CVSS 3.3 · Low EPSS 0,77%
Kerentanan pada linux kernel. Skor CVSS 3.1 3.3 (Low) menurut NVD.
In the Linux kernel, the following vulnerability has been resolved: tcp: avoid too many retransmit packets If a TCP socket is using TCP_USER_TIMEOUT, and the other peer retracted its window to zero, tcp_retransmit_timer() can retransmit a packet every two jiffies (2 ms for HZ=1000), for about 4 minutes after TCP_USER_TIMEOUT has 'expired'. The fix is to make sure tcp_rtx_probe0_timed_out() takes icsk->icsk_user_timeout into account. Before blamed commit, the socket would not timeout after icsk->icsk_user_timeout, but would use standard exponential backoff for the retransmits. Also worth noting that before commit e89688e3e978 ("net: tcp: fix unexcepted socket die when snd_wnd is 0"), the issue would last 2 minutes instead of 4.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
· uraikan di kalkulator | Vendor | Produk | Versi terdampak |
|---|---|---|
| linux | linux kernel | Versi 4.19 hingga sebelum 5.4.280 |
| linux | linux kernel | Versi 5.5 hingga sebelum 5.10.222 |
| linux | linux kernel | Versi 5.11 hingga sebelum 5.15.163 |
| linux | linux kernel | Versi 5.16 hingga sebelum 6.1.100 |
| linux | linux kernel | Versi 6.2 hingga sebelum 6.6.41 |
| linux | linux kernel | Versi 6.7 hingga sebelum 6.9.10 |