In the Linux kernel, the following vulnerability has been resolved:
idpf: Fix RSS LUT NULL pointer crash on early ethtool operations
The RSS LUT is not initialized until the interface comes up, causing the following NULL pointer crash when ethtool operations like rxhash on/off are performed before the interface is brought up for the first time.
Move RSS LUT initialization from ndo_open to vport creation to ensure LUT is always available. This enables RSS configuration via ethtool before bringing the interface up. Simplify LUT management by maintaining all changes in the driver's soft copy and programming zeros to the indirection table when rxhash is disabled. Defer HW programming until the interface comes up if it is down during rxhash and LUT configuration changes.
Steps to reproduce: ** Load idpf driver; interfaces will be created modprobe idpf ** Before bringing the interfaces up, turn rxhash off ethtool -K eth2 rxhash off
[89408.371875] BUG: kernel NULL pointer dereference, address: 0000000000000000 [89408.371908] #PF: supervisor read access in kernel mode [89408.371924] #PF: error_code(0x0000) - not-present page [89408.371940] PGD 0 P4D 0 [89408.371953] Oops: Oops: 0000 [#1] SMP NOPTI <snip> [89408.372052] RIP: 0010:memcpy_orig+0x16/0x130 [89408.372310] Call Trace: [89408.372317] <TASK> [89408.372326] ? idpf_set_features+0xfc/0x180 [idpf] [89408.372363] __netdev_update_features+0x295/0xde0 [89408.372384] ethnl_set_features+0x15e/0x460 [89408.372406] genl_family_rcv_msg_doit+0x11f/0x180 [89408.372429] genl_rcv_msg+0x1ad/0x2b0 [89408.372446] ? __pfx_ethnl_set_features+0x10/0x10 [89408.372465] ? __pfx_genl_rcv_msg+0x10/0x10 [89408.372482] netlink_rcv_skb+0x58/0x100 [89408.372502] genl_rcv+0x2c/0x50 [89408.372516] netlink_unicast+0x289/0x3e0 [89408.372533] netlink_sendmsg+0x215/0x440 [89408.372551] __sys_sendto+0x234/0x240 [89408.372571] __x64_sys_sendto+0x28/0x30 [89408.372585] x64_sys_call+0x1909/0x1da0 [89408.372604] do_syscall_64+0x7a/0xfa0 [89408.373140] ? clear_bhb_loop+0x60/0xb0 [89408.373647] entry_SYSCALL_64_after_hwframe+0x76/0x7e [89408.378887] </TASK> <snip>
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 |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jul 23, 2026 | Jul 23, 2026 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Jan 23, 2026 |
| Suse | — | Upgrade kernel-default-extraUpgrade gfs2-kmp-rtUpgrade kernel-rt-vdsoUpgrade kernel-kvmsmallUpgrade cluster-md-kmp-azureUpgrade dlm-kmp-defaultUpgrade kernel-default-livepatchUpgrade kernel-docs-htmlUpgrade kernel-rtUpgrade kselftests-kmp-defaultUpgrade dtb-socionextUpgrade kernel-azure-develUpgrade dtb-apmUpgrade kernel-kvmsmall-develUpgrade dtb-freescaleUpgrade kernel-devel-azureUpgrade dlm-kmp-azureUpgrade kselftests-kmp-rtUpgrade dtb-appleUpgrade kernel-default-develUpgrade kernel-kvmsmall-vdsoUpgrade kernel-rt-extraUpgrade ocfs2-kmp-64kbUpgrade cluster-md-kmp-defaultUpgrade dtb-amazonUpgrade dtb-broadcomUpgrade kernel-azure-extraUpgrade kernel-obs-qaUpgrade dtb-marvellUpgrade kernel-64kbUpgrade kernel-obs-buildUpgrade ocfs2-kmp-rtUpgrade kernel-azure-vdsoUpgrade kernel-docsUpgrade kernel-macrosUpgrade kselftests-kmp-azureUpgrade kernel-syms-azureUpgrade dtb-amlogicUpgrade kernel-zfcpdumpUpgrade kernel-rt-optionalUpgrade kernel-defaultUpgrade dtb-amdUpgrade ocfs2-kmp-azureUpgrade dtb-xilinxUpgrade kernel-64kb-develUpgrade dtb-lgUpgrade gfs2-kmp-azureUpgrade cluster-md-kmp-64kbUpgrade kselftests-kmp-64kbUpgrade dlm-kmp-rtUpgrade kernel-develUpgrade dtb-sprdUpgrade dtb-qcomUpgrade ocfs2-kmp-defaultUpgrade kernel-64kb-extraUpgrade kernel-rt-develUpgrade dtb-alteraUpgrade dtb-allwinnerUpgrade kernel-source-vanillaUpgrade kernel-64kb-optionalUpgrade dtb-rockchipUpgrade dtb-armUpgrade kernel-azureUpgrade dtb-mediatekUpgrade dtb-renesasUpgrade dtb-nvidiaUpgrade dlm-kmp-64kbUpgrade gfs2-kmp-64kbUpgrade dtb-hisiliconUpgrade dtb-caviumUpgrade kernel-default-vdsoUpgrade kernel-azure-optionalUpgrade dtb-exynosUpgrade kernel-default-baseUpgrade cluster-md-kmp-rtUpgrade gfs2-kmp-defaultUpgrade kernel-default-optionalUpgrade kernel-symsUpgrade kernel-source-azureUpgrade reiserfs-kmp-defaultUpgrade kernel-source | Feb 12, 2026 | Feb 12, 2026 |
| Ubuntu | — | Upgrade linux-image-6.17.0-1021-gcpUpgrade linux-image-oem-22.04bUpgrade linux-image-realtime-6.8.1Upgrade linux-image-gcp-lts-24.04Upgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-realtime-6.17Upgrade linux-image-gcp-6.17Upgrade linux-image-6.17.0-1019-oracleUpgrade linux-image-realtime-hwe-22.04Upgrade linux-image-virtualUpgrade linux-image-oem-22.04dUpgrade linux-image-oem-24.04dUpgrade linux-image-oracle-6.8Upgrade linux-image-aws-lts-24.04Upgrade linux-image-azure-fde-lts-24.04Upgrade linux-image-6.8.0-1059-nvidia-lowlatency-64kUpgrade linux-image-aws-64k-6.8Upgrade linux-image-laptop-23.10Upgrade linux-image-nvidia-64k-6.17Upgrade linux-image-generic-64k-6.8Upgrade linux-image-oracle-64kUpgrade linux-image-6.8.0-1063-azure-fipsUpgrade linux-image-gcp-fipsUpgrade linux-image-6.8.0-136-genericUpgrade linux-image-6.8.0-2050-raspi-realtimeUpgrade linux-image-oem-24.04aUpgrade linux-image-azure-fipsUpgrade linux-image-ibm-classicUpgrade linux-image-kvmUpgrade linux-image-nvidia-tegra-rt-6.8Upgrade linux-image-6.17.0-1018-azure-fdeUpgrade linux-image-6.17.0-1031-nvidia-64kUpgrade linux-image-6.8.0-1061-awsUpgrade linux-image-raspi-6.8Upgrade linux-image-azure-fips-6.8Upgrade linux-image-oem-24.04cUpgrade linux-image-azure-lts-24.04Upgrade linux-image-realtimeUpgrade linux-image-azure-fde-6.17Upgrade linux-image-gcp-6.8Upgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-awsUpgrade linux-image-6.8.0-1059-gkeUpgrade linux-image-6.8.0-1061-ibmUpgrade linux-image-6.8.1-1056-realtimeUpgrade linux-image-gke-6.8Upgrade linux-image-virtual-hwe-22.04Upgrade linux-image-xilinxUpgrade linux-image-raspi-realtimeUpgrade linux-image-xilinx-6.8Upgrade linux-image-oem-6.17Upgrade linux-image-oracle-6.17Upgrade linux-image-6.8.0-1046-gkeopUpgrade linux-image-gke-64k-6.8Upgrade linux-image-gke-64kUpgrade linux-image-ibm-6.8Upgrade linux-image-generic-hwe-22.04Upgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-nvidia-64kUpgrade linux-image-oracleUpgrade linux-image-gcpUpgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-6.8.0-136-generic-64kUpgrade linux-image-azure-fdeUpgrade linux-image-6.8.0-1063-azureUpgrade linux-image-generic-6.8Upgrade linux-image-ibm-lts-24.04Upgrade linux-image-oem-20.04dUpgrade linux-image-6.17.0-1021-gcp-64kUpgrade linux-image-fips-6.8Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-aws-fips-6.8Upgrade linux-image-oem-20.04cUpgrade linux-image-6.8.0-1030-nvidia-tegraUpgrade linux-image-6.8.0-1059-nvidiaUpgrade linux-image-gcp-64kUpgrade linux-image-6.8.0-1061-aws-fipsUpgrade linux-image-aws-fipsUpgrade linux-image-6.8.0-1062-azure-fdeUpgrade linux-image-6.8.0-1061-raspiUpgrade linux-image-oracle-64k-6.17Upgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-oem-24.04bUpgrade linux-image-nvidiaUpgrade linux-image-gkeop-6.8Upgrade linux-image-fipsUpgrade linux-image-6.17.0-1021-azureUpgrade linux-image-raspi-realtime-6.8Upgrade linux-image-genericUpgrade linux-image-gcp-64k-6.17Upgrade linux-image-azure-fde-6.8Upgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-lowlatency-6.8Upgrade linux-image-gkeUpgrade linux-image-aws-64kUpgrade linux-image-6.8.0-136-fipsUpgrade linux-image-6.8.0-1064-gcp-fipsUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-oem-22.04cUpgrade linux-image-oem-20.04bUpgrade linux-image-6.8.0-1058-oracle-64kUpgrade linux-image-aws-6.8Upgrade linux-image-nvidia-hwe-24.04Upgrade linux-image-nvidia-64k-hwe-24.04Upgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-lowlatencyUpgrade linux-image-intel-iotgUpgrade linux-image-gkeopUpgrade linux-image-azureUpgrade linux-image-6.17.0-1031-nvidiaUpgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-oem-22.04Upgrade linux-image-6.8.0-1064-gcpUpgrade linux-image-oem-20.04Upgrade linux-image-6.8.0-136-lowlatencyUpgrade linux-image-generic-64kUpgrade linux-image-intel-iot-realtimeUpgrade linux-image-raspiUpgrade linux-image-generic-lpaeUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-oem-24.04Upgrade linux-image-nvidia-tegra-6.8Upgrade linux-image-azure-6.8Upgrade linux-image-6.8.0-136-lowlatency-64kUpgrade linux-image-6.8.0-1064-gcp-64kUpgrade linux-image-6.8.0-1061-aws-64kUpgrade linux-image-azure-6.17Upgrade linux-image-6.17.0-1018-realtimeUpgrade linux-image-6.8.0-1030-nvidia-tegra-rtUpgrade linux-image-virtual-6.8Upgrade linux-image-nvidia-6.8Upgrade linux-image-ibmUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-6.8.0-1033-xilinxUpgrade linux-image-6.17.0-1019-oracle-64kUpgrade linux-image-oracle-64k-6.8Upgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-6.8.0-1059-nvidia-lowlatencyUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-6.17.0-1030-oemUpgrade linux-image-oem-22.04aUpgrade linux-image-nvidia-64k-6.8Upgrade linux-image-6.8.0-1058-oracleUpgrade linux-image-lowlatency-64kUpgrade linux-image-nvidia-tegra-rtUpgrade linux-image-6.8.0-1059-nvidia-64kUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-6.8.0-1059-gke-64kUpgrade linux-image-gcp-fips-6.8Upgrade linux-image-realtime-hwe-24.04Upgrade linux-image-nvidia-6.17Upgrade linux-image-nvidia-tegraUpgrade linux-image-gcp-64k-6.8 | Jul 21, 2026 | Jul 20, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jul 17, 2026 | Jan 23, 2026 |
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