CVSS 5.5 · Medium EPSS 0,17%
Kerentanan NULL Pointer Dereference pada linux kernel, debian linux. Skor CVSS 3.1 5.5 (Medium) menurut NVD.
In the Linux kernel, the following vulnerability has been resolved: maple_tree: fix MA_STATE_PREALLOC flag in mas_preallocate() Temporarily clear the preallocation flag when explicitly requesting allocations. Pre-existing allocations are already counted against the request through mas_node_count_gfp(), but the allocations will not happen if the MA_STATE_PREALLOC flag is set. This flag is meant to avoid re-allocating in bulk allocation mode, and to detect issues with preallocation calculations. The MA_STATE_PREALLOC flag should also always be set on zero allocations so that detection of underflow allocations will print a WARN_ON() during consumption. User visible effect of this flaw is a WARN_ON() followed by a null pointer dereference when subsequent requests for larger number of nodes is ignored, such as the vma merge retry in mmap_region() caused by drivers altering the vma flags (which happens in v6.6, at least)
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 6.1 hingga sebelum 6.1.146 |
| linux | linux kernel | Versi 6.2 hingga sebelum 6.6.99 |
| linux | linux kernel | Versi 6.7 hingga sebelum 6.12.36 |
| linux | linux kernel | Versi 6.13 hingga sebelum 6.15.5 |
| linux | linux kernel | Versi 6.16 rc1 |
| linux | linux kernel | Versi 6.16 rc2 |
| linux | linux kernel | Versi 6.16 rc3 |
| debian | debian linux | Versi 11.0 |