CVE-2026-112319
Krb5: mit krb5 kadmind authenticated memory exhaustion dos via unbounded rpc xdr allocation
The GSS-RPC layer in MIT Kerberos 5 (aka krb5) does not enforce size limits on XDR-decoded data, which allows remote authenticated users to cause a denial of service (memory exhaustion or excessive CPU consumption in kadmind) via crafted RPC requests that trigger unbounded memory allocations during XDR decoding.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
What each source reports
CVE List Score used
Krb5: mit krb5 kadmind authenticated memory exhaustion dos via unbounded rpc xdr allocation
The GSS-RPC layer in MIT Kerberos 5 (aka krb5) does not enforce size limits on XDR-decoded data, which allows remote authenticated users to cause a denial of service (memory exhaustion or excessive CPU consumption in kadmind) via crafted RPC requests that trigger unbounded memory allocations during XDR decoding.
- Record
CVE-2026-112319- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-770
- Updated
- 2026-11-09
EUVDEUVD-2026-120235
The GSS-RPC layer in MIT Kerberos 5 (aka krb5) does not enforce size limits on XDR-decoded data, which allows remote authenticated users to cause a denial of service (memory exhaustion or excessive CPU consumption in kadmind) via crafted RPC requests that trigger unbounded memory allocations during XDR decoding.
- Record
EUVD-2026-120235- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-09
GitHub AdvisoriesGHSA-c6m7-hx4w-rj9w
The GSS-RPC layer in MIT Kerberos 5 (aka krb5) does not enforce size limits on XDR-decoded data,...
The GSS-RPC layer in MIT Kerberos 5 (aka krb5) does not enforce size limits on XDR-decoded data, which allows remote authenticated users to cause a denial of service (memory exhaustion or excessive CPU consumption in kadmind) via crafted RPC requests that trigger unbounded memory allocations during XDR decoding.
- Record
GHSA-c6m7-hx4w-rj9w- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-770
- Updated
- 2026-11-09
NVD
The GSS-RPC layer in MIT Kerberos 5 (aka krb5) does not enforce size limits on XDR-decoded data, which allows remote authenticated users to cause a denial of service (memory exhaustion or excessive CPU consumption in kadmind) via crafted RPC requests that trigger unbounded memory allocations during XDR decoding.
- Record
CVE-2026-112319- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-770
- Updated
- 2026-11-09
OSVALPINE-CVE-2026-112319
The GSS-RPC layer in MIT Kerberos 5 (aka krb5) does not enforce size limits on XDR-decoded data, which allows remote authenticated users to cause a denial of service (memory exhaustion or excessive CPU consumption in kadmind) via crafted RPC requests that trigger unbounded memory allocations during XDR decoding.
- Record
ALPINE-CVE-2026-112319- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-10
OSVDEBIAN-CVE-2026-112319
The GSS-RPC layer in MIT Kerberos 5 (aka krb5) does not enforce size limits on XDR-decoded data, which allows remote authenticated users to cause a denial of service (memory exhaustion or excessive CPU consumption in kadmind) via crafted RPC requests that trigger unbounded memory allocations during XDR decoding.
- Record
DEBIAN-CVE-2026-112319- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-10
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
krb5Alpine:v3.24 |
before 1.22.3-r0 | 1.22.3-r0 |
krb5Debian:12 |
All versions, plus listed versions 1.20.1-21.20.1-2+deb12u11.20.1-2+deb12u21.20.1-2+deb12u31.20.1-2+deb12u4 Show 18 moreShow less1.20.1-2+deb12u51.20.1-2+loong641.20.1-31.20.1-41.20.1-51.20.1-5.11.20.1-5.1~exp11.20.1-61.21.2-11.21.3-11.21.3-21.21.3-31.21.3-41.21.3-51.22.1-11.22.1-21.22.1-2.11.22.1-3 |
None known |
krb5Debian:13 |
All versions, plus listed versions 1.21.3-51.21.3-5+deb13u11.22.1-11.22.1-21.22.1-2.11.22.1-3 |
None known |
krb5Debian:14 |
All versions, plus listed versions 1.21.3-51.22.1-11.22.1-21.22.1-2.11.22.1-3 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, aliases, facts, references | OSV | |
| affected, aliases, references | OSV | |
| published | EUVD | |
| published | EUVD, NVD | |
| aliases, references | GitHub Advisories | |
| cwes, products, references, severity, title | CVE List | |
| first indexed | EUVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-112319 is a medium vulnerability (CVSS 6.5) in Red Hat Enterprise Linux 10, published November 9, 2026. No source lists public exploit code. Fixed in krb5 1.22.3-r0.