| Summary: |
VUL-0: CVE-2022-48643: kernel: netfilter: nf_tables: fix nft_counters_enabled underflow at nf_tables_addchain() |
| Product: |
[Novell Products] SUSE Security Incidents
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Reporter: |
SMASH SMASH <smash_bz> |
| Component: |
Incidents | Assignee: |
Kernel Bugs <kernel-bugs> |
| Status: |
RESOLVED
FIXED
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QA Contact: |
Security Team bot <security-team> |
| Severity: |
Normal
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| Priority: |
P5 - None
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CC: |
rfrohl
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| Version: |
unspecified | |
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| Target Milestone: |
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| Hardware: |
Other | |
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| OS: |
Other | |
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| URL: |
https://smash.suse.de/issue/403400/
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| Whiteboard: |
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Found By:
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Security Response Team
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Services Priority:
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Business Priority:
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Blocker:
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Marketing QA Status:
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IT Deployment:
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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(). References: http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-48643 https://www.cve.org/CVERecord?id=CVE-2022-48643 https://git.kernel.org/stable/c/710e3f526bd23a0d33435dedc52c3144de284378 https://git.kernel.org/stable/c/8bcad2a931313aeba076b76922d5813ef97d0a91 https://git.kernel.org/stable/c/91aa52652f4b37089aff3cb53e83049d826fef6d https://git.kernel.org/stable/c/921ebde3c0d22c8cba74ce8eb3cc4626abff1ccd https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2022/CVE-2022-48643.mbox