CVE-2024-35900

CVE Details

Release Date:

2024-05-19

Description

In the Linux kernel, the following vulnerability has been resolved:\nnetfilter: nf_tables: reject new basechain after table flag update\nWhen dormant flag is toggled, hooks are disabled in the commit phase by\niterating over current chains in table (existing and new).\nThe following configuration allows for an inconsistent state:\nadd table x\nadd chain x y { type filter hook input priority 0; }\nadd table x { flags dormant; }\nadd chain x w { type filter hook input priority 1; }\nwhich triggers the following warning when trying to unregister chain w\nwhich is already unregistered.\n[ 127.322252] WARNING: CPU: 7 PID: 1211 at net/netfilter/core.c:50 1 __nf_unregister_net_hook+0x21a/0x260\n[...]\n[ 127.322519] Call Trace:\n[ 127.322521] \n[ 127.322524] ? __warn+0x9f/0x1a0\n[ 127.322531] ? __nf_unregister_net_hook+0x21a/0x260\n[ 127.322537] ? report_bug+0x1b1/0x1e0\n[ 127.322545] ? handle_bug+0x3c/0x70\n[ 127.322552] ? exc_invalid_op+0x17/0x40\n[ 127.322556] ? asm_exc_invalid_op+0x1a/0x20\n[ 127.322563] ? kasan_save_free_info+0x3b/0x60\n[ 127.322570] ? __nf_unregister_net_hook+0x6a/0x260\n[ 127.322577] ? __nf_unregister_net_hook+0x21a/0x260\n[ 127.322583] ? __nf_unregister_net_hook+0x6a/0x260\n[ 127.322590] ? __nf_tables_unregister_hook+0x8a/0xe0 [nf_tables]\n[ 127.322655] nft_table_disable+0x75/0xf0 [nf_tables]\n[ 127.322717] nf_tables_commit+0x2571/0x2620 [nf_tables]

See more information about CVE-2024-35900 from MITRE CVE dictionary and NIST NVD

CVSS Scoring

NOTE: The following CVSS v3.1 metrics and score provided are preliminary and subject to review.

Base Score:	5.5	CVSS Vector:	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector:	Local network	Attack Complexity:	Low
Privileges Required:	Low	User Interaction:	None
Scope:	Unchanged	Confidentiality Impact:	None
Integrity Impact:	None	Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 8 (kernel)	ELSA-2024-5101	2024-08-08
Oracle Linux version 9 (kernel)	ELSA-2024-9315	2024-11-14