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CVE PROGRAM SOURCE RECORD5.5 Medium

CVE-2024-56768

bpf: Fix bpf_get_smp_processor_id() on !CONFIG_SMP

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Status
Published
Published
Updated
Assigning organization
Linux

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 1ae6921009e5d72787e07ccc04754514ccf6bc99 to < f4ab7d74247b0150547cf909b3f6f24ee85183dfaffected
  • 1ae6921009e5d72787e07ccc04754514ccf6bc99 to < 23579010cf0a12476e96a5f1acdf78a9c5843657affected

Linux Linux

Default version status: affected

  • 6.10affected
  • 0 to < 6.10unaffected
  • 6.12.8 to ≤ 6.12.*unaffected
  • 6.13 to ≤ *unaffected

References