CVSS 5.5 · Medium EPSS 0,26%
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: wifi: mac80211: Don't finalize CSA in IBSS mode if state is disconnected When we are not connected to a channel, sending channel "switch" announcement doesn't make any sense. The BSS list is empty in that case. This causes the for loop in cfg80211_get_bss() to be bypassed, so the function returns NULL (check line 1424 of net/wireless/scan.c), causing the WARN_ON() in ieee80211_ibss_csa_beacon() to get triggered (check line 500 of net/mac80211/ibss.c), which was consequently reported on the syzkaller dashboard. Thus, check if we have an existing connection before generating the CSA beacon in ieee80211_ibss_finish_csa().
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 3.13 hingga sebelum 4.9.328 |
| linux | linux kernel | Versi 4.10 hingga sebelum 4.14.293 |
| linux | linux kernel | Versi 4.15 hingga sebelum 4.19.258 |
| linux | linux kernel | Versi 4.20 hingga sebelum 5.4.213 |
| linux | linux kernel | Versi 5.5 hingga sebelum 5.10.142 |
| linux | linux kernel | Versi 5.11 hingga sebelum 5.15.66 |
| linux | linux kernel | Versi 5.16 hingga sebelum 5.19.8 |
| linux | linux kernel | Versi 6.0 rc1 |
| linux | linux kernel | Versi 6.0 rc2 |
| linux | linux kernel | Versi 6.0 rc3 |