CVSS 5.5 · Medium EPSS 0,20%
Kerentanan Use of Uninitialized Resource pada linux kernel, debian linux. Skor CVSS 3.1 5.5 (Medium) menurut NVD.
In the Linux kernel, the following vulnerability has been resolved: net: ch9200: fix uninitialised access during mii_nway_restart In mii_nway_restart() the code attempts to call mii->mdio_read which is ch9200_mdio_read(). ch9200_mdio_read() utilises a local buffer called "buff", which is initialised with control_read(). However "buff" is conditionally initialised inside control_read(): if (err == size) { memcpy(data, buf, size); } If the condition of "err == size" is not met, then "buff" remains uninitialised. Once this happens the uninitialised "buff" is accessed and returned during ch9200_mdio_read(): return (buff[0] | buff[1] << 8); The problem stems from the fact that ch9200_mdio_read() ignores the return value of control_read(), leading to uinit-access of "buff". To fix this we should check the return value of control_read() and return early on error.
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 4.3.1 hingga sebelum 5.4.295 |
| linux | linux kernel | Versi 5.5 hingga sebelum 5.10.239 |
| linux | linux kernel | Versi 5.11 hingga sebelum 5.15.186 |
| linux | linux kernel | Versi 5.16 hingga sebelum 6.1.142 |
| linux | linux kernel | Versi 6.2 hingga sebelum 6.6.95 |
| linux | linux kernel | Versi 6.7 hingga sebelum 6.12.35 |
| linux | linux kernel | Versi 6.13 hingga sebelum 6.15.4 |
| linux | linux kernel | Versi 4.3 |
| linux | linux kernel | Versi 4.3 rc3 |
| linux | linux kernel | Versi 4.3 rc4 |
| linux | linux kernel | Versi 4.3 rc5 |
| linux | linux kernel | Versi 4.3 rc6 |
| linux | linux kernel | Versi 4.3 rc7 |
| debian | debian linux | Versi 11.0 |