What is CVE-2025-68353?

CVE-2025-68353 is a unscored severity Linux kernel vulnerability, affecting Linux kernel versions from 6.7 onward and patched in 6.18.2 and 6.19. CVE-2025-68353 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-68353?

CVE-2025-68353 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2025-68353?

Yes, CVE-2025-68353 has been patched. Fixed versions include 6.18.2 and 6.19. If you are running Linux kernel 6.7 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2025-68353 actively exploited?

CVE-2025-68353 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2025-68353

In the Linux kernel, the following vulnerability has been resolved: net: vxlan: prevent NULL deref in vxlan_xmit_one Neither sock4 nor sock6 pointers are guaranteed to be non-NULL in vxlan_xmit_one, e.g. if the iface is brought down. This can lead to the following NULL dereference: BUG: kernel NULL pointer dereference, address: 0000000000000010 Oops: Oops: 0000 [#1] SMP NOPTI RIP: 0010:vxlan_xmit_one+0xbb3/0x1580 Call Trace: vxlan_xmit+0x429/0x610 dev_hard_start_xmit+0x55/0xa0 __dev_queue_xmit+0x6d0/0x7f0 ip_finish_output2+0x24b/0x590 ip_output+0x63/0x110 Mentioned commits changed the code path in vxlan_xmit_one and as a side effect the sock4/6 pointer validity checks in vxlan(6)_get_route were lost. Fix this by adding back checks. Since both commits being fixed were released in the same version (v6.7) and are strongly related, bundle the fixes in a single commit.

Package Linux Kernel

Published 2025-12-24

Last modified 2026-04-15

Patch available

Yes

Affected versions

Linux kernel versions 6.7 and later are affected. Fixed in 6.18.2, 6.19 and their respective stable series.

Affected from

≥ 6.7

Fixed in

✓ 6.18.2 6.18.x ✓ 6.19

References

The following references provide additional information about CVE-2025-68353 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/1f73a56f986005f0bc64ed23873930e2ee4f5911
Patch
Kernel patch commit
https://git.kernel.org/stable/c/4ac26aafdc8c7271414e2e7c0b2cb266a26591bc
Patch

Frequently asked questions

What is CVE-2025-68353?

CVE-2025-68353 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.7 onward and has been patched in 6.18.2 and 6.19. CVE-2025-68353 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
Is there a patch available for CVE-2025-68353?

Yes — CVE-2025-68353 has been patched. Fixed versions include 6.18.2 and 6.19. If you are running Linux kernel 6.7 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2025-68353 actively exploited?

No — CVE-2025-68353 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.