CVE-2026-53016 Details
Description
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.
A vulnerability in the Linux kernel's crypto subsystem, specifically within the CCP AES implementation, has been addressed. This issue arises when AF_ALG RFC3686-CTR-AES-CCP requests are processed. The driver receives an 8-byte initialization vector (IV), but the completion function, ccp_aes_complete(), erroneously restores a full AES_BLOCK_SIZE worth of data into the caller's IV buffer. This mismatch causes a buffer overrun, as RFC3686 skciphers only expose an 8-byte IV. The vulnerability has been fixed by modifying the code to use crypto_skcipher_ivsize() to accurately copy the IV length corresponding to the algorithm, thereby preventing the buffer overrun.
Users can upgrade to the patched version of the Linux kernel available in the Linux kernel stable tree to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-787 | Out-of-bounds Write | [email protected] |
| CWE-805 | Buffer Access with Incorrect Length Value | redhat-SADP |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 3.14, < 5.10.258 >= 5.11, < 5.15.209 >= 5.16, < 6.1.175 >= 6.2, < 6.6.141 >= 6.7, < 6.12.91 >= 6.13, < 6.18.33 >= 6.19, < 7.0.10 |
CPE
Remediation
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Change History
13 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 16, 2026 | CVE Modified | redhat-SADP |
| Sep 9, 2026 | CVE Modified | redhat-SADP |
| Aug 31, 2026 | CVE Modified | redhat-SADP |
| Aug 26, 2026 | CVE Modified | redhat-SADP |
| Aug 26, 2026 | CVE Modified | kernel.org |
| Aug 19, 2026 | CVE Modified | redhat-SADP |
| Aug 18, 2026 | CVE Modified | redhat-SADP |
| Jul 15, 2026 | Initial Analysis | [email protected] |
| Jul 15, 2026 | CVE Modified | redhat-SADP |
| Jul 14, 2026 | CVE Modified | redhat-SADP |
| Jun 30, 2026 | CVE Modified | redhat-SADP |
| Jun 28, 2026 | CVE Modified | kernel.org |
| Jun 24, 2026 | New CVE Received | kernel.org |