CVE-2026-23442

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-23442
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.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/0348fa0ada37cef7c6b5ab2a428bb2c6aee784e4
https://git.kernel.org/stable/c/06413793526251870e20402c39930804f14d59c0 Patch
https://git.kernel.org/stable/c/50352fc103928e10e8729abc79a0d05abef26c4d
https://git.kernel.org/stable/c/83d705d35e583cb1b1eacf196dfe7b77d442018e
https://git.kernel.org/stable/c/a25853c9feea7bbf31d157ff6e004d2d3b4f7f13 Patch
https://git.kernel.org/stable/c/bc9843c39f9932a8b36efd1d362ea00bb88e4e78 Patch
https://git.kernel.org/stable/c/c5cedee5d97382176573bbe21e1724e737a5eb64
https://git.kernel.org/stable/c/d1bd8b9edc6752d10f84d28ff64f842401ce336d
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.10:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*
History

01 Jun 2026, 17:16

Type Values Removed Values Added
References
  • () https://git.kernel.org/stable/c/0348fa0ada37cef7c6b5ab2a428bb2c6aee784e4 -
  • () https://git.kernel.org/stable/c/83d705d35e583cb1b1eacf196dfe7b77d442018e -
  • () https://git.kernel.org/stable/c/d1bd8b9edc6752d10f84d28ff64f842401ce336d -

27 Apr 2026, 14:16

Type Values Removed Values Added
References
  • () https://git.kernel.org/stable/c/50352fc103928e10e8729abc79a0d05abef26c4d -
  • () https://git.kernel.org/stable/c/c5cedee5d97382176573bbe21e1724e737a5eb64 -

23 Apr 2026, 20:58

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/06413793526251870e20402c39930804f14d59c0 - () https://git.kernel.org/stable/c/06413793526251870e20402c39930804f14d59c0 - Patch
References () https://git.kernel.org/stable/c/a25853c9feea7bbf31d157ff6e004d2d3b4f7f13 - () https://git.kernel.org/stable/c/a25853c9feea7bbf31d157ff6e004d2d3b4f7f13 - Patch
References () https://git.kernel.org/stable/c/bc9843c39f9932a8b36efd1d362ea00bb88e4e78 - () https://git.kernel.org/stable/c/bc9843c39f9932a8b36efd1d362ea00bb88e4e78 - Patch
CPE cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.10:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
CWE CWE-476
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
First Time Linux
Linux linux Kernel

22 Apr 2026, 13:16

Type Values Removed Values Added
References
  • () https://git.kernel.org/stable/c/bc9843c39f9932a8b36efd1d362ea00bb88e4e78 -

03 Apr 2026, 16:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-04-03 16:16

Updated : 2026-06-01 17:16

NVD link : CVE-2026-23442

Mitre link : CVE-2026-23442

CVE.ORG link : CVE-2026-23442

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-476

NULL Pointer Dereference