vulnerability

Debian: CVE-2022-48643: linux -- security update

Severity
6
CVSS
(AV:L/AC:L/Au:S/C:C/I:N/A:C)
Published
04/28/2024
Added
07/30/2024
Modified
02/20/2025

Description

In the Linux kernel, the following vulnerability has been resolved:

netfilter: nf_tables: fix nft_counters_enabled underflow at nf_tables_addchain()

syzbot is reporting underflow of nft_counters_enabled counter at
nf_tables_addchain() [1], for commit 43eb8949cfdffa76 ("netfilter:
nf_tables: do not leave chain stats enabled on error") missed that
nf_tables_chain_destroy() after nft_basechain_init() in the error path of
nf_tables_addchain() decrements the counter because nft_basechain_init()
makes nft_is_base_chain() return true by setting NFT_CHAIN_BASE flag.

Increment the counter immediately after returning from
nft_basechain_init().

Solution

debian-upgrade-linux
Title
NEW

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