In the Linux kernel, the following vulnerability has been resolved:
mm/vmalloc: do not trigger BUG() on BH disabled context
__get_vm_area_node() currently triggers a BUG() if in_interrupt() returns true. However, in_interrupt() also reports true when BH are disabled.
The bridge code can call rhashtable_lookup_insert_fast() with bottom halves disabled:
__vlan_add() -> br_fdb_add_local() spin_lock_bh(&br->hash_lock); <-- Disable BH -> fdb_add_local() -> fdb_create() -> rhashtable_lookup_insert_fast() -> kvmalloc() -> vmalloc() -> __get_vm_area_node() -> BUG_ON(in_interrupt()) spin_unlock_bh(&br->hash_lock)
this triggers the BUG() despite the caller not being in NMI or hard IRQ context.
Replace the in_interrupt() check with in_nmi() || in_hardirq().
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Redhat_linux | — | — | Jul 23, 2026 | Jul 19, 2026 |
| Ubuntu | — | Upgrade linux-image-oracle-64kUpgrade linux-image-azure-fde-7.0Upgrade linux-image-oracle-64k-7.0Upgrade linux-image-7.0.0-1014-azureUpgrade linux-image-7.0.0-1010-azureUpgrade linux-image-nvidia-64kUpgrade linux-image-7.0.0-1008-oracleUpgrade linux-image-7.0.0-1011-oracleUpgrade linux-image-7.0.0-2016-nvidia-bos-64kUpgrade linux-image-awsUpgrade linux-image-aws-7.0Upgrade linux-image-nvidia-hwe-26.04Upgrade linux-image-aws-64kUpgrade linux-image-gcpUpgrade linux-image-7.0.0-1010-ibmUpgrade linux-image-7.0.0-1011-oracle-64kUpgrade linux-image-nvidia-64k-hwe-26.04Upgrade linux-image-nvidia-bos-7.0Upgrade linux-image-raspi-7.0Upgrade linux-image-7.0.0-1009-azure-fdeUpgrade linux-image-raspi-realtimeUpgrade linux-image-oracleUpgrade linux-image-7.0.0-1011-gcpUpgrade linux-image-gcp-7.0Upgrade linux-image-7.0.0-1015-raspi-realtimeUpgrade linux-image-nvidia-64k-7.0Upgrade linux-image-aws-64k-7.0Upgrade linux-image-7.0.0-1009-awsUpgrade linux-image-7.0.0-1016-nvidiaUpgrade linux-image-7.0.0-1011-gcp-64kUpgrade linux-image-7.0.0-1015-raspiUpgrade linux-image-oracle-7.0Upgrade linux-image-7.0.0-1016-nvidia-64kUpgrade linux-image-7.0.0-1009-aws-64kUpgrade linux-image-azure-fdeUpgrade linux-image-azure-7.0Upgrade linux-image-gcp-64k-7.0Upgrade linux-image-ibmUpgrade linux-image-nvidia-bos-64k-7.0Upgrade linux-image-nvidiaUpgrade linux-image-ibm-7.0Upgrade linux-image-gcp-64kUpgrade linux-image-7.0.0-2016-nvidia-bosUpgrade linux-image-nvidia-bos-64kUpgrade linux-image-azureUpgrade linux-image-nvidia-7.0Upgrade linux-image-nvidia-bosUpgrade linux-image-raspi-realtime-7.0Upgrade linux-image-raspiUpgrade linux-image-7.0.0-1008-oracle-64k | Jul 21, 2026 | Jul 20, 2026 |
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub