In the Linux kernel, the following vulnerability has been resolved:
wifi: ath11k: decrease MHI channel buffer length to 8KB
Currently buf_len field of ath11k_mhi_config_qca6390 is assigned with 0, making MHI use a default size, 64KB, to allocate channel buffers. This is likely to fail in some scenarios where system memory is highly fragmented and memory compaction or reclaim is not allowed.
There is a fail report which is caused by it: kworker/u32:45: page allocation failure: order:4, mode:0x40c00(GFP_NOIO|__GFP_COMP), nodemask=(null),cpuset=/,mems_allowed=0 CPU: 0 PID: 19318 Comm: kworker/u32:45 Not tainted 6.8.0-rc3-1.gae4495f-default #1 openSUSE Tumbleweed (unreleased) 493b6d5b382c603654d7a81fc3c144d59a1dfceb Workqueue: events_unbound async_run_entry_fn Call Trace: <TASK> dump_stack_lvl+0x47/0x60 warn_alloc+0x13a/0x1b0 ? srso_alias_return_thunk+0x5/0xfbef5 ? __alloc_pages_direct_compact+0xab/0x210 __alloc_pages_slowpath.constprop.0+0xd3e/0xda0 __alloc_pages+0x32d/0x350 ? mhi_prepare_channel+0x127/0x2d0 [mhi 40df44e07c05479f7a6e7b90fba9f0e0031a7814] __kmalloc_large_node+0x72/0x110 __kmalloc+0x37c/0x480 ? mhi_map_single_no_bb+0x77/0xf0 [mhi 40df44e07c05479f7a6e7b90fba9f0e0031a7814] ? mhi_prepare_channel+0x127/0x2d0 [mhi 40df44e07c05479f7a6e7b90fba9f0e0031a7814] mhi_prepare_channel+0x127/0x2d0 [mhi 40df44e07c05479f7a6e7b90fba9f0e0031a7814] __mhi_prepare_for_transfer+0x44/0x80 [mhi 40df44e07c05479f7a6e7b90fba9f0e0031a7814] ? __pfx_____mhi_prepare_for_transfer+0x10/0x10 [mhi 40df44e07c05479f7a6e7b90fba9f0e0031a7814] device_for_each_child+0x5c/0xa0 ? __pfx_pci_pm_resume+0x10/0x10 ath11k_core_resume+0x65/0x100 [ath11k a5094e22d7223135c40d93c8f5321cf09fd85e4e] ? srso_alias_return_thunk+0x5/0xfbef5 ath11k_pci_pm_resume+0x32/0x60 [ath11k_pci 830b7bfc3ea80ebef32e563cafe2cb55e9cc73ec] ? srso_alias_return_thunk+0x5/0xfbef5 dpm_run_callback+0x8c/0x1e0 device_resume+0x104/0x340 ? __pfx_dpm_watchdog_handler+0x10/0x10 async_resume+0x1d/0x30 async_run_entry_fn+0x32/0x120 process_one_work+0x168/0x330 worker_thread+0x2f5/0x410 ? __pfx_worker_thread+0x10/0x10 kthread+0xe8/0x120 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x34/0x50 ? __pfx_kthread+0x10/0x10 ret_from_fork_asm+0x1b/0x30 </TASK>
Actually those buffers are used only by QMI target -> host communication. And for WCN6855 and QCA6390, the largest packet size for that is less than 6KB. So change buf_len field to 8KB, which results in order 1 allocation if page size is 4KB. In this way, we can at least save some memory, and as well as decrease the possibility of allocation failure in those scenarios.
Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3.6510.30
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 |
|---|---|---|---|---|
| Alma_linux | — | Upgrade kernel-rt-modulesUpgrade kernel-rt-develUpgrade kernel-rtUpgrade kernel-rt-debug-modules-extraUpgrade kernel-toolsUpgrade kernel-debug-modulesUpgrade kernel-tools-libsUpgrade kernel-abi-stablelistsUpgrade kernel-zfcpdumpUpgrade kernel-docUpgrade kernel-rt-kvmUpgrade kernel-modulesUpgrade kernel-coreUpgrade kernel-zfcpdump-modulesUpgrade kernel-zfcpdump-coreUpgrade kernel-debug-modules-extraUpgrade bpftoolUpgrade perfUpgrade kernel-rt-debug-modulesUpgrade kernel-modules-extraUpgrade kernel-zfcpdump-develUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-develUpgrade kernel-debugUpgrade kernel-rt-debug-develUpgrade kernel-rt-coreUpgrade kernel-rt-modules-extraUpgrade kernel-rt-debug-kvmUpgrade kernel-headersUpgrade kernel-debug-develUpgrade kernel-rt-debug-coreUpgrade kernelUpgrade kernel-cross-headersUpgrade kernel-rt-debugUpgrade kernel-debug-coreUpgrade kernel-tools-libs-develUpgrade python3-perf | Aug 12, 2024 | May 19, 2024 |
| Debian | — | Upgrade linux | Jul 30, 2024 | May 19, 2024 |
| Oracle_linux | — | Upgrade kernel | Aug 16, 2024 | May 19, 2024 |
| Redhat_linux | — | Upgrade kernelUpgrade kernel-rtNo solution exists | Aug 12, 2024 | May 19, 2024 |
| Rocky_linux | — | Upgrade kernel-rt-debug-debuginfoUpgrade kernelUpgrade kernel-debuginfoUpgrade kernel-rt-debugUpgrade kernel-rt-debug-coreUpgrade kernel-tools-debuginfoUpgrade kernel-rt-debuginfoUpgrade bpftoolUpgrade kernel-tools-libsUpgrade kernel-cross-headersUpgrade kernel-rt-debuginfo-common-x86_64Upgrade kernel-debuginfo-common-x86_64Upgrade kernel-debug-modules-extraUpgrade kernel-debug-debuginfoUpgrade kernel-debug-coreUpgrade kernel-modules-extraUpgrade kernel-rt-modules-extraUpgrade kernel-develUpgrade python3-perf-debuginfoUpgrade kernel-rt-kvmUpgrade kernel-rt-coreUpgrade kernel-debug-develUpgrade kernel-coreUpgrade bpftool-debuginfoUpgrade kernel-rt-debug-modulesUpgrade kernel-debugUpgrade kernel-debug-modulesUpgrade kernel-modulesUpgrade kernel-rt-develUpgrade kernel-rt-debug-develUpgrade perfUpgrade kernel-tools-libs-develUpgrade kernel-rt-modulesUpgrade kernel-rt-debug-kvmUpgrade kernel-headersUpgrade kernel-rt-debug-modules-extraUpgrade kernel-toolsUpgrade perf-debuginfoUpgrade kernel-rtUpgrade python3-perf | Aug 22, 2024 | May 19, 2024 |
| Suse | — | Upgrade kernel-default-baseUpgrade kernel-debug-develUpgrade dtb-sprdUpgrade ocfs2-kmp-azureUpgrade kernel-debugUpgrade kernel-default-optionalUpgrade reiserfs-kmp-rtUpgrade dtb-appleUpgrade dtb-mediatekUpgrade dtb-caviumUpgrade kernel-rt-develUpgrade reiserfs-kmp-azureUpgrade kselftests-kmp-rtUpgrade gfs2-kmp-defaultUpgrade kernel-develUpgrade ocfs2-kmp-defaultUpgrade reiserfs-kmp-defaultUpgrade dtb-amdUpgrade dtb-renesasUpgrade cluster-md-kmp-rtUpgrade kernel-64kb-extraUpgrade kernel-64kb-optionalUpgrade gfs2-kmp-azureUpgrade kernel-defaultUpgrade kernel-azure-optionalUpgrade dlm-kmp-defaultUpgrade kernel-64kb-develUpgrade kernel-rt_debug-livepatch-develUpgrade kernel-rt_debug-develUpgrade kernel-default-livepatchUpgrade kernel-rt-extraUpgrade dtb-xilinxUpgrade dtb-nvidiaUpgrade kernel-default-livepatch-develUpgrade dtb-alteraUpgrade kernel-source-vanillaUpgrade dlm-kmp-rtUpgrade kernel-debug-vdsoUpgrade cluster-md-kmp-64kbUpgrade dtb-allwinnerUpgrade kernel-azureUpgrade kernel-default-vdsoUpgrade kernel-devel-rtUpgrade dtb-hisiliconUpgrade kernel-rt-livepatchUpgrade kselftests-kmp-azureUpgrade kernel-azure-extraUpgrade kernel-kvmsmall-livepatch-develUpgrade kernel-source-azureUpgrade kernel-azure-vdsoUpgrade kernel-syms-azureUpgrade dtb-exynosUpgrade kernel-sourceUpgrade kernel-macrosUpgrade ocfs2-kmp-rtUpgrade kernel-azure-develUpgrade kernel-kvmsmallUpgrade dtb-freescaleUpgrade dtb-amlogicUpgrade kselftests-kmp-defaultUpgrade kernel-obs-qaUpgrade kernel-rt_debug-vdsoUpgrade kernel-docs-htmlUpgrade kernel-rtUpgrade kernel-obs-buildUpgrade kernel-kvmsmall-develUpgrade dtb-amazonUpgrade cluster-md-kmp-azureUpgrade kernel-zfcpdumpUpgrade gfs2-kmp-64kbUpgrade kernel-default-base-rebuildUpgrade kernel-debug-livepatch-develUpgrade kernel-syms-rtUpgrade kernel-rt-optionalUpgrade kernel-kvmsmall-vdsoUpgrade kernel-devel-azureUpgrade kernel-default-extraUpgrade kernel-symsUpgrade gfs2-kmp-rtUpgrade dtb-socionextUpgrade kernel-azure-livepatch-develUpgrade kernel-rt_debugUpgrade kernel-rt-livepatch-develUpgrade kernel-default-develUpgrade dtb-qcomUpgrade dtb-broadcomUpgrade dtb-armUpgrade cluster-md-kmp-defaultUpgrade kernel-rt-vdsoUpgrade kselftests-kmp-64kbUpgrade dtb-marvellUpgrade dtb-lgUpgrade dlm-kmp-64kbUpgrade reiserfs-kmp-64kbUpgrade ocfs2-kmp-64kbUpgrade kernel-source-rtUpgrade kernel-docsUpgrade kernel-64kb-livepatch-develUpgrade dtb-rockchipUpgrade dlm-kmp-azureUpgrade kernel-64kbUpgrade dtb-apm | Jun 13, 2024 | May 19, 2024 |
| Ubuntu | — | Upgrade linux-image-lowlatency-64kUpgrade linux-image-6.8.0-1010-gcpUpgrade linux-image-5.15.0-1062-gkeUpgrade linux-image-5.15.0-1063-oracleUpgrade linux-image-5.15.0-1065-gcpUpgrade linux-image-intelUpgrade linux-image-oracle-lts-22.04Upgrade linux-image-oem-20.04Upgrade linux-image-6.8.0-1009-nvidiaUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-5.15.0-1062-kvmUpgrade linux-image-gkeop-5.15Upgrade linux-image-6.8.0-38-generic-64kUpgrade linux-image-5.15.0-1035-xilinx-zynqmpUpgrade linux-image-6.8.0-1010-azure-fdeUpgrade linux-image-nvidiaUpgrade linux-image-gkeUpgrade linux-image-6.8.0-1009-nvidia-64kUpgrade linux-image-generic-lpaeUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-xilinx-zynqmpUpgrade linux-image-generic-64kUpgrade linux-image-gcp-lts-22.04Upgrade linux-image-genericUpgrade linux-image-azure-lts-22.04Upgrade linux-image-oracleUpgrade linux-image-gke-5.15Upgrade linux-image-5.15.0-1060-nvidiaUpgrade linux-image-ibmUpgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-raspi-nolpaeUpgrade linux-image-5.15.0-116-lowlatency-64kUpgrade linux-image-lowlatencyUpgrade linux-image-5.15.0-1068-azureUpgrade linux-image-oem-24.04Upgrade linux-image-6.8.0-38-lowlatency-64kUpgrade linux-image-oem-20.04bUpgrade linux-image-raspiUpgrade linux-image-6.8.0-1011-awsUpgrade linux-image-5.15.0-1058-raspiUpgrade linux-image-gkeopUpgrade linux-image-5.15.0-116-generic-lpaeUpgrade linux-image-6.8.0-38-lowlatencyUpgrade linux-image-6.8.0-1008-oemUpgrade linux-image-oem-20.04dUpgrade linux-image-5.15.0-1065-awsUpgrade linux-image-nvidia-64kUpgrade linux-image-6.8.0-1007-intelUpgrade linux-image-awsUpgrade linux-image-6.8.0-1006-gkeUpgrade linux-image-5.15.0-1068-azure-fdeUpgrade linux-image-6.8.0-1007-raspiUpgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-6.8.0-1008-oracle-64kUpgrade linux-image-5.15.0-1064-gcpUpgrade linux-image-5.15.0-1060-nvidia-lowlatencyUpgrade linux-image-azure-fdeUpgrade linux-image-6.8.0-1008-oracleUpgrade linux-image-kvmUpgrade linux-image-aws-lts-22.04Upgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-5.15.0-1060-intel-iotgUpgrade linux-image-ibm-classicUpgrade linux-image-virtual-hwe-20.04Upgrade linux-image-azure-cvmUpgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-5.15.0-116-generic-64kUpgrade linux-image-6.8.0-1010-azureUpgrade linux-image-intel-iotgUpgrade linux-image-5.15.0-1048-gkeopUpgrade linux-image-azureUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-ibm-lts-24.04Upgrade linux-image-generic-hwe-24.04Upgrade linux-image-gcpUpgrade linux-image-oracle-64kUpgrade linux-image-5.15.0-1058-ibmUpgrade linux-image-azure-fde-lts-22.04Upgrade linux-image-5.15.0-116-lowlatencyUpgrade linux-image-oem-24.04aUpgrade linux-image-6.8.0-38-genericUpgrade linux-image-6.8.0-1008-ibmUpgrade linux-image-virtualUpgrade linux-image-generic-hwe-20.04Upgrade linux-image-oem-20.04cUpgrade linux-image-5.15.0-116-generic | Jul 12, 2024 | May 19, 2024 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 14, 2025 | May 19, 2024 |
Prioritise with Active Threat Intelligence
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