Vulnerability · Published Feb 27, 2025 · Assigned by Linux
CVE-2025-21761openvswitch: use RCU protection in ovs_vport_cmd_fill_info()
High 7.8
In plain English
A high-severity use-after-free 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 0.3% (higher than 18% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.3%top 82.1% 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: openvswitch: use RCU protection in ovs_vport_cmd_fill_info() ovs_vport_cmd_fill_info() can be called without RTNL or RCU. Use RCU protection and dev_net_rcu() to avoid potential UAF.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | linux | 6.1.129-1 | DEBIAN-CVE-2025-21761 |
| Debian:13 | linux | 6.12.16-1 | DEBIAN-CVE-2025-21761 |
| Debian:14 | linux | 6.12.16-1 | DEBIAN-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux | 5.15.0-140.150 | UBUNTU-CVE-2025-21761 |
| Ubuntu:24.04:LTS | linux | 6.8.0-78.78 | USN-7703-1 |
| Ubuntu:24.04:LTS | linux | 6.8.0-78.78 | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-allwinner-5.19 | no fix listed | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-aws | 5.15.0-1084.91 | UBUNTU-CVE-2025-21761 |
| Ubuntu:24.04:LTS | linux-aws | 6.8.0-1035.37 | USN-7703-1 |
| Ubuntu:24.04:LTS | linux-aws | 6.8.0-1035.37 | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-aws-5.19 | no fix listed | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-aws-6.2 | no fix listed | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-aws-6.5 | no fix listed | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-aws-6.8 | 6.8.0-1035.37~22.04.1 | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-aws-6.8 | 6.8.0-1035.37~22.04.1 | USN-7703-2 |
| Ubuntu:22.04:LTS | linux-azure | 5.15.0-1089.98 | UBUNTU-CVE-2025-21761 |
| Ubuntu:24.04:LTS | linux-azure | 6.8.0-1034.39 | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-azure-5.19 | no fix listed | UBUNTU-CVE-2025-21761 |
| Ubuntu:24.04:LTS | linux-azure-6.11 | 6.11.0-1015.15~24.04.1 | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-azure-6.2 | no fix listed | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-azure-6.5 | no fix listed | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-azure-6.8 | 6.8.0-1034.39~22.04.1 | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-azure-fde | 5.15.0-1089.98.1 | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-azure-fde-5.19 | no fix listed | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-azure-fde-6.2 | no fix listed | UBUNTU-CVE-2025-21761 |
| Ubuntu:24.04:LTS | linux-azure-nvidia | 6.8.0-1022.23 | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-gcp | 5.15.0-1083.92 | UBUNTU-CVE-2025-21761 |
| Ubuntu:24.04:LTS | linux-gcp | 6.8.0-1036.38 | USN-7703-2 |
| Ubuntu:24.04:LTS | linux-gcp | 6.8.0-1036.38 | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-gcp-5.19 | no fix listed | UBUNTU-CVE-2025-21761 |
| Ubuntu:24.04:LTS | linux-gcp-6.11 | 6.11.0-1015.15~24.04.1 | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-gcp-6.2 | no fix listed | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-gcp-6.5 | no fix listed | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-gcp-6.8 | 6.8.0-1036.38~22.04.1 | USN-7703-2 |
| Ubuntu:22.04:LTS | linux-gcp-6.8 | 6.8.0-1036.38~22.04.1 | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-gke | 5.15.0-1081.87 | UBUNTU-CVE-2025-21761 |
| Ubuntu:24.04:LTS | linux-gke | 6.8.0-1032.36 | UBUNTU-CVE-2025-21761 |
| Ubuntu:24.04:LTS | linux-gke | 6.8.0-1032.36 | USN-7703-4 |
| Ubuntu:22.04:LTS | linux-gkeop | 5.15.0-1066.74 | UBUNTU-CVE-2025-21761 |
| Ubuntu:24.04:LTS | linux-gkeop | 6.8.0-1019.21 | USN-7703-2 |
| Ubuntu:24.04:LTS | linux-gkeop | 6.8.0-1019.21 | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-hwe-5.19 | no fix listed | UBUNTU-CVE-2025-21761 |
| Ubuntu:24.04:LTS | linux-hwe-6.11 | 6.11.0-26.26~24.04.1 | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-hwe-6.2 | no fix listed | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-hwe-6.5 | no fix listed | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-hwe-6.8 | 6.8.0-78.78~22.04.1 | USN-7703-4 |
| Ubuntu:22.04:LTS | linux-hwe-6.8 | 6.8.0-78.78~22.04.1 | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-ibm | 5.15.0-1076.79 | UBUNTU-CVE-2025-21761 |
| Ubuntu:24.04:LTS | linux-ibm | 6.8.0-1033.33 | USN-7703-2 |
| Ubuntu:24.04:LTS | linux-ibm | 6.8.0-1033.33 | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-ibm-6.8 | 6.8.0-1033.33~22.04.1 | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-ibm-6.8 | 6.8.0-1033.33~22.04.1 | USN-7703-2 |
| Ubuntu:24.04:LTS | linux-intel | no fix listed | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | no fix listed | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-intel-iotg | 5.15.0-1079.85 | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-kvm | 5.15.0-1080.85 | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-lowlatency | 5.15.0-140.150 | UBUNTU-CVE-2025-21761 |
| Ubuntu:24.04:LTS | linux-lowlatency | 6.8.0-78.78.1 | USN-7703-1 |
| Ubuntu:24.04:LTS | linux-lowlatency | 6.8.0-78.78.1 | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-5.19 | no fix listed | UBUNTU-CVE-2025-21761 |
| Ubuntu:24.04:LTS | linux-lowlatency-hwe-6.11 | 6.11.0-1014.15~24.04.1 | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.2 | no fix listed | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.5 | no fix listed | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.8 | 6.8.0-78.78.1~22.04.1 | USN-7703-1 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.8 | 6.8.0-78.78.1~22.04.1 | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-nvidia | 5.15.0-1078.79 | UBUNTU-CVE-2025-21761 |
| Ubuntu:24.04:LTS | linux-nvidia | 6.8.0-1035.38 | USN-7703-4 |
| Ubuntu:24.04:LTS | linux-nvidia | 6.8.0-1035.38 | UBUNTU-CVE-2025-21761 |
| Ubuntu:24.04:LTS | linux-nvidia-6.11 | 6.11.0-1010.10 | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-nvidia-6.2 | no fix listed | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-nvidia-6.5 | no fix listed | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-nvidia-6.8 | 6.8.0-1035.38~22.04.1 | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-nvidia-6.8 | 6.8.0-1035.38~22.04.1 | USN-7703-4 |
| Ubuntu:24.04:LTS | linux-nvidia-lowlatency | 6.8.0-1035.38.1 | USN-7703-4 |
| Ubuntu:24.04:LTS | linux-nvidia-lowlatency | 6.8.0-1035.38.1 | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra | 5.15.0-1037.37 | UBUNTU-CVE-2025-21761 |
| Ubuntu:24.04:LTS | linux-nvidia-tegra | 6.8.0-1009.9 | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra-igx | 5.15.0-1026.26 | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-oem-5.17 | no fix listed | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-oem-6.0 | no fix listed | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-oem-6.1 | no fix listed | UBUNTU-CVE-2025-21761 |
| Ubuntu:24.04:LTS | linux-oem-6.11 | 6.11.0-1022.22 | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-oem-6.5 | no fix listed | UBUNTU-CVE-2025-21761 |
| Ubuntu:24.04:LTS | linux-oem-6.8 | no fix listed | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-oracle | 5.15.0-1081.87 | UBUNTU-CVE-2025-21761 |
| Ubuntu:24.04:LTS | linux-oracle | 6.8.0-1032.33 | UBUNTU-CVE-2025-21761 |
| Ubuntu:24.04:LTS | linux-oracle | 6.8.0-1032.33 | USN-7703-3 |
| Ubuntu:22.04:LTS | linux-oracle-6.5 | no fix listed | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-oracle-6.8 | 6.8.0-1032.33~22.04.1 | USN-7703-3 |
| Ubuntu:22.04:LTS | linux-oracle-6.8 | 6.8.0-1032.33~22.04.1 | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-raspi | 5.15.0-1078.81 | UBUNTU-CVE-2025-21761 |
| Ubuntu:24.04:LTS | linux-raspi | 6.8.0-1035.39 | UBUNTU-CVE-2025-21761 |
| Ubuntu:24.04:LTS | linux-raspi | 6.8.0-1035.39 | USN-7703-4 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2025-21761 |
| Ubuntu:24.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2025-21761 |
| Ubuntu:24.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-riscv-5.19 | no fix listed | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-riscv-6.5 | no fix listed | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-riscv-6.8 | 6.8.0-78.78~22.04.1 | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-starfive-5.19 | no fix listed | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-starfive-6.2 | no fix listed | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-starfive-6.5 | no fix listed | UBUNTU-CVE-2025-21761 |
| Ubuntu:24.04:LTS | linux-xilinx | 6.8.0-1017.18 | UBUNTU-CVE-2025-21761 |
| Ubuntu:22.04:LTS | linux-xilinx-zynqmp | 5.15.0-1050.54 | UBUNTU-CVE-2025-21761 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | 9354d452034273a50a4fd703bea31e5d6b1fc20b – before e85a25d1a9985645e796039e843d1de581d2de1e9354d452034273a50a4fd703bea31e5d6b1fc20b – before a8816b3f1f151373fd30f1996f00480126c8bb119354d452034273a50a4fd703bea31e5d6b1fc20b – before a884f57600e463f69d7b279c4598b865260b62a19354d452034273a50a4fd703bea31e5d6b1fc20b – before 7e01abc34e87abd091e619161a20f54ed4e3e2da9354d452034273a50a4fd703bea31e5d6b1fc20b – before 8ec57509c36c8b9a23e50b7858dda0c520a2d0749354d452034273a50a4fd703bea31e5d6b1fc20b – before a849a10de5e04d798f7f286a2f1ca174719a617a9354d452034273a50a4fd703bea31e5d6b1fc20b – before 5828937742af74666192835d657095d95c53dbd09354d452034273a50a4fd703bea31e5d6b1fc20b – before 90b2f49a502fa71090d9f4fe29a2f51fe5dff76d |
| Linux | Linux | 4.15 |
Weakness: CWE-416 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
- https://git.kernel.org/stable/c/e85a25d1a9985645e796039e843d1de581d2de1e
- https://git.kernel.org/stable/c/a8816b3f1f151373fd30f1996f00480126c8bb11
- https://git.kernel.org/stable/c/a884f57600e463f69d7b279c4598b865260b62a1
- https://git.kernel.org/stable/c/7e01abc34e87abd091e619161a20f54ed4e3e2da
- https://git.kernel.org/stable/c/8ec57509c36c8b9a23e50b7858dda0c520a2d074
- https://git.kernel.org/stable/c/a849a10de5e04d798f7f286a2f1ca174719a617a
- https://git.kernel.org/stable/c/5828937742af74666192835d657095d95c53dbd0
- https://git.kernel.org/stable/c/90b2f49a502fa71090d9f4fe29a2f51fe5dff76d
- https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
- https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html