CVE-2024-56768
Medium
Description
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix bpf_get_smp_processor_id() on !CONFIG_SMP On x86-64 calling bpf_get_smp_processor_id() in a kernel with CONFIG_SMP disabled can trigger the following bug, as pcpu_hot is unavailable: [ 8.471774] BUG: unable to handle page fault for address: 00000000936a290c [ 8.471849] #PF: supervisor read access in kernel mode [ 8.471881] #PF: error_code(0x0000) - not-present page Fix by inlining a return 0 in the !CONFIG_SMP case.
SeverityMedium
CVSS5.5
Exploit probability—
Product
Linux Kernel
PublishedJan 6, 2025
First seenJan 6, 2025
How to fix
Update
- linux linux_kernel6.12.8 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 6.10 ≤ v < 6.12.8, 6.13 | 6.12.8 |
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