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 parents 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.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Linux-allwinner-5.19 | Ubuntu | jammy | * |
| Linux-allwinner-5.19 | Ubuntu | upstream | * |
| Linux-aws-5.0 | Ubuntu | esm-infra/bionic | * |
| Linux-aws-5.0 | Ubuntu | upstream | * |
| Linux-aws-5.11 | Ubuntu | esm-infra/focal | * |
| Linux-aws-5.11 | Ubuntu | upstream | * |
| Linux-aws-5.13 | Ubuntu | esm-infra/focal | * |
| Linux-aws-5.13 | Ubuntu | upstream | * |
| Linux-aws-5.19 | Ubuntu | jammy | * |
| Linux-aws-5.19 | Ubuntu | upstream | * |
| Linux-aws-5.3 | Ubuntu | esm-infra/bionic | * |
| Linux-aws-5.3 | Ubuntu | upstream | * |
| Linux-aws-5.8 | Ubuntu | esm-infra/focal | * |
| Linux-aws-5.8 | Ubuntu | upstream | * |
| Linux-aws-6.2 | Ubuntu | jammy | * |
| Linux-aws-6.2 | Ubuntu | upstream | * |
| Linux-aws-6.5 | Ubuntu | jammy | * |
| Linux-aws-6.5 | Ubuntu | upstream | * |
| Linux-azure | Ubuntu | esm-infra/bionic | * |
| Linux-azure-5.11 | Ubuntu | esm-infra/focal | * |
| Linux-azure-5.11 | Ubuntu | upstream | * |
| Linux-azure-5.13 | Ubuntu | esm-infra/focal | * |
| Linux-azure-5.13 | Ubuntu | upstream | * |
| Linux-azure-5.19 | Ubuntu | jammy | * |
| Linux-azure-5.19 | Ubuntu | upstream | * |
| Linux-azure-5.3 | Ubuntu | esm-infra/bionic | * |
| Linux-azure-5.3 | Ubuntu | upstream | * |
| Linux-azure-5.8 | Ubuntu | esm-infra/focal | * |
| Linux-azure-5.8 | Ubuntu | upstream | * |
| Linux-azure-6.2 | Ubuntu | jammy | * |
| Linux-azure-6.2 | Ubuntu | upstream | * |
| Linux-azure-6.5 | Ubuntu | jammy | * |
| Linux-azure-6.5 | Ubuntu | upstream | * |
| Linux-azure-edge | Ubuntu | esm-infra/bionic | * |
| Linux-azure-edge | Ubuntu | upstream | * |
| Linux-azure-fde | Ubuntu | esm-infra/focal | * |
| Linux-azure-fde-5.19 | Ubuntu | jammy | * |
| Linux-azure-fde-5.19 | Ubuntu | upstream | * |
| Linux-azure-fde-6.2 | Ubuntu | jammy | * |
| Linux-azure-fde-6.2 | Ubuntu | upstream | * |
| Linux-gcp | Ubuntu | esm-infra/bionic | * |
| Linux-gcp-5.11 | Ubuntu | esm-infra/focal | * |
| Linux-gcp-5.11 | Ubuntu | upstream | * |
| Linux-gcp-5.13 | Ubuntu | esm-infra/focal | * |
| Linux-gcp-5.13 | Ubuntu | upstream | * |
| Linux-gcp-5.19 | Ubuntu | jammy | * |
| Linux-gcp-5.19 | Ubuntu | upstream | * |
| Linux-gcp-5.3 | Ubuntu | esm-infra/bionic | * |
| Linux-gcp-5.3 | Ubuntu | upstream | * |
| Linux-gcp-5.8 | Ubuntu | esm-infra/focal | * |
| Linux-gcp-5.8 | Ubuntu | upstream | * |
| Linux-gcp-6.2 | Ubuntu | jammy | * |
| Linux-gcp-6.2 | Ubuntu | upstream | * |
| Linux-gcp-6.5 | Ubuntu | jammy | * |
| Linux-gcp-6.5 | Ubuntu | upstream | * |
| Linux-gke | Ubuntu | esm-infra/focal | * |
| Linux-gke-4.15 | Ubuntu | esm-infra/bionic | * |
| Linux-gke-4.15 | Ubuntu | upstream | * |
| Linux-gke-5.15 | Ubuntu | esm-infra/focal | * |
| Linux-gke-5.15 | Ubuntu | upstream | * |
| Linux-gke-5.4 | Ubuntu | esm-infra/bionic | * |
| Linux-gke-5.4 | Ubuntu | upstream | * |
| Linux-gkeop | Ubuntu | esm-infra/focal | * |
| Linux-gkeop-5.15 | Ubuntu | esm-infra/focal | * |
| Linux-gkeop-5.4 | Ubuntu | esm-infra/bionic | * |
| Linux-gkeop-5.4 | Ubuntu | upstream | * |
| Linux-hwe | Ubuntu | esm-infra/bionic | * |
| Linux-hwe-5.11 | Ubuntu | esm-infra/focal | * |
| Linux-hwe-5.11 | Ubuntu | upstream | * |
| Linux-hwe-5.13 | Ubuntu | esm-infra/focal | * |
| Linux-hwe-5.13 | Ubuntu | upstream | * |
| Linux-hwe-5.19 | Ubuntu | jammy | * |
| Linux-hwe-5.19 | Ubuntu | upstream | * |
| Linux-hwe-5.8 | Ubuntu | esm-infra/focal | * |
| Linux-hwe-5.8 | Ubuntu | upstream | * |
| Linux-hwe-6.2 | Ubuntu | jammy | * |
| Linux-hwe-6.2 | Ubuntu | upstream | * |
| Linux-hwe-6.5 | Ubuntu | jammy | * |
| Linux-hwe-6.5 | Ubuntu | upstream | * |
| Linux-hwe-edge | Ubuntu | esm-infra/bionic | * |
| Linux-hwe-edge | Ubuntu | esm-infra/xenial | * |
| Linux-hwe-edge | Ubuntu | upstream | * |
| Linux-intel-5.13 | Ubuntu | esm-infra/focal | * |
| Linux-intel-5.13 | Ubuntu | upstream | * |
| Linux-intel-iot-realtime | Ubuntu | jammy | * |
| Linux-lowlatency-hwe-5.19 | Ubuntu | jammy | * |
| Linux-lowlatency-hwe-5.19 | Ubuntu | upstream | * |
| Linux-lowlatency-hwe-6.2 | Ubuntu | jammy | * |
| Linux-lowlatency-hwe-6.2 | Ubuntu | upstream | * |
| Linux-lowlatency-hwe-6.5 | Ubuntu | jammy | * |
| Linux-lowlatency-hwe-6.5 | Ubuntu | upstream | * |
| Linux-nvidia-6.2 | Ubuntu | jammy | * |
| Linux-nvidia-6.2 | Ubuntu | upstream | * |
| Linux-nvidia-6.5 | Ubuntu | jammy | * |
| Linux-nvidia-6.5 | Ubuntu | upstream | * |
| Linux-oem | Ubuntu | esm-infra/bionic | * |
| Linux-oem | Ubuntu | upstream | * |
| Linux-oem-5.10 | Ubuntu | esm-infra/focal | * |
| Linux-oem-5.10 | Ubuntu | upstream | * |
| Linux-oem-5.13 | Ubuntu | esm-infra/focal | * |
| Linux-oem-5.13 | Ubuntu | upstream | * |
| Linux-oem-5.14 | Ubuntu | esm-infra/focal | * |
| Linux-oem-5.14 | Ubuntu | upstream | * |
| Linux-oem-5.17 | Ubuntu | jammy | * |
| Linux-oem-5.17 | Ubuntu | upstream | * |
| Linux-oem-5.6 | Ubuntu | esm-infra/focal | * |
| Linux-oem-5.6 | Ubuntu | upstream | * |
| Linux-oem-6.0 | Ubuntu | jammy | * |
| Linux-oem-6.0 | Ubuntu | upstream | * |
| Linux-oem-6.1 | Ubuntu | jammy | * |
| Linux-oem-6.1 | Ubuntu | upstream | * |
| Linux-oem-6.5 | Ubuntu | jammy | * |
| Linux-oem-6.5 | Ubuntu | upstream | * |
| Linux-oracle-5.0 | Ubuntu | esm-infra/bionic | * |
| Linux-oracle-5.0 | Ubuntu | upstream | * |
| Linux-oracle-5.11 | Ubuntu | esm-infra/focal | * |
| Linux-oracle-5.11 | Ubuntu | upstream | * |
| Linux-oracle-5.13 | Ubuntu | esm-infra/focal | * |
| Linux-oracle-5.13 | Ubuntu | upstream | * |
| Linux-oracle-5.3 | Ubuntu | esm-infra/bionic | * |
| Linux-oracle-5.3 | Ubuntu | upstream | * |
| Linux-oracle-5.8 | Ubuntu | esm-infra/focal | * |
| Linux-oracle-5.8 | Ubuntu | upstream | * |
| Linux-oracle-6.5 | Ubuntu | jammy | * |
| Linux-oracle-6.5 | Ubuntu | upstream | * |
| Linux-raspi-realtime | Ubuntu | noble | * |
| Linux-raspi2 | Ubuntu | esm-infra/focal | * |
| Linux-raspi2 | Ubuntu | upstream | * |
| Linux-realtime | Ubuntu | jammy | * |
| Linux-realtime | Ubuntu | noble | * |
| Linux-riscv | Ubuntu | esm-infra/focal | * |
| Linux-riscv | Ubuntu | jammy | * |
| Linux-riscv-5.11 | Ubuntu | esm-infra/focal | * |
| Linux-riscv-5.11 | Ubuntu | upstream | * |
| Linux-riscv-5.19 | Ubuntu | jammy | * |
| Linux-riscv-5.19 | Ubuntu | upstream | * |
| Linux-riscv-5.8 | Ubuntu | esm-infra/focal | * |
| Linux-riscv-5.8 | Ubuntu | upstream | * |
| Linux-riscv-6.5 | Ubuntu | jammy | * |
| Linux-riscv-6.5 | Ubuntu | upstream | * |
| Linux-starfive-5.19 | Ubuntu | jammy | * |
| Linux-starfive-5.19 | Ubuntu | upstream | * |
| Linux-starfive-6.2 | Ubuntu | jammy | * |
| Linux-starfive-6.2 | Ubuntu | upstream | * |
| Linux-starfive-6.5 | Ubuntu | jammy | * |
| Linux-starfive-6.5 | Ubuntu | upstream | * |