What is CVE-2026-31635?

CVE-2026-31635 is a high-severity vulnerability in Linux, classified under Improper Handling of Length Parameter Inconsistency. CVSS score: 7.5/10. Published 2026-04-24.

How severe is CVE-2026-31635?

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

Is CVE-2026-31635 known to be exploited?

6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Linux

CVE-2026-31635

In the Linux kernel, the following vulnerability has been resolved: rxrpc: fix oversized RESPONSE authenticator length check rxgk_verify_response() decodes auth_len from the packet and is supposed to verify that it fits in the remaining…

EPSS: 0.000 (11.6th 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 9d1d2b59341f58126a69b51f9f5f8ccb9f12e54a, 6.16, 0
Linux Linux_kernel — versions 6.16, 7.0

Weakness classification (CWE)

CWE-130 — Improper Handling of Length Parameter Inconsistency

Public proof-of-concept exploits

References

416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
134c704f-9b21-4f2e-91b3-4a467353bcc0

Frequently asked questions

What is CVE-2026-31635?: CVE-2026-31635 is a high-severity vulnerability in Linux, classified under Improper Handling of Length Parameter Inconsistency. CVSS score: 7.5/10. Published 2026-04-24.
How severe is CVE-2026-31635?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2026-31635 known to be exploited?: 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.