CVE-2026-43101 Details
Description
In the Linux kernel, the following vulnerability has been resolved: ipv6: ioam: fix potential NULL dereferences in __ioam6_fill_trace_data() We need to check __in6_dev_get() for possible NULL value, as suggested by Yiming Qian. Also add skb_dst_dev_rcu() instead of skb_dst_dev(), and two missing READ_ONCE(). Note that @dev can't be NULL.
A vulnerability in the Linux kernel's IPv6 IOAM (In-situ Operations, Administration, and Maintenance) implementation could lead to NULL pointer dereferences. This issue arises in the '__ioam6_fill_trace_data' function, where the code fails to properly check for NULL values in certain device-related functions. The vulnerability has been addressed by adding the necessary NULL checks and updating the data handling to prevent potential crashes.
Users can upgrade to the latest version of the Linux kernel where this vulnerability has been fixed. Instructions for downloading the patched version are available on the official Linux kernel website.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/3719c234fa94c37c955b1ecd3742ef280ec135e6 | kernel.org | Patch |
| https://git.kernel.org/stable/c/4198aab6f000b4febb18ea820fea20634dd789c7 | kernel.org | Patch |
| https://git.kernel.org/stable/c/4e65a8b8daa18d63255ec58964dd192c7fdd9f8b | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-476 | NULL Pointer Dereference | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 5.15, < 6.18.24 >= 6.19, < 6.19.14 7.0 rc1 7.0 rc2 7.0 rc3 7.0 rc4 7.0 rc5 7.0 rc6 7.0 rc7 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| May 11, 2026 | Initial Analysis | [email protected] |
| May 8, 2026 | CVE Modified | kernel.org |
| May 6, 2026 | New CVE Received | kernel.org |