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CVE-2026-80924

crypto: krb5 - use kfree_sensitive() for derived key buffers

HIGH
7.5
CVSS Score
Published: September 9, 2026 at 04:19 PM UTC
Updated: October 19, 2026 at 09:17 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.5
Exploit prediction
EPSS 0.3%

Description

In the Linux kernel, the following vulnerability has been resolved: crypto: krb5 - use kfree_sensitive() for derived key buffers crypto_krb5_prepare_encryption() and crypto_krb5_prepare_checksum() free the buffer holding the freshly derived keys with plain kfree(), leaving the key material behind in the freed slab object.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
90%
3936f02bf2d3308a7359dd37dd96cd60603d81706.15
Vendor states this is fixed in 731a5b6fb4c1705f9405d9029dd64ea81e336207 (fixed)
Vendor states this is fixed in 91b96dc9cc250cd16751f53de525cf3442ca0962 (fixed)
Vendor states this is fixed in a1bf79365794783b19f5b09e8a23f7ee311e8931 (fixed)
Vendor states this is fixed in f7d53dd3f267e46a784f219a75072f2f400d42b9 (fixed)
Vendor states this is fixed in 6.15 (unaffected)
Vendor states this is fixed in 6.18.49 (unaffected)
Vendor states this is fixed in 7.1.13 (unaffected)
Vendor states this is fixed in 7.2.3 (unaffected)
Vendor states this is fixed in 7.3 (unaffected)
Vendor states this is fixed in 7.3-rc1 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (4)

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

CVSS

7.5HIGHLinux
Vector?

Quick Info

StatusRECEIVED

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