Overview
About vulnerability
In the Linux kernel, the following vulnerability has been resolved:
PM / devfreq: Fix buffer overflow in trans_stat_show
Fix buffer overflow in trans_stat_show().
Convert simple snprintf to the more secure scnprintf with size of PAGE_SIZE.
Add condition checking if we are exceeding PAGE_SIZE and exit early from loop. Also add at the end a warning that we exceeded PAGE_SIZE and that stats is disabled.
Return -EFBIG in the case where we don’t have enough space to write the full transition table.
Also document in the ABI that this function can return -EFBIG error.
Details
- Affected product:
- AlmaLinux 9.2 ESU , Amazon Linux 2 ELS , CentOS 7 ELS , CentOS 8.4 ELS , CentOS 8.5 ELS , CentOS Stream 8 ELS , CloudLinux 7 ELS , Debian 10 ELS , Oracle Linux 7 ELS , RHEL 7 ELS , TuxCare 9.6 ESU , Ubuntu 16.04 ELS , Ubuntu 18.04 ELS , Ubuntu 20.04 ELS
- Affected packages:
- linux-meta @ 4.15.0 (+17 more)
Fixes
KernelCare state
Live-patch status from KernelCare for each operating system.
| Operating system | Status | Covered kernels |
|---|---|---|
| AlmaLinux 9 | Released |
33 kernels
|
| Amazon Linux 2023 | Planned | — |
| Debian 11 | Released |
28 kernels
|
| Debian 11 cloud | Released |
8 kernels
|
| Oracle Linux 9 | Released |
39 kernels
|
| Proxmox VE 7 5.15 | Released |
43 kernels
|
| RHEL 9 | Released |
33 kernels
|
| Rocky Linux 9 | Released |
33 kernels
|
| Ubuntu 18.04 | Will Not Fix | — |
| Ubuntu 18.04 HWE Focal | Will Not Fix | — |
| Ubuntu 20.04 | Planned | — |
| Ubuntu 20.04 GCP | Planned | — |
| Ubuntu 20.04 HWE AWS | Released |
37 kernels
|
| Ubuntu 20.04 HWE Azure | Released |
21 kernels
|
| Ubuntu 22.04 | Released |
50 kernels
|
| Ubuntu 22.04 AWS | Released |
44 kernels
|
| Ubuntu 22.04 Azure | Released |
41 kernels
|