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cve416baaa9-dc9f-4396-8d5f-8c081fb06d67CVE-2022-48643
HistoryApr 28, 2024 - 1:15 p.m.

CVE-2022-48643

2024-04-2813:15:07
416baaa9-dc9f-4396-8d5f-8c081fb06d67
web.nvd.nist.gov
22
linux kernel
nf_tables
netfilter vulnerability
syzbot reporting
counter underflow

7.4 High

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

14.6%

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().

7.4 High

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

14.6%

Related for CVE-2022-48643