CVE-2024-56768

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.

Reserved 2024-12-29 | Published 2025-01-06 | Updated 2025-01-20 | Assigner Linux

Product status

Default status
unaffected

1ae6921009e5d72787e07ccc04754514ccf6bc99 before f4ab7d74247b0150547cf909b3f6f24ee85183df
affected

1ae6921009e5d72787e07ccc04754514ccf6bc99 before 23579010cf0a12476e96a5f1acdf78a9c5843657
affected

Default status
affected

6.10
affected

Any version before 6.10
unaffected

6.12.8
unaffected

6.13
unaffected

References

git.kernel.org/...c/f4ab7d74247b0150547cf909b3f6f24ee85183df

git.kernel.org/...c/23579010cf0a12476e96a5f1acdf78a9c5843657

cve.org (CVE-2024-56768)

nvd.nist.gov (CVE-2024-56768)

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