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 , Amazon Linux 2 ELS , CentOS 8.4 ELS , CentOS 8.5 ELS , CentOS Stream 8 ELS , Debian 10 ELS , Oracle Linux 7 ELS , TuxCare 9.6 ESU , Ubuntu 16.04 ELS , Ubuntu 18.04 ELS , Ubuntu 20.04 ELS
- Affected packages:
- linux-meta @ 5.4.0 (+12 more)
Fixes
KernelCare state
Live-patch status from KernelCare for each operating system.
| Operating system | Status | Covered kernels |
|---|---|---|
| AlmaLinux 10 | Released |
50 kernels
|
| AlmaLinux 9 | Released |
116 kernels
|
| Debian 11 | Released |
37 kernels
|
| Debian 11 cloud | Released |
17 kernels
|
| Debian 12 | Released |
40 kernels
|
| Debian 13 | Released |
10 kernels
|
| Oracle Linux 10 | Released |
36 kernels
|
| Oracle Linux 9 | Released |
115 kernels
|
| Proxmox VE 7 5.15 | Released |
47 kernels
|
| RHEL 10 | Released |
49 kernels
|
| RHEL 8 | In Progress | — |
| RHEL 9 | Released |
114 kernels
|
| Rocky Linux 10 | Released |
33 kernels
|
| Rocky Linux 9 | Released |
91 kernels
|
| Ubuntu 20.04 HWE AWS | Released |
57 kernels
|
| Ubuntu 20.04 HWE Azure | Released |
40 kernels
|
| Ubuntu 22.04 | Released |
97 kernels
|
| Ubuntu 22.04 AWS | Released |
88 kernels
|
| Ubuntu 22.04 Azure | Released |
78 kernels
|
| Ubuntu 24.04 | Planned | — |