CVSS 5.5 · Medium EPSS 0,25%
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: bcache: revert replacing IS_ERR_OR_NULL with IS_ERR again Commit 028ddcac477b ("bcache: Remove unnecessary NULL point check in node allocations") leads a NULL pointer deference in cache_set_flush(). 1721 if (!IS_ERR_OR_NULL(c->root)) 1722 list_add(&c->root->list, &c->btree_cache); >From the above code in cache_set_flush(), if previous registration code fails before allocating c->root, it is possible c->root is NULL as what it is initialized. __bch_btree_node_alloc() never returns NULL but c->root is possible to be NULL at above line 1721. This patch replaces IS_ERR() by IS_ERR_OR_NULL() to fix this.
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 4.19.291 hingga sebelum 4.20 |
| linux | linux kernel | Versi 5.4.251 hingga sebelum 5.4.287 |
| linux | linux kernel | Versi 5.10.188 hingga sebelum 5.10.231 |
| linux | linux kernel | Versi 5.15.121 hingga sebelum 5.15.174 |
| linux | linux kernel | Versi 6.1.39 hingga sebelum 6.1.120 |
| linux | linux kernel | Versi 6.4.4 hingga sebelum 6.6.66 |
| linux | linux kernel | Versi 6.7 hingga sebelum 6.12.5 |
| linux | linux kernel | Versi 6.13 rc1 |