CVSS 5.5 · Medium EPSS 0,25%
Kerentanan Divide By Zero pada linux kernel. Skor CVSS 3.1 5.5 (Medium) menurut NVD.
In the Linux kernel, the following vulnerability has been resolved: nfc: pn533: Add poll mod list filling check In case of im_protocols value is 1 and tm_protocols value is 0 this combination successfully passes the check 'if (!im_protocols && !tm_protocols)' in the nfc_start_poll(). But then after pn533_poll_create_mod_list() call in pn533_start_poll() poll mod list will remain empty and dev->poll_mod_count will remain 0 which lead to division by zero. Normally no im protocol has value 1 in the mask, so this combination is not expected by driver. But these protocol values actually come from userspace via Netlink interface (NFC_CMD_START_POLL operation). So a broken or malicious program may pass a message containing a "bad" combination of protocol parameter values so that dev->poll_mod_count is not incremented inside pn533_poll_create_mod_list(), thus leading to division by zero. Call trace looks like: nfc_genl_start_poll() nfc_start_poll() ->start_poll() pn533_start_poll() Add poll mod list filling check. Found by Linux Verification Center (linuxtesting.org) with SVACE.
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 3.12 hingga sebelum 5.4.283 |
| linux | linux kernel | Versi 5.5 hingga sebelum 5.10.225 |
| linux | linux kernel | Versi 5.11 hingga sebelum 5.15.166 |
| linux | linux kernel | Versi 5.16 hingga sebelum 6.1.108 |
| linux | linux kernel | Versi 6.2 hingga sebelum 6.6.49 |
| linux | linux kernel | Versi 6.7 hingga sebelum 6.10.8 |
| linux | linux kernel | Versi 6.11 rc1 |
| linux | linux kernel | Versi 6.11 rc2 |
| linux | linux kernel | Versi 6.11 rc3 |
| linux | linux kernel | Versi 6.11 rc4 |
| linux | linux kernel | Versi 6.11 rc5 |