Description
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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
3ff7ddb1353da9b535e65702704cbadea1da9a00 to < 29365695842db0a97b701a43a09fad1b4f7ecf3eaffected3ff7ddb1353da9b535e65702704cbadea1da9a00 to < 7b9380c38c2fd2189416fa602bdbc5c8523b84b2affected3ff7ddb1353da9b535e65702704cbadea1da9a00 to < eb2030137dba3b59cbb5057a33af70488d6bc231affected3ff7ddb1353da9b535e65702704cbadea1da9a00 to < e4982c489ee359162eee3ece1fb36082648464a5affected3ff7ddb1353da9b535e65702704cbadea1da9a00 to < 161f5860c92a8ec80b6bdff16e79d70dcd8afc5aaffected3ff7ddb1353da9b535e65702704cbadea1da9a00 to < 0ce42c7b84032335abff9eac43762e4ca8224451affected3ff7ddb1353da9b535e65702704cbadea1da9a00 to < 1c43f5db482f74b41987c39c9c375a5e767556ebaffected3ff7ddb1353da9b535e65702704cbadea1da9a00 to < d313499df66159b4b7971d760d16729598ab7e5aaffected
Linux Linux
Default version status: affected
5.8affected0 to < 5.8unaffected5.10.271 to ≤ 5.10.*unaffected5.15.222 to ≤ 5.15.*unaffected6.1.189 to ≤ 6.1.*unaffected6.6.158 to ≤ 6.6.*unaffected6.12.112 to ≤ 6.12.*unaffected6.18.54 to ≤ 6.18.*unaffected7.2.8 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected
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 ↗