CVE-2026-23442
MEDIUM EPSS 2.4%
Published Apr 3, 20262mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
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
Exploitability
Impact
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
References 8
- git.kernel.org https://git.kernel.org/stable/c/0348fa0ada37cef7c6b5ab2a428bb2c6aee784e4
- git.kernel.org https://git.kernel.org/stable/c/06413793526251870e20402c39930804f14d59c0
- 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
- git.kernel.org https://git.kernel.org/stable/c/bc9843c39f9932a8b36efd1d362ea00bb88e4e78
- 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
- git.kernel.org https://git.kernel.org/stable/c/a25853c9feea7bbf31d157ff6e004d2d3b4f7f13
- git.kernel.org https://git.kernel.org/stable/c/bc9843c39f9932a8b36efd1d362ea00bb88e4e78