Description
A flaw was found in the X Record extension. The RecordSanityCheckRegisterClients function does not check for an integer overflow when computing request length, which allows a client to bypass length checks.
References10
- access.redhat.com/errata/RHSA-2025:10258
- access.redhat.com/errata/RHSA-2025:10342
- access.redhat.com/errata/RHSA-2025:10343
- access.redhat.com/errata/RHSA-2025:10344
- access.redhat.com/errata/RHSA-2025:10346
- access.redhat.com/errata/RHSA-2025:10347
- access.redhat.com/errata/RHSA-2025:10348
- access.redhat.com/errata/RHSA-2025:10349
- access.redhat.com/errata/RHSA-2025:10350
- access.redhat.com/errata/RHSA-2025:10351
Metrics
- CVSS 3.1
-
7.3
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H - EPSS — exploit probability
- 0% percentile: 28 · as of 7 November 2026
- CWE
- CWE-190
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.