CVSS 9.8 · Critical EPSS 0,30%
Kerentanan Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') pada linux kernel. Skor CVSS 3.1 9.8 (Critical) menurut CNA.
In the Linux kernel, the following vulnerability has been resolved: tcp: fix potential race in tcp_v6_syn_recv_sock() Code in tcp_v6_syn_recv_sock() after the call to tcp_v4_syn_recv_sock() is done too late. After tcp_v4_syn_recv_sock(), the child socket is already visible from TCP ehash table and other cpus might use it. Since newinet->pinet6 is still pointing to the listener ipv6_pinfo bad things can happen as syzbot found. Move the problematic code in tcp_v6_mapped_child_init() and call this new helper from tcp_v4_syn_recv_sock() before the ehash insertion. This allows the removal of one tcp_sync_mss(), since tcp_v4_syn_recv_sock() will call it with the correct context.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
· uraikan di kalkulator | Vendor | Produk | Versi terdampak |
|---|---|---|
| linux | linux kernel | Versi 2.6.12.1 hingga sebelum 6.18.16 |
| linux | linux kernel | Versi 6.19 hingga sebelum 6.19.6 |
| linux | linux kernel | Versi 2.6.12 |
| linux | linux kernel | Versi 2.6.12 rc2 |
| linux | linux kernel | Versi 2.6.12 rc3 |
| linux | linux kernel | Versi 2.6.12 rc4 |
| linux | linux kernel | Versi 2.6.12 rc5 |
| linux | linux kernel | Versi 7.0 rc1 |