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
medium
medium
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: 2026-08-25 17:27 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:38491 0 None None None 2026-07-13 12:16:13 UTC
Red Hat Product Errata RHSA-2026:39494 0 None None None 2026-07-14 21:14:47 UTC
Red Hat Product Errata RHSA-2026:55764 0 None None None 2026-08-17 16:51:28 UTC
Red Hat Product Errata RHSA-2026:55765 0 None None None 2026-08-17 15:30:02 UTC
Red Hat Product Errata RHSA-2026:56574 0 None None None 2026-08-19 01:15:43 UTC
Red Hat Product Errata RHSA-2026:59473 0 None None None 2026-08-25 15:18:42 UTC
Red Hat Product Errata RHSA-2026:59544 0 None None None 2026-08-25 17:27:03 UTC

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
Comment 4 errata-xmlrpc 2026-07-13 12:16:12 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:38491 https://access.redhat.com/errata/RHSA-2026:38491
Comment 5 errata-xmlrpc 2026-07-14 21:14:47 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:39494 https://access.redhat.com/errata/RHSA-2026:39494
Comment 8 errata-xmlrpc 2026-08-17 15:30:02 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:55765 https://access.redhat.com/errata/RHSA-2026:55765
Comment 9 errata-xmlrpc 2026-08-17 16:51:27 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:55764 https://access.redhat.com/errata/RHSA-2026:55764
Comment 10 errata-xmlrpc 2026-08-19 01:15:42 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:56574 https://access.redhat.com/errata/RHSA-2026:56574
Comment 11 errata-xmlrpc 2026-08-25 15:18:41 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On

Via RHSA-2026:59473 https://access.redhat.com/errata/RHSA-2026:59473
Comment 12 errata-xmlrpc 2026-08-25 17:27:02 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:59544 https://access.redhat.com/errata/RHSA-2026:59544
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