CVE-2026-43339

HIGH EPSS 2.2%
Published May 8, 20261mo ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published May 8, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago

Description

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.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
2.2% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 14

VendorProductVersionRange
linuxlinux_kernel*≥4.6  –  <5.10.253
linuxlinux_kernel*≥5.11  –  <5.15.203
linuxlinux_kernel*≥5.16  –  <6.1.168
linuxlinux_kernel*≥6.2  –  <6.6.134
linuxlinux_kernel*≥6.7  –  <6.12.81
linuxlinux_kernel*≥6.13  –  <6.18.22
linuxlinux_kernel*≥6.19  –  <6.19.12
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any

References 8

  • git.kernel.org https://git.kernel.org/stable/c/25357b670afb5b517096da783abaa5cc4bf8359e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2d88ed7fa000e19c2dc0fa31b3a849e3f5bca5c1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3cd4efb5df72843dfac892d0b3c7a4a8bd926b65
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7bfafa1b0cd582983ebec6bb20f0a435528fe567
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7d9f2f4aabd116ca68fbdab5d8fb8dac74c2ea1e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bacc7f31085c9820922f00bc7d79756ffa13123a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/eec49a33611f20336b357b3953df44f1a02049e8
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fd63f185979b047fb22a0dfc6bd94d0cab6a6a70
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/25357b670afb5b517096da783abaa5cc4bf8359e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2d88ed7fa000e19c2dc0fa31b3a849e3f5bca5c1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3cd4efb5df72843dfac892d0b3c7a4a8bd926b65
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7bfafa1b0cd582983ebec6bb20f0a435528fe567
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7d9f2f4aabd116ca68fbdab5d8fb8dac74c2ea1e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bacc7f31085c9820922f00bc7d79756ffa13123a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/eec49a33611f20336b357b3953df44f1a02049e8
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fd63f185979b047fb22a0dfc6bd94d0cab6a6a70
    Patch