CVE-2023-54035

netfilter: nf_tables: fix underflow in chain reference counter

State: Published
Severity: 7.8 High
Published: Dec 24, 2025
Updated: Aug 5, 2026
Reserved: Dec 24, 2025

Description

In the Linux kernel, the following vulnerability has been resolved:

netfilter: nf_tables: fix underflow in chain reference counter

Set element addition error path decrements reference counter on chains twice: once on element release and again via nft_data_release().

Then, d6b478666ffa ("netfilter: nf_tables: fix underflow in object reference counter") incorrectly fixed this by removing the stateful object reference count decrement.

Restore the stateful object decrement as in b91d90368837 ("netfilter: nf_tables: fix leaking object reference count") and let nft_data_release() decrement the chain reference counter, so this is done only once.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	35651fde1a7bb54dde0a46d35cd0d7136869ae86 to before b068314fd8ce751a7f906e55bb90f3551815f1a0Affected 628bd3e49cba1c066228e23d71a852c23e26da73 to before 9c959671abc7d4ffdf34eed10c64492d43cb6a3cAffected 628bd3e49cba1c066228e23d71a852c23e26da73 to before b389139f12f287b8ed2e2628b72df89a081f0b59Affected bc9f791d2593f17e39f87c6e2b3a36549a3705b1Affected 3c7ec098e3b588434a8b07ea9b5b36f04cef1f50Affected a136b7942ad2a50de708f76ea299ccb45ac7a7f9Affected 25aa2ad37c2162be1c0bc4fe6397f7e4c13f00f8Affected d60be2da67d172aecf866302c91ea11533eca4d9Affected dc7cdf8cbcbf8b13de1df93f356ec04cdeef5c41Affected 4.19.316 to before 4.20Affected 5.4.262 to before 5.5Affected 5.10.188 to before 5.11Affected 5.15.121 to before 5.16Affected 6.3.10 to before 6.4Affected
LinuxLinux	6.4Affected before 6.4Not affected 6.4.4 through 6.4.*Not affected 6.5 and laterNot affected

Product

Versions

LinuxLinux

35651fde1a7bb54dde0a46d35cd0d7136869ae86 to before b068314fd8ce751a7f906e55bb90f3551815f1a0Affected
628bd3e49cba1c066228e23d71a852c23e26da73 to before 9c959671abc7d4ffdf34eed10c64492d43cb6a3cAffected
628bd3e49cba1c066228e23d71a852c23e26da73 to before b389139f12f287b8ed2e2628b72df89a081f0b59Affected
bc9f791d2593f17e39f87c6e2b3a36549a3705b1Affected
3c7ec098e3b588434a8b07ea9b5b36f04cef1f50Affected
a136b7942ad2a50de708f76ea299ccb45ac7a7f9Affected
25aa2ad37c2162be1c0bc4fe6397f7e4c13f00f8Affected
d60be2da67d172aecf866302c91ea11533eca4d9Affected
dc7cdf8cbcbf8b13de1df93f356ec04cdeef5c41Affected
4.19.316 to before 4.20Affected
5.4.262 to before 5.5Affected
5.10.188 to before 5.11Affected
5.15.121 to before 5.16Affected
6.3.10 to before 6.4Affected

LinuxLinux

6.4Affected
before 6.4Not affected
6.4.4 through 6.4.*Not affected
6.5 and laterNot affected

References

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