In the Linux kernel, the following vulnerability has been resolved:
vhost/vsock: Use kvmalloc/kvfree for larger packets.
When copying a large file over sftp over vsock, data size is usually 32kB, and kmalloc seems to fail to try to allocate 32 32kB regions.
vhost-5837: page allocation failure: order:4, mode:0x24040c0 Call Trace: [<ffffffffb6a0df64>] dump_stack+0x97/0xdb [<ffffffffb68d6aed>] warn_alloc_failed+0x10f/0x138 [<ffffffffb68d868a>] ? __alloc_pages_direct_compact+0x38/0xc8 [<ffffffffb664619f>] __alloc_pages_nodemask+0x84c/0x90d [<ffffffffb6646e56>] alloc_kmem_pages+0x17/0x19 [<ffffffffb6653a26>] kmalloc_order_trace+0x2b/0xdb [<ffffffffb66682f3>] __kmalloc+0x177/0x1f7 [<ffffffffb66e0d94>] ? copy_from_iter+0x8d/0x31d [<ffffffffc0689ab7>] vhost_vsock_handle_tx_kick+0x1fa/0x301 [vhost_vsock] [<ffffffffc06828d9>] vhost_worker+0xf7/0x157 [vhost] [<ffffffffb683ddce>] kthread+0xfd/0x105 [<ffffffffc06827e2>] ? vhost_dev_set_owner+0x22e/0x22e [vhost] [<ffffffffb683dcd1>] ? flush_kthread_worker+0xf3/0xf3 [<ffffffffb6eb332e>] ret_from_fork+0x4e/0x80 [<ffffffffb683dcd1>] ? flush_kthread_worker+0xf3/0xf3
Work around by doing kvmalloc instead.
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade bpftoolUpgrade kernel-develUpgrade kernel-tools-debuginfoUpgrade perfUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-toolsUpgrade python-perfUpgrade kernel-tools-develUpgrade kernel-livepatch-5.15.75-48.135Upgrade kernel-livepatch-5.10.155-138.670Upgrade perf-debuginfoUpgrade python-perf-debuginfoUpgrade bpftool-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernelUpgrade kernel-headersUpgrade kernel-debuginfoUpgrade kernel-livepatch-4.14.296-222.539 | May 20, 2026 | May 20, 2026 |
| Debian | — | Upgrade linux | Sep 17, 2025 | Sep 17, 2025 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Sep 15, 2025 |
| Ubuntu | — | Upgrade linux-aws-5.4Upgrade linux-lowlatencyUpgrade linuxUpgrade linux-raspi-5.4Upgrade linux-bluefieldUpgrade linux-oracle-5.15Upgrade linux-riscv-5.15Upgrade linux-oracle-5.4Upgrade linux-fipsUpgrade linux-gkeUpgrade linux-aws-hweUpgrade linux-lowlatency-hwe-5.15Upgrade linux-raspiUpgrade linux-realtimeUpgrade linux-intel-iotgUpgrade linux-ibm-5.4Upgrade linux-aws-5.15Upgrade linux-nvidiaUpgrade linux-gcp-4.15Upgrade linux-azure-fipsUpgrade linux-hweUpgrade linux-xilinx-zynqmpUpgrade linux-gcp-5.4Upgrade linux-gcp-5.15Upgrade linux-gcp-fipsUpgrade linux-gcpUpgrade linux-azure-5.4Upgrade linux-hwe-5.4Upgrade linux-kvmUpgrade linux-hwe-5.15Upgrade linux-aws-fipsUpgrade linux-ibmUpgrade linux-gkeopUpgrade linux-iotUpgrade linux-intel-iotg-5.15Upgrade linux-azure-5.15Upgrade linux-azureUpgrade linux-awsUpgrade linux-azure-4.15Upgrade linux-oracle | Sep 19, 2025 | Sep 16, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 15, 2025 | Sep 15, 2025 |
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