Answer in brief
CVE-2026-98322 records a Unknown severity vulnerability in netfilter: nft_nat: fully initialise new_addr in netmap setup. 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.
A CVSS score is not reported in the current record. 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 | >=3ff7ddb1353da9b535e65702704cbadea1da9a00 <29365695842db0a97b701a43a09fad1b4f7ecf3e || >=3ff7ddb1353da9b535e65702704cbadea1da9a00 <7b9380c38c2fd2189416fa602bdbc5c8523b84b2 || >=3ff7ddb1353da9b535e65702704cbadea1da9a00 <eb2030137dba3b59cbb5057a33af70488d6bc231 || >=3ff7ddb1353da9b535e65702704cbadea1da9a00 <e4982c489ee359162eee3ece1fb36082648464a5 || >=3ff7ddb1353da9b535e65702704cbadea1da9a00 <161f5860c92a8ec80b6bdff16e79d70dcd8afc5a || >=3ff7ddb1353da9b535e65702704cbadea1da9a00 <0ce42c7b84032335abff9eac43762e4ca8224451 || >=3ff7ddb1353da9b535e65702704cbadea1da9a00 <1c43f5db482f74b41987c39c9c375a5e767556eb || >=3ff7ddb1353da9b535e65702704cbadea1da9a00 <d313499df66159b4b7971d760d16729598ab7e5a | 29365695842db0a97b701a43a09fad1b4f7ecf3e, 7b9380c38c2fd2189416fa602bdbc5c8523b84b2, eb2030137dba3b59cbb5057a33af70488d6bc231, e4982c489ee359162eee3ece1fb36082648464a5, 161f5860c92a8ec80b6bdff16e79d70dcd8afc5a, 0ce42c7b84032335abff9eac43762e4ca8224451, 1c43f5db482f74b41987c39c9c375a5e767556eb, d313499df66159b4b7971d760d16729598ab7e5a |
| Linux/Linuxgeneric | 5.8 | Not reported |
Published upstream
Oct 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 6, 2026
In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_nat: fully initialise new_addr in netmap setup nft_nat_setup_netmap() builds the mapped address in an on-stack union nf_inet_addr. For an IPv4 mapping it writes only the 4-byte .ip member and the loop runs a single 32-bit iteration, but it then copies the whole 16-byte union into range->min_addr and range->max_addr, so the upper 12 bytes reach nf_nat_setup_info() uninitialised. KMSAN reports an uninit-value in nf_nat_setup_info() reached from nft_nat_eval(). The IPv6 path fills all 16 bytes and is not affected. Zero-initialise new_addr.
Quoted source text, attributed separately from HOL analysis.