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Vulnerability · Published Dec 24, 2025 · Assigned by Linux

CVE-2025-68353net: vxlan: prevent NULL deref in vxlan_xmit_one

Unrated

In plain English

A security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 13% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS )–Not rated
Exploit odds (30 days)0.2%top 87.1% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:13linux6.12.115-2DEBIAN-CVE-2025-68353
Debian:14linux6.18.3-1DEBIAN-CVE-2025-68353
Ubuntu:24.04:LTSlinuxno fix listedUBUNTU-CVE-2025-68353
Ubuntu:25.10linux6.17.0-22.22UBUNTU-CVE-2025-68353
Ubuntu:25.10linux6.17.0-22.22USN-8177-1
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-awsno fix listedUBUNTU-CVE-2025-68353
Ubuntu:25.10linux-aws6.17.0-1012.12UBUNTU-CVE-2025-68353
Ubuntu:25.10linux-aws6.17.0-1012.12USN-8183-2
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-aws-6.176.17.0-1012.12~24.04.1USN-8183-2
Ubuntu:24.04:LTSlinux-aws-6.176.17.0-1012.12~24.04.1UBUNTU-CVE-2025-68353
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2025-68353
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2025-68353
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-azureno fix listedUBUNTU-CVE-2025-68353
Ubuntu:25.10linux-azure6.17.0-1013.13UBUNTU-CVE-2025-68353
Ubuntu:25.10linux-azure6.17.0-1013.13USN-8245-1
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-azure-6.176.17.0-1013.13~24.04.1USN-8245-1
Ubuntu:24.04:LTSlinux-azure-6.176.17.0-1013.13~24.04.1UBUNTU-CVE-2025-68353
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2025-68353
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2025-68353
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2025-68353
Ubuntu:25.10linux-azure-fdeno fix listedUBUNTU-CVE-2025-68353
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2025-68353
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2025-68353
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2025-68353
Ubuntu:25.10linux-gcp6.17.0-1012.12USN-8183-1
Ubuntu:25.10linux-gcp6.17.0-1012.12UBUNTU-CVE-2025-68353
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-gcp-6.176.17.0-1012.12~24.04.1USN-8183-1
Ubuntu:24.04:LTSlinux-gcp-6.176.17.0-1012.12~24.04.1UBUNTU-CVE-2025-68353
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2025-68353
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2025-68353
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2025-68353
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-hwe-6.176.17.0-22.22~24.04.1UBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-hwe-6.176.17.0-22.22~24.04.1USN-8183-2
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2025-68353
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2025-68353
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2025-68353
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2025-68353
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2025-68353
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2025-68353
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2025-68353
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2025-68353
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-nvidia-6.176.17.0-1018.18UBUNTU-CVE-2025-68353
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2025-68353
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2025-68353
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2025-68353
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2025-68353
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2025-68353
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-oem-6.176.17.0-1020.20UBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-oem-6.176.17.0-1020.20USN-8245-1
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2025-68353
Ubuntu:25.10linux-oracle6.17.0-1011.11UBUNTU-CVE-2025-68353
Ubuntu:25.10linux-oracle6.17.0-1011.11USN-8183-2
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-oracle-6.176.17.0-1011.11~24.04.1USN-8183-2
Ubuntu:24.04:LTSlinux-oracle-6.176.17.0-1011.11~24.04.1UBUNTU-CVE-2025-68353
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2025-68353
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2025-68353
Ubuntu:25.10linux-raspi6.17.0-1013.13UBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2025-68353
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-68353
Ubuntu:25.10linux-realtime6.17.0-1010.11USN-8177-1
Ubuntu:25.10linux-realtime6.17.0-1010.11UBUNTU-CVE-2025-68353
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-68353
Ubuntu:25.10linux-riscv6.17.0-22.22.1UBUNTU-CVE-2025-68353
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-riscv-6.176.17.0-22.22.1~24.04.1UBUNTU-CVE-2025-68353
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2025-68353
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2025-68353
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2025-68353
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2025-68353
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-vmwareno fix listedUBUNTU-CVE-2025-68353
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2025-68353

Affected products (as reported)

VendorProductVersions
Linux Linux 6f19b2c136d98a84d79030b53e23d405edfdc783 – before 333deb6b43c11d5bce00463b364ac993d2fa02a66f19b2c136d98a84d79030b53e23d405edfdc783 – before 4ac26aafdc8c7271414e2e7c0b2cb266a26591bc6f19b2c136d98a84d79030b53e23d405edfdc783 – before 1f73a56f986005f0bc64ed23873930e2ee4f5911
Linux Linux 6.7

References