CVE-2026-43339

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-43339
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-43339.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-43339
Downstream
Published
2026-05-08T13:31:24.315Z
Modified
2026-05-28T03:52:47.690636769Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
ipv6: prevent possible UaF in addrconf_permanent_addr()
Details

In the Linux kernel, the following vulnerability has been resolved:

ipv6: prevent possible UaF in addrconfpermanentaddr()

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.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43339.json",
    "cna_assigner": "Linux"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
f1705ec197e705b79ea40fe7a2cc5acfa1d3bfac
Fixed
eec49a33611f20336b357b3953df44f1a02049e8
Fixed
bacc7f31085c9820922f00bc7d79756ffa13123a
Fixed
7bfafa1b0cd582983ebec6bb20f0a435528fe567
Fixed
7d9f2f4aabd116ca68fbdab5d8fb8dac74c2ea1e
Fixed
25357b670afb5b517096da783abaa5cc4bf8359e
Fixed
3cd4efb5df72843dfac892d0b3c7a4a8bd926b65
Fixed
2d88ed7fa000e19c2dc0fa31b3a849e3f5bca5c1
Fixed
fd63f185979b047fb22a0dfc6bd94d0cab6a6a70

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-43339.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
4.6.0
Fixed
5.10.253
Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.203
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.1.168
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.134
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.81
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.18.22
Type
ECOSYSTEM
Events
Introduced
6.19.0
Fixed
6.19.12

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-43339.json"