CVE-2023-54035
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.
How to fix
- Linux Linuxb068314fd8ce751a7f906e55bb90f3551815f1a0, 9c959671abc7d4ffdf34eed10c64492d43cb6a3c, b389139f12f287b8ed2e2628b72df89a081f0b59, 4.20, 5.5, 5.11, 5.16, 6.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 35651fde1a7bb54dde0a46d35cd0d7136869ae86 ≤ v < b068314fd8ce751a7f906e55bb90f3551815f1a0, 628bd3e49cba1c066228e23d71a852c23e26da73 ≤ v < 9c959671abc7d4ffdf34eed10c64492d43cb6a3c, 628bd3e49cba1c066228e23d71a852c23e26da73 ≤ v < b389139f12f287b8ed2e2628b72df89a081f0b59, bc9f791d2593f17e39f87c6e2b3a36549a3705b1, 3c7ec098e3b588434a8b07ea9b5b36f04cef1f50, a136b7942ad2a50de708f76ea299ccb45ac7a7f9, 25aa2ad37c2162be1c0bc4fe6397f7e4c13f00f8, d60be2da67d172aecf866302c91ea11533eca4d9, dc7cdf8cbcbf8b13de1df93f356ec04cdeef5c41, 4.19.316 ≤ v < 4.20, 5.4.262 ≤ v < 5.5, 5.10.188 ≤ v < 5.11, 5.15.121 ≤ v < 5.16, 6.3.10 ≤ v < 6.4, 6.4 | b068314fd8ce751a7f906e55bb90f3551815f1a0, 9c959671abc7d4ffdf34eed10c64492d43cb6a3c, b389139f12f287b8ed2e2628b72df89a081f0b59, 4.20, 5.5, 5.11, 5.16, 6.4 |
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