CVE-2026-72249

In the Linux kernel, the following vulnerability has been resolved: netfilter: flowtable: use dst in this direction when pushing IPIP header When pushing the IPIP header, the route of the other direction is used to calculate the headroom, use the route in this direction. Accessing the other tuple to set the IP source and destination is fine because this tuple does not provide such information to avoid storing redundant information. However, this tuple already provides the dst for this direction, this went unnoticed because this bug affects headroom and iph->frag_off only at this stage.

Package Linux Kernel
Published 2026-08-15
Last modified 2026-08-15
Patch available
Yes

Affected versions

Linux kernel versions 6.19 and later are affected. Fixed in 7.1.5, 7.2-rc3 and their respective stable series.

Affected from
≥ 6.19
Fixed in
✓ 7.1.5 7.1.x ✓ 7.2-rc3

References

2 total

Frequently asked questions

  • What is CVE-2026-72249?

    CVE-2026-72249 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.19 onward and has been patched in 7.1.5 and 7.2-rc3. CVE-2026-72249 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • Is there a patch available for CVE-2026-72249?

    Yes. CVE-2026-72249 has been patched. Fixed versions include 7.1.5 and 7.2-rc3. If you are running Linux kernel 6.19 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2026-72249 actively exploited?

    No. CVE-2026-72249 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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