Overview
About vulnerability
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.
Details
- Affected product:
- AlmaLinux 9.2 ESU , CentOS 8.4 ELS , CentOS 8.5 ELS , CentOS Stream 8 ELS , TuxCare 9.6 ESU , Ubuntu 20.04 ELS
- Affected packages:
- linux-meta @ 5.4.0 (+5 more)
KernelCare state
Live-patch status from KernelCare for each operating system.
| Operating system | Status | Covered kernels |
|---|---|---|
| AlmaLinux 10 | In Rollout |
50 kernels
|
| AlmaLinux 9 | In Rollout |
116 kernels
|
| Debian 11 | Planned | — |
| Debian 11 cloud | Planned | — |
| Debian 12 | In Rollout |
40 kernels
|
| Oracle Linux 10 | In Rollout |
36 kernels
|
| Oracle Linux 9 | Released |
115 kernels
|
| RHEL 10 | In Rollout |
49 kernels
|
| RHEL 9 | Released |
114 kernels
|
| Rocky Linux 10 | In Rollout |
33 kernels
|
| Rocky Linux 9 | In Rollout |
91 kernels
|
| Ubuntu 22.04 | Planned | — |
| Ubuntu 24.04 | Planned | — |