CVE-2022-48714
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2022
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
bpf: Use VM_MAP instead of VM_ALLOC for ringbuf
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
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 457f44363a8894135c85b7a9afd2bd8196db24ab | affected | git | 6304a613a97d6dcd49b93fbad31e9f39d1e138d6 | Unavailable | None listed |
| 457f44363a8894135c85b7a9afd2bd8196db24ab | affected | git | 5e457aeab52a5947619e1f18047f4d2f3212b3eb | Unavailable | None listed |
| 457f44363a8894135c85b7a9afd2bd8196db24ab | affected | git | d578933f6226d5419af9306746efa1c693cbaf9c | Unavailable | None listed |
| 457f44363a8894135c85b7a9afd2bd8196db24ab | affected | git | b293dcc473d22a62dc6d78de2b15e4f49515db56 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 5.8 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.8 | Unavailable | None listed |
| 5.10.99 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.22 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 5.16.8 | unaffected | semver | Unavailable | 5.16.* | None listed |
| 5.17 | unaffected | original_commit_for_fix | Unavailable | * | None listed |