Red Hat Enterprise Linux 1.2.8 lib/kdb lib/kdb/keytab.c krb5_ktkdb_get_entry memory leak

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.4$0-$5k0.00+

Summaryinfo

A vulnerability categorized as critical has been discovered in Red Hat Enterprise Linux 1.2.8. This vulnerability affects the function krb5_ktkdb_get_entry of the file lib/kdb/keytab.c of the component lib/kdb. Such manipulation leads to memory leak. This vulnerability is listed as CVE-2026-112317. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in Red Hat Enterprise Linux 1.2.8 and classified as critical. Affected by this issue is the function krb5_ktkdb_get_entry of the file lib/kdb/keytab.c of the component lib/kdb. The manipulation with an unknown input leads to a memory leak vulnerability. Using CWE to declare the problem leads to CWE-401. The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse. Impacted is availability. CVE summarizes:

krb5_ktkdb_get_entry() in lib/kdb/keytab.c in MIT Kerberos 5 (aka krb5) 1.2.8 and later does not free decrypted key material when a post-decryption check fails, which allows remote attackers to cause a denial of service (memory leak in the KDC or kadmind) via requests that repeatedly trigger key decryption failures.

The advisory is available at access.redhat.com. This vulnerability is handled as CVE-2026-112317 since 10/19/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 11/09/2026). This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.4

VulDB Base Score: 7.5
VulDB Temp Score: 7.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.3
CNA Vector (redhat): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Memory leak
CWE: CWE-401 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

10/19/2026 CVE reserved
11/09/2026 +21 days Advisory disclosed
11/09/2026 +0 days VulDB entry created
11/09/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: redhat.com

Advisory: access.redhat.com
Status: Not defined

CNA: redhat
CVE: CVE-2026-112317 (🔒)

GCVE (CVE): GCVE-0-2026-112317
GCVE (VulDB): GCVE-100-433238

Entryinfo

Created: 11/09/2026 20:19
Changes: 11/09/2026 20:19 (64)
Complete: 🔍
Cache ID: 216::103

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