Linux · Rocky Linux · Security advisory · May 28, 2026

RLSA-2026:19357: krb5 security update

RLSA-2026:19357, released May 28, 2026, fixes 2 CVEs in krb5 (version 0:1.21.1-10.el9_8). None of them is reported as exploited. Patch Radar priority: High.

High
CVEs closed
2
None rated Critical
Exploited
0
None reported
Highest CVSS
7.5
Base score, 0 to 10
Highest EPSS
0.0065
51st percentile

Priority of the 2 CVEs

Patch now 0 Urgent 0 High 2 Routine 0

Fixed package versions

ProductReleaseFixed in
krb5rocky 90:1.21.1-10.el9_8

CVEs this fix closes

PriorityCVETitleCVSSEPSSExploitation
High CVE-2026-40355 krb5-admin-server: In MIT Kerberos 5 (aka krb5) before 1.22.3, there is a NULL pointer dereference if an application calls gss_accept_se...7.5 0.0065 None reported
High CVE-2026-40356 krb5-admin-server: In MIT Kerberos 5 (aka krb5) before 1.22.3, there is an integer underflow and resultant out-of-bounds read if an appl...7.5 0.0060 None reported
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