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Vulnerability · Published Jan 23, 2026 · Assigned by Linux

CVE-2026-22994bpf: Fix reference count leak in bpf_prog_test_run_xdp()

Medium 5.5

In plain English

A medium-severity 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 0.1% (higher than 3% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.1%top 96.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix reference count leak in bpf_prog_test_run_xdp() syzbot is reporting unregister_netdevice: waiting for sit0 to become free. Usage count = 2 problem. A debug printk() patch found that a refcount is obtained at xdp_convert_md_to_buff() from bpf_prog_test_run_xdp(). According to commit ec94670fcb3b ("bpf: Support specifying ingress via xdp_md context in BPF_PROG_TEST_RUN"), the refcount obtained by xdp_convert_md_to_buff() will be released by xdp_convert_buff_to_md(). Therefore, we can consider that the error handling path introduced by commit 1c1949982524 ("bpf: introduce frags support to bpf_prog_test_run_xdp()") forgot to call xdp_convert_buff_to_md().

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.162-1DEBIAN-CVE-2026-22994
Debian:13linux6.12.69-1DEBIAN-CVE-2026-22994
Debian:14linux6.18.8-1DEBIAN-CVE-2026-22994
Ubuntu:24.04:LTSlinux6.8.0-117.117UBUNTU-CVE-2026-22994
Ubuntu:25.10linuxno fix listedUBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-aws6.8.0-1055.58UBUNTU-CVE-2026-22994
Ubuntu:25.10linux-awsno fix listedUBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1057.60~22.04.1UBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-azure6.8.0-1056.62UBUNTU-CVE-2026-22994
Ubuntu:25.10linux-azureno fix listedUBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-azure-6.176.17.0-1021.21~24.04.1UBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-azure-6.176.17.0-1021.21~24.04.1USN-8604-1
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1059.65~22.04.1UBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-azure-fde6.8.0-1058.65UBUNTU-CVE-2026-22994
Ubuntu:25.10linux-azure-fdeno fix listedUBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-azure-fde-6.176.17.0-1018.18~24.04.1USN-8605-1
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-azure-fde-6.86.8.0-1058.65~22.04.1UBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-gcp6.8.0-1058.61UBUNTU-CVE-2026-22994
Ubuntu:25.10linux-gcpno fix listedUBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-gcp-6.176.17.0-1021.24~24.04.1USN-8570-1
Ubuntu:24.04:LTSlinux-gcp-6.176.17.0-1021.24~24.04.1UBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1060.63~22.04.1UBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-gke6.8.0-1054.60UBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1041.44UBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-hwe-6.176.17.0-41.41~24.04.1UBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-124.124~22.04.1UBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-ibm6.8.0-1055.56UBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1055.56~22.04.1UBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-117.117.1UBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-117.117.1~22.04.1UBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1054.57UBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-nvidia-6.176.17.0-1031.31USN-8669-1
Ubuntu:24.04:LTSlinux-nvidia-6.176.17.0-1031.31UBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1054.57~22.04.1UBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1054.57.1UBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1024.24UBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-oem-6.176.17.0-1030.30USN-8594-1
Ubuntu:24.04:LTSlinux-oem-6.176.17.0-1030.30UBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-oracle6.8.0-1054.55UBUNTU-CVE-2026-22994
Ubuntu:25.10linux-oracleno fix listedUBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-oracle-6.176.17.0-1019.19~24.04.3UBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-oracle-6.176.17.0-1019.19~24.04.3USN-8570-2
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1054.55~22.04.1UBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-raspi6.8.0-1056.60UBUNTU-CVE-2026-22994
Ubuntu:25.10linux-raspino fix listedUBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-22994
Ubuntu:25.10linux-realtimeno fix listedUBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-22994
Ubuntu:25.10linux-riscvno fix listedUBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-riscv-6.86.8.0-117.117~22.04.1UBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-22994
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-22994
Ubuntu:24.04:LTSlinux-xilinx6.8.0-1032.33UBUNTU-CVE-2026-22994

Affected products (as reported)

VendorProductVersions
Linux Linux 1c194998252469cad00a08bd9ef0b99fd255c260 – before 368569bc546d3368ee9980ba79fc42fdff9a33651c194998252469cad00a08bd9ef0b99fd255c260 – before 98676ee71fd4eafeb8be63c7f3f1905d40e031011c194998252469cad00a08bd9ef0b99fd255c260 – before fb9ef40cccdbacce36029b305d0ef1e12e4fea381c194998252469cad00a08bd9ef0b99fd255c260 – before 737be05a765761d7d7c9f7fe92274bd8e6f6951e1c194998252469cad00a08bd9ef0b99fd255c260 – before ec69daabe45256f98ac86c651b8ad1b2574489a7
Linux Linux 5.18

References