CVE-2023-36054 Use after free in n/a

What is CVE-2023-36054?

CVE-2023-36054 is a medium-severity use after free vulnerability in Debian Debian Linux, published on 7 Aug 2023. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

lib/kadm5/kadm_rpc_xdr.c in MIT Kerberos 5 (aka krb5) before 1.20.2 and 1.21.x before 1.21.1 frees an uninitialized pointer. A remote authenticated user can trigger a kadmind crash. This occurs because _xdr_kadm5_principal_ent_rec does not validate the relationship between n_key_data and the key_data array count.

Weakness: CWE-824

Which versions are affected by CVE-2023-36054?

It affects 7 products.

Products include Debian Debian Linux, Mit Kerberos 5, Netapp Active Iq Unified Manager, Netapp Clustered Data Ontap, Netapp Hci, Netapp Management Services for Element Software and 1 more.

How do I fix CVE-2023-36054?

Upgrade to a fixed version.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2023-36054 being exploited?

There is no known exploitation of CVE-2023-36054 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as ALPINE-CVE-2023-36054, AZL-27874, BELL-CVE-2023-36054, CLSA-2023-1700160468, CLSA-2023-1700161076, CLSA-2024-1720178212 and 18 more.