CVE-2026-112321: Red Hat Enterprise Linux 10 · Missing Release of Resource after Effective Lifetime
Affects Red Hat Enterprise Linux 10Source CVE Database V5
Not known to be exploited · CVSS 7.5 High.
Data as of 9 Nov 2026, 20:32 UTC
Thin evidence
One scorer or none| CNA (redhat) | CVSS 3.1 | 7.5 |
|---|
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 9 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 9 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 10krb5 | Affected– | Fixed in– |
| Red Hat Enterprise Linux 6krb5 | Affected– | Fixed in– |
| Red Hat Enterprise Linux 7krb5 | Affected– | Fixed in– |
| Red Hat Enterprise Linux 8krb5 | Affected– | Fixed in– |
| Red Hat Enterprise Linux 9krb5 | Affected– | Fixed in– |
| Red Hat Hardened Imageskrb5 | Affected– | Fixed in– |
AI-suggested
Restrict network access to the kadmind service to trusted hosts only. Alternatively, disable kadmind and use the kadmin.local server-side command line tool for administrative operations if feasible. These mitigations reduce exposure by limiting access to vulnerable services.
Description
CVE-2026-112321 is a vulnerability in the AUTH_GSSAPI handler of MIT Kerberos 5 used in Red Hat Enterprise Linux 10. It causes a denial of service by not freeing decoded arguments on certain error paths, leading to memory exhaustion in the kadmind service when processing crafted authentication requests. The issue affects administrative services processing legacy RPC authentication but does not impact standard Kerberos KDC authentication traffic. Exposure is limited to environments where kadmind is accessible from untrusted networks.