cve-2022-48714
Vulnerability from cvelistv5
Published
2024-06-20 11:13
Modified
2024-12-19 08:06
Severity ?
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
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5e457aeab52a5947619e1f18047f4d2f3212b3eb
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6304a613a97d6dcd49b93fbad31e9f39d1e138d6
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b293dcc473d22a62dc6d78de2b15e4f49515db56
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d578933f6226d5419af9306746efa1c693cbaf9c
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/5e457aeab52a5947619e1f18047f4d2f3212b3eb
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/6304a613a97d6dcd49b93fbad31e9f39d1e138d6
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/b293dcc473d22a62dc6d78de2b15e4f49515db56
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/d578933f6226d5419af9306746efa1c693cbaf9c
Impacted products
Vendor Product Version
Linux Linux Version: 5.8
Show details on NVD website

To clipboard 

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