ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table()
In the Linux kernel, the following vulnerability has been resolved: ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table() ipv4_sysctl_exit_net() is currently freeing net->ipv4.sysctl_local_reserved_ports too soon. Only after unregister_net_sysctl_table() we can be sure no threads can possibly use the sysctls, including /proc/sys/net/ipv4/ip_local_reserved_ports.
CVE-2026-64002
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-2026-64002
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": "122ff243f5f104194750ecbc76d5946dd1eec934",
"lessThan": "ecf45080a4d3f4526cacb8b14060fe3b49a6913b",
"versionType": "git"
},
{
"status": "affected",
"version": "122ff243f5f104194750ecbc76d5946dd1eec934",
"lessThan": "a0ffc6081a8b27082dd5eae5aa1e3f59bbecf06c",
"versionType": "git"
},
{
"status": "affected",
"version": "122ff243f5f104194750ecbc76d5946dd1eec934",
"lessThan": "5b23a2ff379e70b6b9ff744a972b63e1f8f4d996",
"versionType": "git"
},
{
"status": "affected",
"version": "122ff243f5f104194750ecbc76d5946dd1eec934",
"lessThan": "8e59d4d0dcde2dfb07a7ef855c849a2a0560aa57",
"versionType": "git"
},
{
"status": "affected",
"version": "122ff243f5f104194750ecbc76d5946dd1eec934",
"lessThan": "6512c57c4638ddec113bf42439361ba85a12048d",
"versionType": "git"
},
{
"status": "affected",
"version": "122ff243f5f104194750ecbc76d5946dd1eec934",
"lessThan": "a7f4eefb6e1458431eef9fa20fb363320d185f76",
"versionType": "git"
},
{
"status": "affected",
"version": "122ff243f5f104194750ecbc76d5946dd1eec934",
"lessThan": "155f90be5ee8be5b110ebc0b7da33c54c83b0208",
"versionType": "git"
},
{
"status": "affected",
"version": "122ff243f5f104194750ecbc76d5946dd1eec934",
"lessThan": "87a1e0fe7776da7ab411be332b4be58ac8840d10",
"versionType": "git"
}
],
"programFiles": [
"net/ipv4/sysctl_net_ipv4.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.16"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.16",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.259",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.210",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.176",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.143",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.93",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.35",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.0.12",
"versionType": "semver",
"lessThanOrEqual": "7.0.*"
},
{
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/ipv4/sysctl_net_ipv4.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-64002
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #40927 · Revision 1
- Added to Heist Feed
- Publisher date