Overview
About vulnerability
In the Linux kernel, the following vulnerability has been resolved:
dma-buf/sw-sync: don’t enable IRQ from sync_print_obj()
Since commit a6aa8fca4d79 (“dma-buf/sw-sync: Reduce irqsave/irqrestore from known context”) by error replaced spin_unlock_irqrestore() with spin_unlock_irq() for both sync_debugfs_show() and sync_print_obj() despite sync_print_obj() is called from sync_debugfs_show(), lockdep complains inconsistent lock state warning.
Use plain spin_{lock,unlock}() for sync_print_obj(), for sync_debugfs_show() is already using spin_{lock,unlock}_irq().
Details
- Affected product:
- Amazon Linux 2 ELS , CentOS 6 ELS , CentOS 7 ELS , CloudLinux 6 ELS , CloudLinux 7 ELS , Debian 10 ELS , Oracle Linux 6 ELS , Oracle Linux 7 ELS , RHEL 7 ELS , Ubuntu 16.04 ELS , Ubuntu 18.04 ELS , Ubuntu 20.04 ELS
- Affected packages:
- kernel @ 2.6.32 (+13 more)
Fixes
KernelCare state
Live-patch status from KernelCare for each operating system.
| Operating system | Status | Covered kernels |
|---|---|---|
| Debian 11 | Released |
30 kernels
|
| Debian 11 cloud | Released |
10 kernels
|
| Debian 12 | Planned | — |
| Oracle Linux 7 UEK 5 | Released |
118 kernels
|
| Oracle Linux 7 UEK 6 | Released |
100 kernels
|
| Oracle Linux 8 UEK 6 | Released |
101 kernels
|
| Proxmox VE 7 5.15 | Released |
47 kernels
|
| Ubuntu 18.04 AWS Focal | Released |
56 kernels
|
| Ubuntu 18.04 HWE Focal | Released |
69 kernels
|
| Ubuntu 20.04 | Released |
112 kernels
|
| Ubuntu 20.04 AWS | Released |
95 kernels
|
| Ubuntu 20.04 Azure | Released |
86 kernels
|
| Ubuntu 20.04 GCP | Planned | — |
| Ubuntu 20.04 HWE AWS | Released |
45 kernels
|
| Ubuntu 20.04 HWE Azure | Released |
28 kernels
|
| Ubuntu 22.04 | Released |
58 kernels
|
| Ubuntu 22.04 AWS | Released |
52 kernels
|
| Ubuntu 22.04 Azure | Released |
48 kernels
|
| Ubuntu 24.04 | Planned | — |