CVE-2022-48714 (GCVE-0-2022-48714)

Vulnerability from cvelistv5 – Published: 2024-06-20 11:13 – Updated: 2026-05-11 18:45
VLAI
Title
bpf: Use VM_MAP instead of VM_ALLOC for ringbuf
Summary
In the Linux kernel, the following vulnerability has been resolved: bpf: Use VM_MAP instead of VM_ALLOC for ringbuf After commit 2fd3fb0be1d1 ("kasan, vmalloc: unpoison VM_ALLOC pages after mapping"), non-VM_ALLOC mappings will be marked as accessible in __get_vm_area_node() when KASAN is enabled. But now the flag for ringbuf area is VM_ALLOC, so KASAN will complain out-of-bound access after vmap() returns. Because the ringbuf area is created by mapping allocated pages, so use VM_MAP instead. After the change, info in /proc/vmallocinfo also changes from [start]-[end] 24576 ringbuf_map_alloc+0x171/0x290 vmalloc user to [start]-[end] 24576 ringbuf_map_alloc+0x171/0x290 vmap user
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 17:11 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 457f44363a8894135c85b7a9afd2bd8196db24ab , < 6304a613a97d6dcd49b93fbad31e9f39d1e138d6 (git)
Affected: 457f44363a8894135c85b7a9afd2bd8196db24ab , < 5e457aeab52a5947619e1f18047f4d2f3212b3eb (git)
Affected: 457f44363a8894135c85b7a9afd2bd8196db24ab , < d578933f6226d5419af9306746efa1c693cbaf9c (git)
Affected: 457f44363a8894135c85b7a9afd2bd8196db24ab , < b293dcc473d22a62dc6d78de2b15e4f49515db56 (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.8
Unaffected: 0 , < 5.8 (semver)
Unaffected: 5.10.99 , ≤ 5.10.* (semver)
Unaffected: 5.15.22 , ≤ 5.15.* (semver)
Unaffected: 5.16.8 , ≤ 5.16.* (semver)
Unaffected: 5.17 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.