Answer in brief
CVE-2023-54035 records a High severity (CVSS 7.8) vulnerability in netfilter: nf_tables: fix underflow in chain reference counter. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=35651fde1a7bb54dde0a46d35cd0d7136869ae86 <b068314fd8ce751a7f906e55bb90f3551815f1a0 || >=628bd3e49cba1c066228e23d71a852c23e26da73 <9c959671abc7d4ffdf34eed10c64492d43cb6a3c || >=628bd3e49cba1c066228e23d71a852c23e26da73 <b389139f12f287b8ed2e2628b72df89a081f0b59 || bc9f791d2593f17e39f87c6e2b3a36549a3705b1 || 3c7ec098e3b588434a8b07ea9b5b36f04cef1f50 || a136b7942ad2a50de708f76ea299ccb45ac7a7f9 || 25aa2ad37c2162be1c0bc4fe6397f7e4c13f00f8 || d60be2da67d172aecf866302c91ea11533eca4d9 || dc7cdf8cbcbf8b13de1df93f356ec04cdeef5c41 || >=4.19.316 <4.20 || >=5.4.262 <5.5 || >=5.10.188 <5.11 || >=5.15.121 <5.16 || >=6.3.10 <6.4 | b068314fd8ce751a7f906e55bb90f3551815f1a0, 9c959671abc7d4ffdf34eed10c64492d43cb6a3c, b389139f12f287b8ed2e2628b72df89a081f0b59, 4.20, 5.5, 5.11, 5.16, 6.4 |
| Linux/Linuxgeneric | 6.4 | Not reported |
Published upstream
Dec 24, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 4, 2026
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.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2023-54035 records a High severity (CVSS 7.8) vulnerability in netfilter: nf_tables: fix underflow in chain reference counter. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=35651fde1a7bb54dde0a46d35cd0d7136869ae86 <b068314fd8ce751a7f906e55bb90f3551815f1a0 || >=628bd3e49cba1c066228e23d71a852c23e26da73 <9c959671abc7d4ffdf34eed10c64492d43cb6a3c || >=628bd3e49cba1c066228e23d71a852c23e26da73 <b389139f12f287b8ed2e2628b72df89a081f0b59 || bc9f791d2593f17e39f87c6e2b3a36549a3705b1 || 3c7ec098e3b588434a8b07ea9b5b36f04cef1f50 || a136b7942ad2a50de708f76ea299ccb45ac7a7f9 || 25aa2ad37c2162be1c0bc4fe6397f7e4c13f00f8 || d60be2da67d172aecf866302c91ea11533eca4d9 || dc7cdf8cbcbf8b13de1df93f356ec04cdeef5c41 || >=4.19.316 <4.20 || >=5.4.262 <5.5 || >=5.10.188 <5.11 || >=5.15.121 <5.16 || >=6.3.10 <6.4 | b068314fd8ce751a7f906e55bb90f3551815f1a0, 9c959671abc7d4ffdf34eed10c64492d43cb6a3c, b389139f12f287b8ed2e2628b72df89a081f0b59, 4.20, 5.5, 5.11, 5.16, 6.4 |
| Linux/Linuxgeneric | 6.4 | Not reported |
Published upstream
Dec 24, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 4, 2026
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.
Quoted source text, attributed separately from HOL analysis.