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().
Metrics
CVSS 3.1 5.5/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= c907dfe4eaca9665694a0340de1458a093abe354, < 710e3f526bd23a0d33435dedc52c3144de284378; >= 6d7ddee503951641f3ec6f0e3269446970bbcdab, < 91aa52652f4b37089aff3cb53e83049d826fef6d; >= 98a621ef45e3605c7487f7fa6fec7df94697d6a2, < 8bcad2a931313aeba076b76922d5813ef97d0a91; >= 43eb8949cfdffa764b92bc6c54b87cbe5b0003fe, < 921ebde3c0d22c8cba74ce8eb3cc4626abff1ccd |
| Linux | Linux | >= 5.10.140, < 5.10.146; >= 5.15.64, < 5.15.71; >= 5.19.6, < 5.19.12 |
References
- https://git.kernel.org/stable/c/710e3f526bd23a0d33435dedc52c3144de284378Patch
- https://git.kernel.org/stable/c/8bcad2a931313aeba076b76922d5813ef97d0a91Patch
- https://git.kernel.org/stable/c/91aa52652f4b37089aff3cb53e83049d826fef6dPatch
- https://git.kernel.org/stable/c/921ebde3c0d22c8cba74ce8eb3cc4626abff1ccdPatch
- https://git.kernel.org/stable/c/710e3f526bd23a0d33435dedc52c3144de284378Patch
- https://git.kernel.org/stable/c/8bcad2a931313aeba076b76922d5813ef97d0a91Patch
- https://git.kernel.org/stable/c/91aa52652f4b37089aff3cb53e83049d826fef6dPatch
- https://git.kernel.org/stable/c/921ebde3c0d22c8cba74ce8eb3cc4626abff1ccdPatch
Timeline
- Published
- Apr 28, 2024
- Last modified
- Jun 17, 2026
- NVD status
- Analyzed