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 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().

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/710e3f526bd23a0d33435dedc52c3144de284378	Patch
https://git.kernel.org/stable/c/8bcad2a931313aeba076b76922d5813ef97d0a91	Patch
https://git.kernel.org/stable/c/91aa52652f4b37089aff3cb53e83049d826fef6d	Patch
https://git.kernel.org/stable/c/921ebde3c0d22c8cba74ce8eb3cc4626abff1ccd	Patch
https://git.kernel.org/stable/c/710e3f526bd23a0d33435dedc52c3144de284378	Patch
https://git.kernel.org/stable/c/8bcad2a931313aeba076b76922d5813ef97d0a91	Patch
https://git.kernel.org/stable/c/91aa52652f4b37089aff3cb53e83049d826fef6d	Patch
https://git.kernel.org/stable/c/921ebde3c0d22c8cba74ce8eb3cc4626abff1ccd	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:6.0:rc3::::::
	cpe:2.3:o:linux:linux_kernel:6.0:rc4::::::
	cpe:2.3:o:linux:linux_kernel:6.0:rc5::::::
	cpe:2.3:o:linux:linux_kernel:6.0:rc6::::::

History

No history.

Information

Published : 2024-04-28 13:15

Updated : 2025-09-18 14:06

NVD link : CVE-2022-48643

Mitre link : CVE-2022-48643

CVE.ORG link : CVE-2022-48643

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-191

Integer Underflow (Wrap or Wraparound)

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