CVE-2026-53016

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux2b789435d7f36ed918d92db647f3a2f3fec9bb1f < 939061b2d0f7f15114e34b4ce878ef50ff4089c3affected
LinuxLinux2b789435d7f36ed918d92db647f3a2f3fec9bb1f < 798d409a8949f3f495f238549b86de2886b129bdaffected
LinuxLinux2b789435d7f36ed918d92db647f3a2f3fec9bb1f < dfb2cf434829819268fe50f41542aad318ad62b2affected
LinuxLinux2b789435d7f36ed918d92db647f3a2f3fec9bb1f < eecee15e263ccb8cd77170a56ab6c969cb54dd6aaffected
LinuxLinux2b789435d7f36ed918d92db647f3a2f3fec9bb1f < bb01d8f1f385bc9034ca114d3508c7fdea24fc9aaffected
LinuxLinux2b789435d7f36ed918d92db647f3a2f3fec9bb1f < df9784bb5b637ac80f4a2768a58ca9a50bef28a9affected
LinuxLinux2b789435d7f36ed918d92db647f3a2f3fec9bb1f < 227c1e1d9e2aa4cfc65ba446d5690da1f546cda4affected
LinuxLinux2b789435d7f36ed918d92db647f3a2f3fec9bb1f < a7a1f3cdd64d8a165d9b8c9e9ad7fb46ac19dfc4affected
LinuxLinux3.14affected
LinuxLinux0 < 3.14unaffected
LinuxLinux5.10.258 <= 5.10.*unaffected
LinuxLinux5.15.209 <= 5.15.*unaffected
LinuxLinux6.1.175 <= 6.1.*unaffected
LinuxLinux6.6.141 <= 6.6.*unaffected
LinuxLinux6.12.91 <= 6.12.*unaffected
LinuxLinux6.18.33 <= 6.18.*unaffected
LinuxLinux7.0.10 <= 7.0.*unaffected
LinuxLinux7.1 <= *unaffected

Weaknesses

ADP Enrichment

kernel: crypto: ccp - copy IV using skcipher ivsize

Additional References

References