Overview
About vulnerability
In the Linux kernel, the following vulnerability has been resolved:
x86/bugs: Make Safe-RET robust against interrupt injection
An attacker injecting interrupts while the Safe-RET mitigation executes on machines affected by SRSO can neutralize the safe return sequence, potentially leading to data leakage through speculative execution.
Fixup register state as if the Safe-RET sequence executed successfully by “emulating” it, in a manner of speaking, and avoid executing a RET instruction after returning from the interrupt.
Details
- Affected product:
- AlmaLinux 9.2 ESU , CentOS 7 ELS , CentOS 8.4 ELS , CentOS 8.5 ELS , CentOS Stream 8 ELS , CloudLinux 7 ELS , Debian 11 ELS , Oracle Linux 7 ELS , RHEL 7 ELS , TuxCare 9.6 ESU , TuxCare 9.8 ESU , Ubuntu 20.04 ELS
- Affected packages:
- kernel @ 4.18.0 (+12 more)
Fixes
KernelCare state
Live-patch status from KernelCare for each operating system.
| Operating system | Status | Covered kernels |
|---|---|---|
| AlmaLinux 9 | Released |
113 kernels
|
| Debian 12 | Planned | — |
| Debian 13 | Planned | — |
| Oracle Linux 7 UEK 6 | Released |
28 kernels
|
| Oracle Linux 8 UEK 6 | Released |
76 kernels
|
| Oracle Linux 8 UEK 7 | Released |
89 kernels
|
| Oracle Linux 9 | Released |
109 kernels
|
| Oracle Linux 9 UEK 7 | Released |
89 kernels
|
| RHEL 10 | Planned | — |
| RHEL 8 | Planned | — |
| RHEL 9 | Released |
110 kernels
|
| Rocky Linux 9 | Released |
90 kernels
|
| Ubuntu 22.04 | Planned | — |
| Ubuntu 22.04 AWS | Planned | — |
| Ubuntu 22.04 Azure | Planned | — |
| Ubuntu 26.04 | Will Not Fix | — |