Medium severity5.5NVD Advisory· Published Jan 6, 2025· Updated Jun 17, 2026
CVE-2024-56768
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
9cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 5 more
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=6.10,<6.12.8
- cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.13:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.13:rc3:*:*:*:*:*:*
- (no CPE)
- (no CPE)range: 6.10
- osv-coords3 versionspkg:deb/ubuntu/[email protected]?arch=source&distro=oracularpkg:deb/ubuntu/[email protected]?arch=source&distro=oracularpkg:linux/kernel
< 6.11.0-1011.12+ 2 more
- (no CPE)range: < 6.11.0-1011.12
- (no CPE)range: < 6.11.0-1010.10
- (no CPE)range: >= 6.10.0, < 6.12.8
Patches
Vulnerability mechanics
References
2News mentions
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