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Vulnerability record · CVE-2026-43101 · published 6 May 2026

CVE-2026-43101: Linux kernel null pointer dereference vulnerability

Linux · Linux Kernel

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.

7.5 CVSS 3.1 High EPSS 0.61% · top 53.0% CWE-476 · NULL pointer dereference
7.5CVSS 3.1 base score
0.61%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/3719c234fa94c37c955b1ecd3742ef280ec135e6 Patch
https://git.kernel.org/stable/c/4198aab6f000b4febb18ea820fea20634dd789c7 Patch
https://git.kernel.org/stable/c/4e65a8b8daa18d63255ec58964dd192c7fdd9f8b Patch

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Source: NIST National Vulnerability Database (record CVE-2026-43101), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.