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krb5

Multiple memory leak vulnerabilities have been identified in the krb5 component of Red Hat Enterprise Linux versions 8 and 9. These vulnerabilities affect various parts of the Kerberos implementation, including RPC and GSSAPI modules. The issues have been assigned CVE identifiers CVE-2024-26458, CVE-2024-26461, and CVE-2024-26462. Red Hat has released security updates addressing these memory leaks. The security impact is rated as low to moderate, and no known exploits are reported in the wild.

Red Hat has released security advisories addressing multiple memory leak vulnerabilities in the krb5 network authentication system. The issues occur in the source files /krb5/src/lib/rpc/pmap_rmt.c (CVE-2024-26458), /krb5/src/lib/gssapi/krb5/k5sealv3.c (CVE-2024-26461), and /krb5/src/kdc/ndr.c (CVE-2024-26462). These memory leaks could potentially affect the stability of Kerberos services by consuming system memory over time. The advisories cover Red Hat Enterprise Linux 8 and 9, including various architectures such as x86_64, s390x, ppc64le, and aarch64. Updated krb5 packages have been released to fix these issues, and the updates include automatic restarts of Kerberos services to apply the fixes.

Detailed information about Red Hat Security Advisory: krb5 security update affecting Red Hat Product Security Red Hat. Get real-time updates, technical details,

Red Hat Security Advisory: krb5 security update - Live Threat Intelligence - Threat Radar | OffSeq.com

https://access.redhat.com/errata/RHSA-2024:9331

https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/9/html/9.5_release_notes/index

https://access.redhat.com/security/updates/classification/#moderate

2266731

2266740

2266742

Canonical URL

https://access.redhat.com/errata/RHSA-2024:3268

https://access.redhat.com/security/updates/classification/#low

RHEL-17131

Red Hat Security Advisory: krb5 security update

Kerberos 5 (aka krb5) 1.21.2 contains a memory leak vulnerability in /krb5/src/lib/gssapi/krb5/k5sealv3.c.

CVE-2024-26461 identifies a memory leak vulnerability in the Kerberos 5 (krb5) authentication protocol implementation, specifically in version 1.21.2 within the source file k5sealv3.c of the GSSAPI library. Kerberos is a widely used network authentication protocol that provides secure identity verification for users and services in enterprise and government networks. The vulnerability is categorized under CWE-770, which pertains to allocation of resources without limits or throttling, leading to resource exhaustion. The memory leak occurs when the vulnerable code improperly manages memory allocations during cryptographic sealing operations, causing the process to consume increasing amounts of memory over time. This can lead to denial of service (DoS) conditions as the affected system exhausts available memory, potentially crashing or severely degrading authentication services. The CVSS v3.1 score of 7.5 reflects a high severity rating, with an attack vector of network (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N), unchanged scope (S:U), and impact limited to availability (A:H) without affecting confidentiality or integrity. No known exploits have been reported in the wild as of the publication date, but the vulnerability's characteristics make it a candidate for exploitation in denial-of-service attacks against critical authentication infrastructure. The lack of a patch link indicates that fixes may not yet be publicly available, underscoring the importance of monitoring vendor advisories and preparing mitigation strategies.

Detailed information about CVE-2024-26461: n/a. Get real-time updates, technical details, and mitigation strategies.

CVE-2024-26461: n/a - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2024-26461: n/a


Red Hat Security Advisory: krb5 security updateCVE-2024-26458 0 Multiple memory leak vulnerabilities have been identified in the krb5 component of Red Hat Enterprise Linux versions 8 and 9. These vulnerabilities affect various parts of the Kerberos implementation, including RPC and GSSAPI modules. The issues have been assigned CVE identifiers CVE-2024-26458, CVE-2024-26461, and CVE-2024-26462. Red Hat has released security updates addressing these memory leaks. The security impact is rated as low to moderate, and no known exploits are reported in the wild. LowVulnerability#gcve #csaf #cve-2024-26458 Join the discussion	GCVE Database	05/22/2024, 11:52:05 UTC Added: 06/25/2026, 21:47:23 UTC
CVE-2024-26461: n/aCVE-2024-26461 0 Kerberos 5 (aka krb5) 1.21.2 contains a memory leak vulnerability in /krb5/src/lib/gssapi/krb5/k5sealv3.c. HighVulnerabilityUnited StatesGermanyUnited Kingdom+7#cve #cve-2024-26461 Join the discussion	CVE Database V5	02/26/2024, 00:00:00 UTC Added: 02/25/2026, 21:45:27 UTC

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