CVSS 5.5 · Medium EPSS 0,26%
Kerentanan NULL Pointer Dereference pada linux kernel. Skor CVSS 3.1 5.5 (Medium) menurut NVD.
In the Linux kernel, the following vulnerability has been resolved: mm: prevent derefencing NULL ptr in pfn_section_valid() Commit 5ec8e8ea8b77 ("mm/sparsemem: fix race in accessing memory_section->usage") changed pfn_section_valid() to add a READ_ONCE() call around "ms->usage" to fix a race with section_deactivate() where ms->usage can be cleared. The READ_ONCE() call, by itself, is not enough to prevent NULL pointer dereference. We need to check its value before dereferencing it.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
· uraikan di kalkulator | Vendor | Produk | Versi terdampak |
|---|---|---|
| linux | linux kernel | Versi 5.10.219 hingga sebelum 5.10.222 |
| linux | linux kernel | Versi 5.15.149 hingga sebelum 5.15.163 |
| linux | linux kernel | Versi 6.1.76 hingga sebelum 6.1.100 |
| linux | linux kernel | Versi 6.6.15 hingga sebelum 6.6.41 |
| linux | linux kernel | Versi 6.8 hingga sebelum 6.9.10 |