Linux vulnerability

What happened

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 versions

Linux: 2b789435d7f36ed918d92db647f3a2f3fec9bb1f through before 939061b2d0f7f15114e34b4ce878ef50ff4089c3 (git); 2b789435d7f36ed918d92db647f3a2f3fec9bb1f through before 798d409a8949f3f495f238549b86de2886b129bd (git); 2b789435d7f36ed918d92db647f3a2f3fec9bb1f through before dfb2cf434829819268fe50f41542aad318ad62b2 (git); 2b789435d7f36ed918d92db647f3a2f3fec9bb1f through before eecee15e263ccb8cd77170a56ab6c969cb54dd6a (git); 2b789435d7f36ed918d92db647f3a2f3fec9bb1f through before bb01d8f1f385bc9034ca114d3508c7fdea24fc9a (git); 2b789435d7f36ed918d92db647f3a2f3fec9bb1f through before df9784bb5b637ac80f4a2768a58ca9a50bef28a9 (git); 2b789435d7f36ed918d92db647f3a2f3fec9bb1f through before 227c1e1d9e2aa4cfc65ba446d5690da1f546cda4 (git); 2b789435d7f36ed918d92db647f3a2f3fec9bb1f through before a7a1f3cdd64d8a165d9b8c9e9ad7fb46ac19dfc4 (git); 3.14 Fixed: See vendor advisory.

Why it matters

Review the vendor advisory and exposure of the affected product to determine operational impact.

Detection & mitigation

• Apply vendor-provided updates or mitigations.
• Review affected product exposure and access logs.