SB2026090987 - Sensitive Information in Resource Not Removed Before Reuse in Linux kernel krb5

Description

This security bulletin contains information about 1 vulnerability.

1) Sensitive Information in Resource Not Removed Before Reuse (CVE-ID: CVE-2026-80924)

CWE-ID: CWE-226 - Sensitive Information in Resource Not Removed Before Reuse

CVSSv4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local user to disclose sensitive information.

The vulnerability exists due to failure to clear sensitive information before release in crypto_krb5_prepare_encryption() and crypto_krb5_prepare_checksum() when releasing derived key buffers. A local user can invoke affected Kerberos 5 cryptographic operations to disclose sensitive information.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/731a5b6fb4c1705f9405d9029dd64ea81e336207
• https://git.kernel.org/stable/c/91b96dc9cc250cd16751f53de525cf3442ca0962
• https://git.kernel.org/stable/c/a1bf79365794783b19f5b09e8a23f7ee311e8931
• https://git.kernel.org/stable/c/f7d53dd3f267e46a784f219a75072f2f400d42b9