CVE-2022-48643

published 2024-04-28

CVE-2022-48643: In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: fix nft_counters_enabled underflow at nf_tables_addchain() syzbot is…

Priority P4 17 medium 5.5 CVSS 3.1

AV L AC L PR L UI N S U C N I N A H

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().

Affected

16 ranges

Vendor	Product	Version range	Fixed in
debian	linux	< linux 6.0.2-1 (bookworm)	linux 6.0.2-1 (bookworm)
linux	linux	>= 43eb8949cfdffa764b92bc6c54b87cbe5b0003fe < 921ebde3c0d22c8cba74ce8eb3cc4626abff1ccd	921ebde3c0d22c8cba74ce8eb3cc4626abff1ccd
linux	linux	>= 5.10.140 < 5.10.146	5.10.146
linux	linux	>= 5.15.64 < 5.15.71	5.15.71
linux	linux	>= 5.19.6 < 5.19.12	5.19.12
linux	linux	>= 6d7ddee503951641f3ec6f0e3269446970bbcdab < 91aa52652f4b37089aff3cb53e83049d826fef6d	91aa52652f4b37089aff3cb53e83049d826fef6d
linux	linux	>= 98a621ef45e3605c7487f7fa6fec7df94697d6a2 < 8bcad2a931313aeba076b76922d5813ef97d0a91	8bcad2a931313aeba076b76922d5813ef97d0a91
linux	linux	>= c907dfe4eaca9665694a0340de1458a093abe354 < 710e3f526bd23a0d33435dedc52c3144de284378	710e3f526bd23a0d33435dedc52c3144de284378
linux	linux_kernel	—	—
linux	linux_kernel	>= 0 < 5.10.148-1	5.10.148-1
linux	linux_kernel	>= 0 < 6.0.2-1	6.0.2-1
linux	linux_kernel	>= 0 < 6.0.2-1	6.0.2-1
linux	linux_kernel	>= 0 < 6.0.2-1	6.0.2-1
linux	linux_kernel	>= 5.10.140 < 5.10.146	5.10.146
linux	linux_kernel	>= 5.15.64 < 5.15.71	5.15.71
linux	linux_kernel	>= 5.19.6 < 5.19.12	5.19.12

CVSS provenance

nvd v3.1 5.5 MEDIUM CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

osv 5.5 MEDIUM

vendor_debian 5.5 MEDIUM

vendor_redhat 5.5 MEDIUM

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CWE-191