CVE-2026-53016

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.

CVSS v3.1 Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0013

Probability of exploitation

0.03%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-805 CWE-805

References

Other References

https://git.kernel.org/stable/c/227c1e1d9e2aa4cfc65ba446d5690da1f546cda4 https://git.kernel.org/stable/c/798d409a8949f3f495f238549b86de2886b129bd https://git.kernel.org/stable/c/939061b2d0f7f15114e34b4ce878ef50ff4089c3 https://git.kernel.org/stable/c/a7a1f3cdd64d8a165d9b8c9e9ad7fb46ac19dfc4 https://git.kernel.org/stable/c/bb01d8f1f385bc9034ca114d3508c7fdea24fc9a https://git.kernel.org/stable/c/df9784bb5b637ac80f4a2768a58ca9a50bef28a9 https://git.kernel.org/stable/c/dfb2cf434829819268fe50f41542aad318ad62b2 https://git.kernel.org/stable/c/eecee15e263ccb8cd77170a56ab6c969cb54dd6a https://access.redhat.com/security/cve/CVE-2026-53016 https://bugzilla.redhat.com/show_bug.cgi?id=2492269

Frequently Asked Questions

What is CVE-2026-53016? +

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. It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-53016? +

CVE-2026-53016 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0013, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-53016? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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