Bug 2492269 (CVE-2026-53016) - CVE-2026-53016 kernel: crypto: ccp - copy IV using skcipher ivsize
Summary: CVE-2026-53016 kernel: crypto: ccp - copy IV using skcipher ivsize
Keywords:
Status: NEW
Alias: CVE-2026-53016
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-24 18:02 UTC by OSIDB Bzimport
Modified: 2026-06-25 13:24 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
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Embargoed:


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Description OSIDB Bzimport 2026-06-24 18:02:00 UTC
In the Linux kernel, the following vulnerability has been resolved:

crypto: ccp - copy IV using skcipher ivsize

AF_ALG rfc3686-ctr-aes-ccp requests pass an 8-byte IV to the driver.

ccp_aes_complete() restores AES_BLOCK_SIZE bytes into the caller's IV
buffer while RFC3686 skciphers expose an 8-byte IV, so the restore
overruns the provided buffer.

Use crypto_skcipher_ivsize() to copy only the algorithm's IV length.

Comment 1 Mauro Matteo Cascella 2026-06-25 13:22:25 UTC
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026062451-CVE-2026-53016-90ac@gregkh/T


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