netfilter: nft_nat: fully initialise new_addr in netmap setup
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.
CVE-2026-98322
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-98322
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3ff7ddb1353da9b535e65702704cbadea1da9a00",
"lessThan": "29365695842db0a97b701a43a09fad1b4f7ecf3e",
"versionType": "git"
},
{
"status": "affected",
"version": "3ff7ddb1353da9b535e65702704cbadea1da9a00",
"lessThan": "7b9380c38c2fd2189416fa602bdbc5c8523b84b2",
"versionType": "git"
},
{
"status": "affected",
"version": "3ff7ddb1353da9b535e65702704cbadea1da9a00",
"lessThan": "eb2030137dba3b59cbb5057a33af70488d6bc231",
"versionType": "git"
},
{
"status": "affected",
"version": "3ff7ddb1353da9b535e65702704cbadea1da9a00",
"lessThan": "e4982c489ee359162eee3ece1fb36082648464a5",
"versionType": "git"
},
{
"status": "affected",
"version": "3ff7ddb1353da9b535e65702704cbadea1da9a00",
"lessThan": "161f5860c92a8ec80b6bdff16e79d70dcd8afc5a",
"versionType": "git"
},
{
"status": "affected",
"version": "3ff7ddb1353da9b535e65702704cbadea1da9a00",
"lessThan": "0ce42c7b84032335abff9eac43762e4ca8224451",
"versionType": "git"
},
{
"status": "affected",
"version": "3ff7ddb1353da9b535e65702704cbadea1da9a00",
"lessThan": "1c43f5db482f74b41987c39c9c375a5e767556eb",
"versionType": "git"
},
{
"status": "affected",
"version": "3ff7ddb1353da9b535e65702704cbadea1da9a00",
"lessThan": "d313499df66159b4b7971d760d16729598ab7e5a",
"versionType": "git"
}
],
"programFiles": [
"net/netfilter/nft_nat.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.8"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.8",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.271",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.222",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.189",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.158",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.112",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.54",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.8",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/netfilter/nft_nat.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98322
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #38401 · Revision 1
- Added to Heist Feed
- Publisher date