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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.14%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.14% probability · 4th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787, CWE-805
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/227c1e1d9e2aa4cfc65ba446d5690da1f546cda4Patch
- https://git.kernel.org/stable/c/798d409a8949f3f495f238549b86de2886b129bdPatch
- https://git.kernel.org/stable/c/939061b2d0f7f15114e34b4ce878ef50ff4089c3Patch
- https://git.kernel.org/stable/c/a7a1f3cdd64d8a165d9b8c9e9ad7fb46ac19dfc4Patch
- https://git.kernel.org/stable/c/bb01d8f1f385bc9034ca114d3508c7fdea24fc9aPatch
- https://git.kernel.org/stable/c/df9784bb5b637ac80f4a2768a58ca9a50bef28a9Patch
- https://git.kernel.org/stable/c/dfb2cf434829819268fe50f41542aad318ad62b2Patch
- https://git.kernel.org/stable/c/eecee15e263ccb8cd77170a56ab6c969cb54dd6aPatch
- https://access.redhat.com/errata/RHSA-2026:38491Third Party Advisory
- https://access.redhat.com/errata/RHSA-2026:39494Third 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/security/cve/CVE-2026-53016Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2492269Third Party Advisory
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53016.jsonThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.