NULL Pointer Dereference Affecting linux-qemu-6.18 package, versions <6.18.31-r0


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.59% (48th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-CHAINGUARDLATEST-LINUXQEMU618-16743263
  • published18 May 2026
  • disclosed6 May 2026

Introduced: 6 May 2026

CVE-2026-43101  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Chainguard linux-qemu-6.18 to version 6.18.31-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream linux-qemu-6.18 package and not the linux-qemu-6.18 package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

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 Base Scores

version 3.1