CVSS 7.8 · High EPSS 0,24%
Kerentanan Use After Free pada linux kernel. Skor CVSS 3.1 7.8 (High) menurut CISA ADP.
In the Linux kernel, the following vulnerability has been resolved: padata: avoid UAF for reorder_work Although the previous patch can avoid ps and ps UAF for _do_serial, it can not avoid potential UAF issue for reorder_work. This issue can happen just as below: crypto_request crypto_request crypto_del_alg padata_do_serial ... padata_reorder // processes all remaining // requests then breaks while (1) { if (!padata) break; ... } padata_do_serial // new request added list_add // sees the new request queue_work(reorder_work) padata_reorder queue_work_on(squeue->work) ... <kworker context> padata_serial_worker // completes new request, // no more outstanding // requests crypto_del_alg // free pd <kworker context> invoke_padata_reorder // UAF of pd To avoid UAF for 'reorder_work', get 'pd' ref before put 'reorder_work' into the 'serial_wq' and put 'pd' ref until the 'serial_wq' finish.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
· uraikan di kalkulator | Vendor | Produk | Versi terdampak |
|---|---|---|
| linux | linux kernel | Versi 5.4.19 hingga sebelum 5.5 |
| linux | linux kernel | Versi 5.5.3 hingga sebelum 5.10.235 |
| linux | linux kernel | Versi 5.11 hingga sebelum 5.15.79 |
| linux | linux kernel | Versi 5.16 hingga sebelum 6.1.129 |
| linux | linux kernel | Versi 6.2 hingga sebelum 6.6.76 |
| linux | linux kernel | Versi 6.7 hingga sebelum 6.12.13 |
| linux | linux kernel | Versi 6.13 hingga sebelum 6.13.2 |