发布于3月6日3月6日 Members Debian: CVE-2024-35900: linux -- security update Severity 4 CVSS (AV:L/AC:M/Au:N/C:P/I:P/A:P) Published 05/19/2024 Created 06/28/2024 Added 06/27/2024 Modified 07/03/2024 Description In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: reject new basechain after table flag update When dormant flag is toggled, hooks are disabled in the commit phase by iterating over current chains in table (existing and new). The following configuration allows for an inconsistent state: add table x add chain x y { type filter hook input priority 0; } add table x { flags dormant; } add chain x w { type filter hook input priority 1; } which triggers the following warning when trying to unregister chain w which is already unregistered. [127.322252] WARNING: CPU: 7 PID: 1211 at net/netfilter/core.c:50 1 __nf_unregister_net_hook+0x21a/0x260 [...] [127.322519] Call Trace: [127.322521]<TASK> [127.322524]? __warn+0x9f/0x1a0 [127.322531]? __nf_unregister_net_hook+0x21a/0x260 [127.322537]? report_bug+0x1b1/0x1e0 [127.322545]? handle_bug+0x3c/0x70 [127.322552]? exc_invalid_op+0x17/0x40 [127.322556]? asm_exc_invalid_op+0x1a/0x20 [127.322563]? kasan_save_free_info+0x3b/0x60 [127.322570]? __nf_unregister_net_hook+0x6a/0x260 [127.322577]? __nf_unregister_net_hook+0x21a/0x260 [127.322583]? __nf_unregister_net_hook+0x6a/0x260 [127.322590]? __nf_tables_unregister_hook+0x8a/0xe0 [nf_tables] [127.322655]nft_table_disable+0x75/0xf0 [nf_tables] [127.322717]nf_tables_commit+0x2571/0x2620 [nf_tables] Solution(s) debian-upgrade-linux References https://attackerkb.com/topics/cve-2024-35900 CVE - 2024-35900 DLA-3842-1
