CVE-2026-23442

MEDIUM EPSS 2.4%
Published Apr 3, 20262mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Apr 3, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: ipv6: add NULL checks for idev in SRv6 paths __in6_dev_get() can return NULL when the device has no IPv6 configuration (e.g. MTU < IPV6_MIN_MTU or after NETDEV_UNREGISTER). Add NULL checks for idev returned by __in6_dev_get() in both seg6_hmac_validate_skb() and ipv6_srh_rcv() to prevent potential NULL pointer dereferences.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
2.4% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 10

VendorProductVersionRange
linuxlinux_kernel*≥4.10.1  –  <6.12.83
linuxlinux_kernel*≥6.13  –  <6.19.10
linuxlinux_kernel4.10any
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/0348fa0ada37cef7c6b5ab2a428bb2c6aee784e4
  • git.kernel.org https://git.kernel.org/stable/c/06413793526251870e20402c39930804f14d59c0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/50352fc103928e10e8729abc79a0d05abef26c4d
  • git.kernel.org https://git.kernel.org/stable/c/83d705d35e583cb1b1eacf196dfe7b77d442018e
  • git.kernel.org https://git.kernel.org/stable/c/a25853c9feea7bbf31d157ff6e004d2d3b4f7f13
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bc9843c39f9932a8b36efd1d362ea00bb88e4e78
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c5cedee5d97382176573bbe21e1724e737a5eb64
  • git.kernel.org https://git.kernel.org/stable/c/d1bd8b9edc6752d10f84d28ff64f842401ce336d

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/06413793526251870e20402c39930804f14d59c0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a25853c9feea7bbf31d157ff6e004d2d3b4f7f13
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bc9843c39f9932a8b36efd1d362ea00bb88e4e78
    Patch