netfilter: nf_conntrack: use get_unaligned_be32() in tcp_sack()
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack: use get_unaligned_be32() in tcp_sack() The timestamp-only fast path dereferences the option stream as *(__be32 *)ptr, which assumes 4-byte alignment that the TCP option stream does not guarantee. Use get_unaligned_be32() instead, which reads the value safely and already returns host byte order, so the htonl() on the comparison constant can be dropped. This matches the existing get_unaligned_be32() use later in the same function.
CVE-2026-97417
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-2026-97417
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": "bb9fc37358ffa9de1cc2b2b6f1a559b926ef50d9",
"lessThan": "740ad3d17a281f7764dda4dbeb37cea52e2e31ae",
"versionType": "git"
},
{
"status": "affected",
"version": "bb9fc37358ffa9de1cc2b2b6f1a559b926ef50d9",
"lessThan": "a0523267de2523522b0f70972dd1ffa22ec6176c",
"versionType": "git"
},
{
"status": "affected",
"version": "bb9fc37358ffa9de1cc2b2b6f1a559b926ef50d9",
"lessThan": "55bcc3376cd7b18954cc9814da697504fdaf12bf",
"versionType": "git"
},
{
"status": "affected",
"version": "bb9fc37358ffa9de1cc2b2b6f1a559b926ef50d9",
"lessThan": "0d5ad732e4fdc569eb85861115e8f7b4c2c67852",
"versionType": "git"
},
{
"status": "affected",
"version": "bb9fc37358ffa9de1cc2b2b6f1a559b926ef50d9",
"lessThan": "7ecfa46a536578a7ed335ddf31a854127268c27c",
"versionType": "git"
},
{
"status": "affected",
"version": "bb9fc37358ffa9de1cc2b2b6f1a559b926ef50d9",
"lessThan": "4abc1af7ac209c066f4e5dd75cdd56876e5829a9",
"versionType": "git"
},
{
"status": "affected",
"version": "bb9fc37358ffa9de1cc2b2b6f1a559b926ef50d9",
"lessThan": "d3bf9eae486490832bd08fd62ab0ac601f346bd4",
"versionType": "git"
}
],
"programFiles": [
"net/netfilter/nf_conntrack_proto_tcp.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.1"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.1",
"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": "6.12.111",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.53",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/netfilter/nf_conntrack_proto_tcp.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-97417
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #8309 · Revision 1
- Added to Heist Feed
- Publisher date