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Vulnerability record · CVE-2026-53016 · published 24 June 2026

CVE-2026-53016: Linux kernel out-of-bounds write vulnerability

Linux · Linux Kernel

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.

7.8 CVSS 3.1 High EPSS 0.19% · top 92.0% CWE-787 · Out-of-bounds writeCWE-805 · CWE-805
7.8CVSS 3.1 base score
0.19%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
23References
16 Sep 2026Last modified by NVD

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/227c1e1d9e2aa4cfc65ba446d5690da1f546cda4 Patch
https://git.kernel.org/stable/c/798d409a8949f3f495f238549b86de2886b129bd Patch
https://git.kernel.org/stable/c/939061b2d0f7f15114e34b4ce878ef50ff4089c3 Patch
https://git.kernel.org/stable/c/a7a1f3cdd64d8a165d9b8c9e9ad7fb46ac19dfc4 Patch
https://git.kernel.org/stable/c/bb01d8f1f385bc9034ca114d3508c7fdea24fc9a Patch
https://git.kernel.org/stable/c/df9784bb5b637ac80f4a2768a58ca9a50bef28a9 Patch
https://git.kernel.org/stable/c/dfb2cf434829819268fe50f41542aad318ad62b2 Patch
https://git.kernel.org/stable/c/eecee15e263ccb8cd77170a56ab6c969cb54dd6a Patch
https://access.redhat.com/errata/RHSA-2026:38491 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:39494 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:55764
https://access.redhat.com/errata/RHSA-2026:55765
https://access.redhat.com/errata/RHSA-2026:56574
https://access.redhat.com/errata/RHSA-2026:59473
https://access.redhat.com/errata/RHSA-2026:59544
https://access.redhat.com/errata/RHSA-2026:61256
https://access.redhat.com/errata/RHSA-2026:64767
https://access.redhat.com/errata/RHSA-2026:65710
https://access.redhat.com/errata/RHSA-2026:67721
https://access.redhat.com/errata/RHSA-2026:67723
https://access.redhat.com/security/cve/CVE-2026-53016 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2492269 Third Party Advisory
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53016.json Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2026-53016), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.