Bug 2515351 (CVE-2026-68452) - CVE-2026-68452 kernel: s390/zcrypt: Validate length for CCA AES cipher key requests
Summary: CVE-2026-68452 kernel: s390/zcrypt: Validate length for CCA AES cipher key re...
Keywords:
Status: NEW
Alias: CVE-2026-68452
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: 2026-08-13 14:30 UTC by OSIDB Bzimport
Modified: 2026-08-13 15:49 UTC (History)
2 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-08-13 14:30:58 UTC 
In the Linux kernel, the following vulnerability has been resolved:

s390/zcrypt: Validate length for CCA AES cipher key requests

cca_cipher2protkey() derives the copy length for the CPRB parameter
block directly from the length field in the key token. Reject the
request early if the token length exceeds the available space in the
parameter block.
Comment 1 gkamathe 2026-08-13 15:45:08 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026081330-CVE-2026-68452-f495@gregkh/T
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