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.

The following products are affected by CVE-2025-68353 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-68353.

URL	Resource
https://git.kernel.org/stable/c/1f73a56f986005f0bc64ed23873930e2ee4f5911
https://git.kernel.org/stable/c/4ac26aafdc8c7271414e2e7c0b2cb266a26591bc
https://lore.kernel.org/linux-cve-announce/2025122455-CVE-2025-68353-8704@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2025-68353
https://www.cve.org/CVERecord?id=CVE-2025-68353