ipv6: prevent possible UaF in addrconf_permanent_addr()
In the Linux kernel, the following vulnerability has been resolved: ipv6: prevent possible UaF in addrconf_permanent_addr() The mentioned helper try to warn the user about an exceptional condition, but the message is delivered too late, accessing the ipv6 after its possible deletion. Reorder the statement to avoid the possible UaF; while at it, place the warning outside the idev->lock as it needs no protection.
CVE-2026-43339
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-2026-43339
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": "f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac",
"lessThan": "eec49a33611f20336b357b3953df44f1a02049e8",
"versionType": "git"
},
{
"status": "affected",
"version": "f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac",
"lessThan": "bacc7f31085c9820922f00bc7d79756ffa13123a",
"versionType": "git"
},
{
"status": "affected",
"version": "f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac",
"lessThan": "7bfafa1b0cd582983ebec6bb20f0a435528fe567",
"versionType": "git"
},
{
"status": "affected",
"version": "f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac",
"lessThan": "7d9f2f4aabd116ca68fbdab5d8fb8dac74c2ea1e",
"versionType": "git"
},
{
"status": "affected",
"version": "f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac",
"lessThan": "25357b670afb5b517096da783abaa5cc4bf8359e",
"versionType": "git"
},
{
"status": "affected",
"version": "f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac",
"lessThan": "3cd4efb5df72843dfac892d0b3c7a4a8bd926b65",
"versionType": "git"
},
{
"status": "affected",
"version": "f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac",
"lessThan": "2d88ed7fa000e19c2dc0fa31b3a849e3f5bca5c1",
"versionType": "git"
},
{
"status": "affected",
"version": "f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac",
"lessThan": "fd63f185979b047fb22a0dfc6bd94d0cab6a6a70",
"versionType": "git"
}
],
"programFiles": [
"net/ipv6/addrconf.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.6"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.6",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.253",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.203",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.168",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.134",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.81",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.22",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19.12",
"versionType": "semver",
"lessThanOrEqual": "6.19.*"
},
{
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/ipv6/addrconf.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-43339
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #40061 · Revision 1
- Added to Heist Feed
- Publisher date