Description
A flaw was found in libgnutls. A remote attacker, by sending an extremely short premaster secret during an RSA key exchange to a server using an RSA key backed by a PKCS#11 token, could trigger a short heap overread. This memory corruption vulnerability could lead to information disclosure.
Problem types
Improper Validation of Specified Quantity in Input
Product status
0:3.8.10-4.el10_2 (rpm) before *
0:3.6.16-8.el8_10.6 (rpm) before *
0:3.6.16-8.el8_10.6 (rpm) before *
0:3.8.10-4.el9_8 (rpm) before *
0:3.8.10-4.el9_8 (rpm) before *
Timeline
| 2026-05-06: | Reported to Red Hat. |
| 2026-04-29: | Made public. |
Credits
Red Hat would like to thank Joshua Rogers (AISLE Research Team) for reporting this issue.
References
access.redhat.com/errata/RHSA-2026:20611 (RHSA-2026:20611)
access.redhat.com/errata/RHSA-2026:20612 (RHSA-2026:20612)
access.redhat.com/errata/RHSA-2026:20613 (RHSA-2026:20613)
access.redhat.com/security/cve/CVE-2026-5260
bugzilla.redhat.com/show_bug.cgi?id=2467450 (RHBZ#2467450)