out of 10.