Vulnerability · Published Jun 20, 2025 · Assigned by Linux
CVE-2025-38083net_sched: prio: fix a race in prio_tune()
High 7.8
In plain English
A high-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 0.2% (higher than 5% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.2%top 95.2% 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: net_sched: prio: fix a race in prio_tune() Gerrard Tai reported a race condition in PRIO, whenever SFQ perturb timer fires at the wrong time. The race is as follows: CPU 0 CPU 1 [1]: lock root [2]: qdisc_tree_flush_backlog() [3]: unlock root | | [5]: lock root | [6]: rehash | [7]: qdisc_tree_reduce_backlog() | [4]: qdisc_put() This can be abused to underflow a parent's qlen. Calling qdisc_purge_queue() instead of qdisc_tree_flush_backlog() should fix the race, because all packets will be purged from the qdisc before releasing the lock.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | linux | 6.1.147-1 | DSA-5973-1 |
| Debian:12 | linux | 6.1.147-1 | DEBIAN-CVE-2025-38083 |
| Debian:13 | linux | 6.12.35-1 | DEBIAN-CVE-2025-38083 |
| Debian:14 | linux | 6.12.35-1 | DEBIAN-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux | 5.15.0-151.161 | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux | 5.15.0-151.161 | USN-7683-1 |
| Ubuntu:24.04:LTS | linux | 6.8.0-71.71 | USN-7682-1 |
| Ubuntu:24.04:LTS | linux | 6.8.0-71.71 | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-allwinner-5.19 | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-aws | 5.15.0-1089.96 | USN-7683-1 |
| Ubuntu:22.04:LTS | linux-aws | 5.15.0-1089.96 | UBUNTU-CVE-2025-38083 |
| Ubuntu:24.04:LTS | linux-aws | 6.8.0-1033.35 | USN-7682-1 |
| Ubuntu:24.04:LTS | linux-aws | 6.8.0-1033.35 | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-aws-5.19 | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:24.04:LTS | linux-aws-6.14 | 6.14.0-1010.10~24.04.1 | UBUNTU-CVE-2025-38083 |
| Ubuntu:24.04:LTS | linux-aws-6.14 | 6.14.0-1010.10~24.04.1 | USN-7681-1 |
| Ubuntu:22.04:LTS | linux-aws-6.2 | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-aws-6.5 | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-aws-6.8 | 6.8.0-1033.35~22.04.1 | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-aws-6.8 | 6.8.0-1033.35~22.04.1 | USN-7682-1 |
| Ubuntu:22.04:LTS | linux-azure | 5.15.0-1094.103 | UBUNTU-CVE-2025-38083 |
| Ubuntu:24.04:LTS | linux-azure | 6.8.0-1034.39 | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-azure-5.19 | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:24.04:LTS | linux-azure-6.11 | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-azure-6.2 | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-azure-6.5 | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-azure-6.8 | 6.8.0-1034.39~22.04.1 | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-azure-fde | 5.15.0-1094.103.1 | UBUNTU-CVE-2025-38083 |
| Ubuntu:25.10 | linux-azure-fde | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-azure-fde-5.19 | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-azure-fde-6.2 | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:24.04:LTS | linux-azure-nvidia | 6.8.0-1022.23 | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-gcp | 5.15.0-1088.97 | USN-7683-1 |
| Ubuntu:22.04:LTS | linux-gcp | 5.15.0-1088.97 | UBUNTU-CVE-2025-38083 |
| Ubuntu:24.04:LTS | linux-gcp | 6.8.0-1034.36 | USN-7682-1 |
| Ubuntu:24.04:LTS | linux-gcp | 6.8.0-1034.36 | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-gcp-5.19 | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:24.04:LTS | linux-gcp-6.11 | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:24.04:LTS | linux-gcp-6.14 | 6.14.0-1012.12~24.04.1 | USN-7681-1 |
| Ubuntu:24.04:LTS | linux-gcp-6.14 | 6.14.0-1012.12~24.04.1 | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-gcp-6.2 | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-gcp-6.5 | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-gcp-6.8 | 6.8.0-1034.36~22.04.2 | USN-7682-5 |
| Ubuntu:22.04:LTS | linux-gcp-6.8 | 6.8.0-1034.36~22.04.2 | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-gke | 5.15.0-1086.92 | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-gke | 5.15.0-1086.92 | USN-7683-1 |
| Ubuntu:24.04:LTS | linux-gke | 6.8.0-1029.33 | USN-7682-1 |
| Ubuntu:24.04:LTS | linux-gke | 6.8.0-1029.33 | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-gkeop | 5.15.0-1071.79 | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-gkeop | 5.15.0-1071.79 | USN-7683-1 |
| Ubuntu:24.04:LTS | linux-gkeop | 6.8.0-1016.18 | UBUNTU-CVE-2025-38083 |
| Ubuntu:24.04:LTS | linux-gkeop | 6.8.0-1016.18 | USN-7682-1 |
| Ubuntu:22.04:LTS | linux-hwe-5.19 | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:24.04:LTS | linux-hwe-6.11 | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:24.04:LTS | linux-hwe-6.14 | 6.14.0-27.27~24.04.1 | USN-7681-1 |
| Ubuntu:22.04:LTS | linux-hwe-6.2 | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-hwe-6.5 | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-hwe-6.8 | 6.8.0-65.68~22.04.1 | USN-7682-1 |
| Ubuntu:22.04:LTS | linux-hwe-6.8 | 6.8.0-65.68~22.04.1 | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-ibm | 5.15.0-1081.84 | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-ibm | 5.15.0-1081.84 | USN-7683-1 |
| Ubuntu:24.04:LTS | linux-ibm | 6.8.0-1030.30 | UBUNTU-CVE-2025-38083 |
| Ubuntu:24.04:LTS | linux-ibm | 6.8.0-1030.30 | USN-7682-1 |
| Ubuntu:22.04:LTS | linux-ibm-6.8 | 6.8.0-1030.30~22.04.1 | USN-7682-6 |
| Ubuntu:22.04:LTS | linux-ibm-6.8 | 6.8.0-1030.30~22.04.1 | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-intel-iotg | 5.15.0-1084.90 | USN-7683-1 |
| Ubuntu:22.04:LTS | linux-intel-iotg | 5.15.0-1084.90 | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-kvm | 5.15.0-1085.90 | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-kvm | 5.15.0-1085.90 | USN-7683-1 |
| Ubuntu:22.04:LTS | linux-lowlatency | 5.15.0-145.158 | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-lowlatency | 5.15.0-145.158 | USN-7683-1 |
| Ubuntu:24.04:LTS | linux-lowlatency | 6.8.0-65.68.1 | USN-7682-4 |
| Ubuntu:24.04:LTS | linux-lowlatency | 6.8.0-65.68.1 | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-5.19 | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:24.04:LTS | linux-lowlatency-hwe-6.11 | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.2 | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.5 | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.8 | 6.8.0-65.68.1~22.04.1 | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.8 | 6.8.0-65.68.1~22.04.1 | USN-7682-4 |
| Ubuntu:22.04:LTS | linux-nvidia | 5.15.0-1083.84 | USN-7683-1 |
| Ubuntu:22.04:LTS | linux-nvidia | 5.15.0-1083.84 | UBUNTU-CVE-2025-38083 |
| Ubuntu:24.04:LTS | linux-nvidia | 6.8.0-1032.35 | UBUNTU-CVE-2025-38083 |
| Ubuntu:24.04:LTS | linux-nvidia | 6.8.0-1032.35 | USN-7682-1 |
| Ubuntu:24.04:LTS | linux-nvidia-6.11 | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-nvidia-6.2 | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-nvidia-6.5 | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-nvidia-6.8 | 6.8.0-1032.35~22.04.1 | USN-7682-1 |
| Ubuntu:22.04:LTS | linux-nvidia-6.8 | 6.8.0-1032.35~22.04.1 | UBUNTU-CVE-2025-38083 |
| Ubuntu:24.04:LTS | linux-nvidia-lowlatency | 6.8.0-1032.35.1 | UBUNTU-CVE-2025-38083 |
| Ubuntu:24.04:LTS | linux-nvidia-lowlatency | 6.8.0-1032.35.1 | USN-7682-1 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra | 5.15.0-1042.42 | USN-7683-1 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra | 5.15.0-1042.42 | UBUNTU-CVE-2025-38083 |
| Ubuntu:24.04:LTS | linux-nvidia-tegra | 6.8.0-1009.9 | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra-igx | 5.15.0-1031.31 | USN-7683-1 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra-igx | 5.15.0-1031.31 | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-oem-5.17 | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-oem-6.0 | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-oem-6.1 | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:24.04:LTS | linux-oem-6.11 | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:24.04:LTS | linux-oem-6.14 | 6.14.0-1008.8 | USN-7681-1 |
| Ubuntu:24.04:LTS | linux-oem-6.14 | 6.14.0-1008.8 | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-oem-6.5 | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:24.04:LTS | linux-oem-6.8 | 6.8.0-1032.32 | USN-7682-1 |
| Ubuntu:24.04:LTS | linux-oem-6.8 | 6.8.0-1032.32 | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-oracle | 5.15.0-1086.92 | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-oracle | 5.15.0-1086.92 | USN-7683-1 |
| Ubuntu:24.04:LTS | linux-oracle | 6.8.0-1030.31 | UBUNTU-CVE-2025-38083 |
| Ubuntu:24.04:LTS | linux-oracle | 6.8.0-1030.31 | USN-7682-1 |
| Ubuntu:24.04:LTS | linux-oracle-6.14 | 6.14.0-1010.10~24.04.1 | USN-7681-3 |
| Ubuntu:24.04:LTS | linux-oracle-6.14 | 6.14.0-1010.10~24.04.1 | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-oracle-6.5 | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-oracle-6.8 | 6.8.0-1030.31~22.04.1 | USN-7682-2 |
| Ubuntu:22.04:LTS | linux-oracle-6.8 | 6.8.0-1030.31~22.04.1 | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-raspi | 5.15.0-1083.86 | UBUNTU-CVE-2025-38083 |
| Ubuntu:24.04:LTS | linux-raspi | 6.8.0-1032.36 | USN-7682-5 |
| Ubuntu:24.04:LTS | linux-raspi | 6.8.0-1032.36 | UBUNTU-CVE-2025-38083 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:24.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:24.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-riscv-5.19 | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:24.04:LTS | linux-riscv-6.14 | 6.14.0-27.27.1~24.04.1 | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-riscv-6.5 | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-riscv-6.8 | 6.8.0-71.71~22.04.1 | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-starfive-5.19 | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-starfive-6.2 | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-starfive-6.5 | no fix listed | UBUNTU-CVE-2025-38083 |
| Ubuntu:24.04:LTS | linux-xilinx | 6.8.0-1017.18 | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-xilinx-zynqmp | 5.15.0-1053.57 | UBUNTU-CVE-2025-38083 |
| Ubuntu:22.04:LTS | linux-xilinx-zynqmp | 5.15.0-1053.57 | USN-7683-1 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | 7b8e0b6e659983154c8d7e756cdb833d89a3d4d7 – before 53d11560e957d53ee87a0653d258038ce12361b77b8e0b6e659983154c8d7e756cdb833d89a3d4d7 – before 4483d8b9127591c60c4eb789d6cab953bc4522a97b8e0b6e659983154c8d7e756cdb833d89a3d4d7 – before 20f68e6a9e41693cb0e55e5b9ebbcb40983a4b8f7b8e0b6e659983154c8d7e756cdb833d89a3d4d7 – before 3aaa7c01cf19d9b9bb64b88b65c3a6fd05da2eb47b8e0b6e659983154c8d7e756cdb833d89a3d4d7 – before 46c15c9d0f65c9ba857d63f53264f4b17e8a715f7b8e0b6e659983154c8d7e756cdb833d89a3d4d7 – before e3f6745006dc9423d2b065b90f191cfa11b1b5847b8e0b6e659983154c8d7e756cdb833d89a3d4d7 – before 93f9eeb678d4c9c1abf720b3615fa8299a4908457b8e0b6e659983154c8d7e756cdb833d89a3d4d7 – before d35acc1be3480505b5931f17e4ea9b7617fea4d3 |
| Linux | Linux | 5.0 |
References
- https://git.kernel.org/stable/c/53d11560e957d53ee87a0653d258038ce12361b7
- https://git.kernel.org/stable/c/4483d8b9127591c60c4eb789d6cab953bc4522a9
- https://git.kernel.org/stable/c/20f68e6a9e41693cb0e55e5b9ebbcb40983a4b8f
- https://git.kernel.org/stable/c/3aaa7c01cf19d9b9bb64b88b65c3a6fd05da2eb4
- https://git.kernel.org/stable/c/46c15c9d0f65c9ba857d63f53264f4b17e8a715f
- https://git.kernel.org/stable/c/e3f6745006dc9423d2b065b90f191cfa11b1b584
- https://git.kernel.org/stable/c/93f9eeb678d4c9c1abf720b3615fa8299a490845
- https://git.kernel.org/stable/c/d35acc1be3480505b5931f17e4ea9b7617fea4d3
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html