Overview
About vulnerability
In the Linux kernel, the following vulnerability has been resolved:
s390/sclp: Fix SCCB present check
Tracing code called by the SCLP interrupt handler contains early exits if the SCCB address associated with an interrupt is NULL. This check is performed after physical to virtual address translation.
If the kernel identity mapping does not start at address zero, the resulting virtual address is never zero, so that the NULL checks won’t work. Subsequently this may result in incorrect accesses to the first page of the identity mapping.
Fix this by introducing a function that handles the NULL case before address translation.
Details
- Affected product:
- AlmaLinux 9.2 ESU , TuxCare 9.6 ESU
- Affected packages:
- kernel @ 5.14.0 (+1 more)
Fixes
KernelCare state
Live-patch status from KernelCare for each operating system.
| Operating system | Status | Covered kernels |
|---|---|---|
| AlmaLinux 10 | Will Not Fix |
8 kernels
|
| AlmaLinux 9 | Will Not Fix |
71 kernels
|
| Debian 12 | Will Not Fix |
30 kernels
|
| Debian 13 | Will Not Fix | — |
| Oracle Linux 10 | Will Not Fix |
8 kernels
|
| Oracle Linux 9 | Will Not Fix |
77 kernels
|
| RHEL 10 | Will Not Fix |
8 kernels
|
| RHEL 9 | Will Not Fix |
71 kernels
|
| Rocky Linux 10 | Will Not Fix |
5 kernels
|
| Rocky Linux 9 | Will Not Fix |
63 kernels
|
| Ubuntu 24.04 | Will Not Fix |
37 kernels
|