CVE-2026-98322netfilter: nft_nat: fully initialise new_addr in netmap setup
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 6, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 3ff7ddb1353da9b535e65702704cbadea1da9a00 before 29365695842db0a97b701a43a09fad1b4f7ecf3e; from 3ff7ddb1353da9b535e65702704cbadea1da9a00 before 7b9380c38c2fd2189416fa602bdbc5c8523b84b2; from 3ff7ddb1353da9b535e65702704cbadea1da9a00 before eb2030137dba3b59cbb5057a33af70488d6bc231; from 3ff7ddb1353da9b535e65702704cbadea1da9a00 before e4982c489ee359162eee3ece1fb36082648464a5; from 3ff7ddb1353da9b535e65702704cbadea1da9a00 before 161f5860c92a8ec80b6bdff16e79d70dcd8afc5a; 3ff7ddb1353da9b535e65702704cbadea1da9a00 builds before 0ce42c7b84032335abff9eac43762e4ca8224451; 3ff7ddb1353da9b535e65702704cbadea1da9a00 builds before 1c43f5db482f74b41987c39c9c375a5e767556eb; from 3ff7ddb1353da9b535e65702704cbadea1da9a00 before d313499df66159b4b7971d760d16729598ab7e5a | CNA record |
References
- https://git.kernel.org/stable/c/29365695842db0a97b701a43a09fad1b4f7ecf3e
- https://git.kernel.org/stable/c/7b9380c38c2fd2189416fa602bdbc5c8523b84b2
- https://git.kernel.org/stable/c/eb2030137dba3b59cbb5057a33af70488d6bc231
- https://git.kernel.org/stable/c/e4982c489ee359162eee3ece1fb36082648464a5
- https://git.kernel.org/stable/c/161f5860c92a8ec80b6bdff16e79d70dcd8afc5a
- https://git.kernel.org/stable/c/0ce42c7b84032335abff9eac43762e4ca8224451
- https://git.kernel.org/stable/c/1c43f5db482f74b41987c39c9c375a5e767556eb
- https://git.kernel.org/stable/c/d313499df66159b4b7971d760d16729598ab7e5a
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.