Bug 2506827 (CVE-2026-64208) - CVE-2026-64208 kernel: crypto/krb5, rxrpc: Fix lack of pre-decrypt/pre-verify length checks
Summary: CVE-2026-64208 kernel: crypto/krb5, rxrpc: Fix lack of pre-decrypt/pre-verify...
Keywords:
Status: NEW
Alias: CVE-2026-64208
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-24 16:06 UTC by OSIDB Bzimport
Modified: 2026-07-28 12:45 UTC (History)
2 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-07-24 16:06:45 UTC
In the Linux kernel, the following vulnerability has been resolved:

crypto/krb5, rxrpc: Fix lack of pre-decrypt/pre-verify length checks

Change the krb5 crypto library to provide facilities to precheck the length
of the message about to be decrypted or verified.

Fix AF_RXRPC to make use of this to validate DATA packets secured with
RxGK.

Comment 1 Mauro Matteo Cascella 2026-07-28 12:38:11 UTC
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026072411-CVE-2026-64208-5d8d@gregkh/T


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