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-headersUpgrade kernel-develUpgrade kernel-cross-headersUpgrade kernel-zfcpdump-develUpgrade kernel-rt-coreUpgrade python3-perfUpgrade kernel-rt-modules-extraUpgrade kernel-rt-debug-coreUpgrade kernel-rt-debug-develUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-debug-coreUpgrade kernel-rt-debug-kvmUpgrade kernelUpgrade kernel-debug-develUpgrade kernel-debugUpgrade kernel-tools-libs-develUpgrade kernel-rt-debugUpgrade kernel-rt-kvmUpgrade kernel-toolsUpgrade kernel-rt-develUpgrade kernel-rt-modulesUpgrade kernel-rt-debug-modulesUpgrade kernel-rtUpgrade kernel-zfcpdump-coreUpgrade kernel-debug-modules-extraUpgrade kernel-modules-extraUpgrade kernel-modulesUpgrade bpftoolUpgrade perfUpgrade kernel-abi-stablelistsUpgrade kernel-tools-libsUpgrade kernel-zfcpdump-modulesUpgrade kernel-docUpgrade kernel-coreUpgrade kernel-rt-debug-modules-extraUpgrade kernel-debug-modulesUpgrade kernel-zfcpdump | 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 | — | No solution existsUpgrade kernel-rtUpgrade kernel | Aug 12, 2024 | May 19, 2024 |
| Rocky_linux | — | Upgrade kernel-toolsUpgrade python3-perfUpgrade perfUpgrade kernel-headersUpgrade kernel-rt-debug-kvmUpgrade kernel-rt-debug-develUpgrade kernel-rtUpgrade perf-debuginfoUpgrade kernel-rt-debug-modules-extraUpgrade kernel-rt-modulesUpgrade kernel-tools-libs-develUpgrade kernel-cross-headersUpgrade kernel-debug-debuginfoUpgrade kernel-rt-debuginfo-common-x86_64Upgrade bpftoolUpgrade kernel-rt-modules-extraUpgrade kernel-debuginfo-common-x86_64Upgrade kernelUpgrade kernel-rt-debug-coreUpgrade kernel-rt-debugUpgrade kernel-debuginfoUpgrade kernel-debug-coreUpgrade kernel-rt-develUpgrade kernel-modules-extraUpgrade kernel-tools-libsUpgrade kernel-rt-debuginfoUpgrade python3-perf-debuginfoUpgrade kernel-rt-debug-modulesUpgrade kernel-rt-coreUpgrade kernel-develUpgrade kernel-rt-kvmUpgrade kernel-coreUpgrade bpftool-debuginfoUpgrade kernel-debug-modules-extraUpgrade kernel-debug-modulesUpgrade kernel-debugUpgrade kernel-modulesUpgrade kernel-debug-develUpgrade kernel-rt-debug-debuginfoUpgrade kernel-tools-debuginfo | Aug 22, 2024 | May 19, 2024 |
| Suse | — | Upgrade kernel-default-extraUpgrade kernel-devel-azureUpgrade gfs2-kmp-rtUpgrade kernel-symsUpgrade dtb-socionextUpgrade kernel-macrosUpgrade kernel-64kbUpgrade kernel-azure-vdsoUpgrade gfs2-kmp-64kbUpgrade kernel-sourceUpgrade dtb-apmUpgrade kernel-azure-livepatch-develUpgrade kernel-debug-livepatch-develUpgrade kernel-rt_debug-vdsoUpgrade kernel-default-base-rebuildUpgrade dtb-freescaleUpgrade kernel-source-azureUpgrade kernel-syms-azureUpgrade kernel-obs-qaUpgrade dtb-amlogicUpgrade kselftests-kmp-64kbUpgrade ocfs2-kmp-64kbUpgrade kernel-rt-vdsoUpgrade kernel-rt-optionalUpgrade dtb-marvellUpgrade dlm-kmp-azureUpgrade dtb-rockchipUpgrade kernel-source-rtUpgrade kernel-kvmsmall-develUpgrade kernel-obs-buildUpgrade kernel-64kb-livepatch-develUpgrade kernel-rtUpgrade reiserfs-kmp-64kbUpgrade dlm-kmp-64kbUpgrade ocfs2-kmp-rtUpgrade kernel-azure-develUpgrade kernel-docs-htmlUpgrade kernel-kvmsmallUpgrade kernel-zfcpdumpUpgrade kernel-kvmsmall-vdsoUpgrade kernel-rt-livepatch-develUpgrade dtb-broadcomUpgrade kernel-default-develUpgrade kernel-rt_debugUpgrade dtb-exynosUpgrade dtb-qcomUpgrade dtb-lgUpgrade kernel-docsUpgrade kernel-syms-rtUpgrade kselftests-kmp-defaultUpgrade cluster-md-kmp-defaultUpgrade cluster-md-kmp-azureUpgrade dtb-armUpgrade dtb-amazonUpgrade kernel-debug-vdsoUpgrade kernel-default-vdsoUpgrade cluster-md-kmp-rtUpgrade kernel-devel-rtUpgrade kernel-azureUpgrade dtb-amdUpgrade dlm-kmp-rtUpgrade ocfs2-kmp-azureUpgrade dtb-alteraUpgrade kernel-debugUpgrade dtb-xilinxUpgrade dtb-sprdUpgrade dtb-appleUpgrade reiserfs-kmp-defaultUpgrade kernel-kvmsmall-livepatch-develUpgrade kernel-64kb-develUpgrade dlm-kmp-defaultUpgrade kernel-debug-develUpgrade dtb-mediatekUpgrade kernel-default-optionalUpgrade kernel-default-livepatchUpgrade kernel-64kb-optionalUpgrade kernel-rt-livepatchUpgrade kernel-azure-optionalUpgrade reiserfs-kmp-azureUpgrade kernel-default-livepatch-develUpgrade kselftests-kmp-azureUpgrade kernel-rt_debug-develUpgrade kernel-rt-extraUpgrade dtb-nvidiaUpgrade dtb-hisiliconUpgrade kernel-rt_debug-livepatch-develUpgrade dtb-caviumUpgrade ocfs2-kmp-defaultUpgrade kselftests-kmp-rtUpgrade kernel-rt-develUpgrade kernel-develUpgrade gfs2-kmp-defaultUpgrade dtb-renesasUpgrade kernel-64kb-extraUpgrade gfs2-kmp-azureUpgrade kernel-source-vanillaUpgrade kernel-defaultUpgrade kernel-azure-extraUpgrade reiserfs-kmp-rtUpgrade kernel-default-baseUpgrade dtb-allwinnerUpgrade cluster-md-kmp-64kb | Jun 13, 2024 | May 19, 2024 |
| Ubuntu | — | Upgrade linux-image-oem-20.04bUpgrade linux-image-6.8.0-1011-awsUpgrade linux-image-gkeUpgrade linux-image-lowlatencyUpgrade linux-image-6.8.0-1010-azure-fdeUpgrade linux-image-5.15.0-1058-raspiUpgrade linux-image-5.15.0-1063-oracleUpgrade linux-image-ibmUpgrade linux-image-5.15.0-1060-nvidiaUpgrade linux-image-oem-24.04Upgrade linux-image-5.15.0-116-generic-lpaeUpgrade linux-image-5.15.0-1062-kvmUpgrade linux-image-5.15.0-116-lowlatency-64kUpgrade linux-image-gcp-lts-22.04Upgrade linux-image-6.8.0-1009-nvidiaUpgrade linux-image-azure-lts-22.04Upgrade linux-image-gkeopUpgrade linux-image-generic-64kUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-xilinx-zynqmpUpgrade linux-image-raspi-nolpaeUpgrade linux-image-oracleUpgrade linux-image-6.8.0-38-lowlatencyUpgrade linux-image-nvidiaUpgrade linux-image-6.8.0-38-lowlatency-64kUpgrade linux-image-6.8.0-1008-oemUpgrade linux-image-5.15.0-1035-xilinx-zynqmpUpgrade linux-image-raspiUpgrade linux-image-generic-lpaeUpgrade linux-image-5.15.0-1065-gcpUpgrade linux-image-5.15.0-1062-gkeUpgrade linux-image-6.8.0-1010-gcpUpgrade linux-image-5.15.0-1068-azureUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-oracle-lts-22.04Upgrade linux-image-genericUpgrade linux-image-intelUpgrade linux-image-lowlatency-64kUpgrade linux-image-gke-5.15Upgrade linux-image-oem-20.04Upgrade linux-image-6.8.0-38-generic-64kUpgrade linux-image-gkeop-5.15Upgrade linux-image-6.8.0-1009-nvidia-64kUpgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-5.15.0-1048-gkeopUpgrade linux-image-5.15.0-116-lowlatencyUpgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-5.15.0-1060-intel-iotgUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-6.8.0-1008-oracleUpgrade linux-image-kvmUpgrade linux-image-ibm-classicUpgrade linux-image-azureUpgrade linux-image-aws-lts-22.04Upgrade linux-image-5.15.0-1064-gcpUpgrade linux-image-6.8.0-1007-raspiUpgrade linux-image-6.8.0-1008-oracle-64kUpgrade linux-image-azure-fde-lts-22.04Upgrade linux-image-5.15.0-1058-ibmUpgrade linux-image-gcpUpgrade linux-image-oem-24.04aUpgrade linux-image-5.15.0-1060-nvidia-lowlatencyUpgrade linux-image-6.8.0-38-genericUpgrade linux-image-oracle-64kUpgrade linux-image-5.15.0-116-generic-64kUpgrade linux-image-nvidia-64kUpgrade linux-image-virtual-hwe-20.04Upgrade linux-image-azure-cvmUpgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-intel-iotgUpgrade linux-image-azure-fdeUpgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-generic-hwe-24.04Upgrade linux-image-generic-hwe-20.04Upgrade linux-image-virtualUpgrade linux-image-5.15.0-1068-azure-fdeUpgrade linux-image-5.15.0-116-genericUpgrade linux-image-6.8.0-1007-intelUpgrade linux-image-awsUpgrade linux-image-5.15.0-1065-awsUpgrade linux-image-6.8.0-1006-gkeUpgrade linux-image-oem-20.04cUpgrade linux-image-oem-20.04dUpgrade linux-image-6.8.0-1008-ibmUpgrade linux-image-6.8.0-1010-azureUpgrade linux-image-ibm-lts-24.04 | 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