In the Linux kernel, the following vulnerability has been resolved:
net: usb: smsc75xx: Fix uninit-value access in __smsc75xx_read_reg
syzbot reported the following uninit-value access issue:
===================================================== BUG: KMSAN: uninit-value in smsc75xx_wait_ready drivers/net/usb/smsc75xx.c:975 [inline] BUG: KMSAN: uninit-value in smsc75xx_bind+0x5c9/0x11e0 drivers/net/usb/smsc75xx.c:1482 CPU: 0 PID: 8696 Comm: kworker/0:3 Not tainted 5.8.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: usb_hub_wq hub_event Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x21c/0x280 lib/dump_stack.c:118 kmsan_report+0xf7/0x1e0 mm/kmsan/kmsan_report.c:121 __msan_warning+0x58/0xa0 mm/kmsan/kmsan_instr.c:215 smsc75xx_wait_ready drivers/net/usb/smsc75xx.c:975 [inline] smsc75xx_bind+0x5c9/0x11e0 drivers/net/usb/smsc75xx.c:1482 usbnet_probe+0x1152/0x3f90 drivers/net/usb/usbnet.c:1737 usb_probe_interface+0xece/0x1550 drivers/usb/core/driver.c:374 really_probe+0xf20/0x20b0 drivers/base/dd.c:529 driver_probe_device+0x293/0x390 drivers/base/dd.c:701 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:807 bus_for_each_drv+0x2ca/0x3f0 drivers/base/bus.c:431 __device_attach+0x4e2/0x7f0 drivers/base/dd.c:873 device_initial_probe+0x4a/0x60 drivers/base/dd.c:920 bus_probe_device+0x177/0x3d0 drivers/base/bus.c:491 device_add+0x3b0e/0x40d0 drivers/base/core.c:2680 usb_set_configuration+0x380f/0x3f10 drivers/usb/core/message.c:2032 usb_generic_driver_probe+0x138/0x300 drivers/usb/core/generic.c:241 usb_probe_device+0x311/0x490 drivers/usb/core/driver.c:272 really_probe+0xf20/0x20b0 drivers/base/dd.c:529 driver_probe_device+0x293/0x390 drivers/base/dd.c:701 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:807 bus_for_each_drv+0x2ca/0x3f0 drivers/base/bus.c:431 __device_attach+0x4e2/0x7f0 drivers/base/dd.c:873 device_initial_probe+0x4a/0x60 drivers/base/dd.c:920 bus_probe_device+0x177/0x3d0 drivers/base/bus.c:491 device_add+0x3b0e/0x40d0 drivers/base/core.c:2680 usb_new_device+0x1bd4/0x2a30 drivers/usb/core/hub.c:2554 hub_port_connect drivers/usb/core/hub.c:5208 [inline] hub_port_connect_change drivers/usb/core/hub.c:5348 [inline] port_event drivers/usb/core/hub.c:5494 [inline] hub_event+0x5e7b/0x8a70 drivers/usb/core/hub.c:5576 process_one_work+0x1688/0x2140 kernel/workqueue.c:2269 worker_thread+0x10bc/0x2730 kernel/workqueue.c:2415 kthread+0x551/0x590 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:293
Local variable ----buf.i87@smsc75xx_bind created at: __smsc75xx_read_reg drivers/net/usb/smsc75xx.c:83 [inline] smsc75xx_wait_ready drivers/net/usb/smsc75xx.c:968 [inline] smsc75xx_bind+0x485/0x11e0 drivers/net/usb/smsc75xx.c:1482 __smsc75xx_read_reg drivers/net/usb/smsc75xx.c:83 [inline] smsc75xx_wait_ready drivers/net/usb/smsc75xx.c:968 [inline] smsc75xx_bind+0x485/0x11e0 drivers/net/usb/smsc75xx.c:1482
This issue is caused because usbnet_read_cmd() reads less bytes than requested (zero byte in the reproducer). In this case, 'buf' is not properly filled.
This patch fixes the issue by returning -ENODATA if usbnet_read_cmd() reads less bytes than requested.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade kernel-abi-stablelistsUpgrade kernel-debug-modules-extraUpgrade kernel-rt-debug-coreUpgrade kernel-debug-coreUpgrade kernel-tools-libsUpgrade kernel-zfcpdump-coreUpgrade kernel-coreUpgrade kernel-debugUpgrade kernel-rtUpgrade kernel-rt-modulesUpgrade kernel-toolsUpgrade kernel-modulesUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-zfcpdump-modulesUpgrade kernel-modules-extraUpgrade kernel-rt-debug-modulesUpgrade kernel-rt-develUpgrade kernel-headersUpgrade bpftoolUpgrade kernel-rt-debug-develUpgrade kernel-zfcpdumpUpgrade kernel-rt-kvmUpgrade kernel-debug-modulesUpgrade kernel-rt-debug-kvmUpgrade python3-perfUpgrade perfUpgrade kernel-rt-coreUpgrade kernel-develUpgrade kernel-rt-debugUpgrade kernel-docUpgrade kernel-cross-headersUpgrade kernelUpgrade kernel-tools-libs-develUpgrade kernel-rt-debug-modules-extraUpgrade kernel-zfcpdump-develUpgrade kernel-rt-modules-extraUpgrade kernel-debug-devel | Jun 6, 2024 | Mar 2, 2024 |
| Amazon Linux Ami 2 | — | Upgrade kernelUpgrade perf-debuginfoUpgrade kernel-headersUpgrade python-perfUpgrade kernel-debuginfo-common-x86_64Upgrade python-perf-debuginfoUpgrade kernel-develUpgrade bpftool-debuginfoUpgrade bpftoolUpgrade kernel-tools-debuginfoUpgrade kernel-livepatch-5.10.198-187.748Upgrade kernel-tools-develUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-livepatch-4.14.327-246.539Upgrade perfUpgrade kernel-toolsUpgrade kernel-debuginfo | Aug 2, 2024 | Mar 2, 2024 |
| Debian | — | Upgrade linux | Jul 30, 2024 | Mar 2, 2024 |
| Huawei Euleros 2_0_sp10 | — | Upgrade kernel-toolsUpgrade kernel-abi-stablelistsUpgrade kernel-tools-libsUpgrade kernelUpgrade python3-perf | May 13, 2024 | Mar 2, 2024 |
| Huawei Euleros 2_0_sp11 | — | Upgrade kernel-tools-libsUpgrade kernelUpgrade bpftoolUpgrade python3-perfUpgrade kernel-abi-stablelistsUpgrade kernel-tools | Jun 3, 2024 | Mar 2, 2024 |
| Huawei Euleros 2_0_sp12 | — | Upgrade kernelUpgrade kernel-abi-stablelistsUpgrade python3-perfUpgrade kernel-toolsUpgrade bpftoolUpgrade kernel-tools-libs | Jul 1, 2024 | Mar 2, 2024 |
| Huawei Euleros 2_0_sp8 | — | Upgrade perfUpgrade python3-perfUpgrade kernel-headersUpgrade kernel-tools-libsUpgrade kernel-toolsUpgrade kernel-develUpgrade kernelUpgrade python-perfUpgrade bpftool | Jul 23, 2024 | Mar 2, 2024 |
| Huawei Euleros 2_0_sp9 | — | Upgrade python3-perfUpgrade kernelUpgrade kernel-tools-libsUpgrade kernel-tools | Jul 17, 2024 | Mar 2, 2024 |
| Oracle_linux | — | Upgrade kernelUpgrade kernel-uek | Jun 6, 2024 | Mar 2, 2024 |
| Redhat_linux | — | Upgrade kernelNo solution existsUpgrade kernel-rt | Jun 6, 2024 | Mar 2, 2024 |
| Rocky_linux | — | Upgrade perfUpgrade kernel-debug-coreUpgrade kernel-modulesUpgrade kernel-rt-debugUpgrade kernel-rt-debug-develUpgrade kernel-rt-debug-debuginfoUpgrade kernel-rt-debug-modulesUpgrade kernel-debug-develUpgrade kernel-debuginfoUpgrade python3-perf-debuginfoUpgrade python3-perfUpgrade kernel-rt-debuginfo-common-x86_64Upgrade kernel-cross-headersUpgrade kernel-rt-debug-modules-extraUpgrade kernel-rt-debug-kvmUpgrade kernel-coreUpgrade kernel-tools-debuginfoUpgrade kernel-develUpgrade kernel-rt-coreUpgrade kernel-modules-extraUpgrade kernelUpgrade perf-debuginfoUpgrade kernel-debugUpgrade kernel-tools-libsUpgrade kernel-headersUpgrade kernel-rt-develUpgrade bpftool-debuginfoUpgrade bpftoolUpgrade kernel-rtUpgrade kernel-rt-debuginfoUpgrade kernel-rt-modulesUpgrade kernel-tools-libs-develUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-debug-modules-extraUpgrade kernel-rt-debug-coreUpgrade kernel-rt-modules-extraUpgrade kernel-debug-modulesUpgrade kernel-rt-kvmUpgrade kernel-debug-debuginfoUpgrade kernel-tools | Jun 17, 2024 | Mar 2, 2024 |
| Suse | — | Upgrade kernel-rt-extraUpgrade dlm-kmp-azureUpgrade dtb-xilinxUpgrade dtb-apmUpgrade dtb-sprdUpgrade kernel-64kb-extraUpgrade dlm-kmp-defaultUpgrade cluster-md-kmp-defaultUpgrade kernel-obs-qaUpgrade kernel-default-base-rebuildUpgrade kernel-macrosUpgrade kernel-rtUpgrade kernel-rt_debug-vdsoUpgrade dtb-mediatekUpgrade kselftests-kmp-defaultUpgrade kernel-rt-livepatchUpgrade reiserfs-kmp-azureUpgrade kselftests-kmp-rtUpgrade kernel-debug-livepatch-develUpgrade dtb-qcomUpgrade dtb-rockchipUpgrade kernel-default-optionalUpgrade kernel-rt-develUpgrade kernel-default-extraUpgrade dlm-kmp-rtUpgrade kernel-devel-rtUpgrade ocfs2-kmp-azureUpgrade dtb-nvidiaUpgrade kernel-azure-livepatch-develUpgrade kernel-docsUpgrade kernel-azure-develUpgrade kernel-defaultUpgrade cluster-md-kmp-64kbUpgrade kernel-64kb-develUpgrade kernel-obs-buildUpgrade dtb-amlogicUpgrade cluster-md-kmp-rtUpgrade kernel-develUpgrade kernel-symsUpgrade kernel-rt_debug-livepatch-develUpgrade dtb-armUpgrade kernel-default-baseUpgrade gfs2-kmp-azureUpgrade reiserfs-kmp-rtUpgrade kernel-debugUpgrade kselftests-kmp-64kbUpgrade kernel-default-vdsoUpgrade kernel-syms-azureUpgrade dtb-allwinnerUpgrade kernel-default-livepatch-develUpgrade kernel-azure-vdsoUpgrade kernel-64kbUpgrade kselftests-kmp-azureUpgrade ocfs2-kmp-64kbUpgrade kernel-kvmsmallUpgrade ocfs2-kmp-rtUpgrade kernel-azure-baseUpgrade ocfs2-kmp-defaultUpgrade gfs2-kmp-64kbUpgrade dtb-exynosUpgrade kernel-default-manUpgrade kernel-sourceUpgrade dtb-amdUpgrade dlm-kmp-64kbUpgrade kernel-source-azureUpgrade kernel-rt_debugUpgrade kernel-default-develUpgrade dtb-renesasUpgrade dtb-hisiliconUpgrade dtb-caviumUpgrade dtb-amazonUpgrade kernel-source-vanillaUpgrade kernel-rt_debug-develUpgrade dtb-lgUpgrade kernel-rt-optionalUpgrade kernel-azureUpgrade gfs2-kmp-defaultUpgrade dtb-appleUpgrade kernel-devel-azureUpgrade kernel-kvmsmall-livepatch-develUpgrade kernel-kvmsmall-develUpgrade kernel-kvmsmall-vdsoUpgrade kernel-docs-htmlUpgrade kernel-debug-develUpgrade dtb-socionextUpgrade dtb-broadcomUpgrade gfs2-kmp-rtUpgrade kernel-azure-extraUpgrade dtb-freescaleUpgrade kernel-64kb-livepatch-develUpgrade kernel-syms-rtUpgrade kernel-64kb-optionalUpgrade reiserfs-kmp-defaultUpgrade kernel-zfcpdumpUpgrade kernel-source-rtUpgrade dtb-marvellUpgrade dtb-alteraUpgrade kernel-rt-livepatch-develUpgrade kernel-azure-optionalUpgrade kernel-default-livepatchUpgrade kernel-debug-vdsoUpgrade cluster-md-kmp-azureUpgrade reiserfs-kmp-64kbUpgrade kernel-rt-vdso | Apr 17, 2024 | Mar 2, 2024 |
| Ubuntu | — | Upgrade linux-image-azureUpgrade linux-image-lowlatency-lts-xenialUpgrade linux-image-virtual-hwe-16.04Upgrade linux-image-4.4.0-1175-awsUpgrade linux-image-aws-hweUpgrade linux-image-4.15.0-230-lowlatencyUpgrade linux-image-awsUpgrade linux-image-lowlatencyUpgrade linux-image-4.15.0-1157-kvmUpgrade linux-image-4.4.0-260-genericUpgrade linux-image-kvmUpgrade linux-image-4.15.0-1167-gcpUpgrade linux-image-4.4.0-260-lowlatencyUpgrade linux-image-4.15.0-230-genericUpgrade linux-image-4.4.0-1138-kvmUpgrade linux-image-oracleUpgrade linux-image-aws-lts-18.04Upgrade linux-image-genericUpgrade linux-image-gcpUpgrade linux-image-oemUpgrade linux-image-4.15.0-1136-oracleUpgrade linux-image-oracle-lts-18.04Upgrade linux-image-4.15.0-1174-awsUpgrade linux-image-generic-lts-xenialUpgrade linux-image-virtualUpgrade linux-image-azure-lts-18.04Upgrade linux-image-4.15.0-1182-azureUpgrade linux-image-4.4.0-1137-awsUpgrade linux-image-gcp-lts-18.04Upgrade linux-image-lowlatency-hwe-16.04Upgrade linux-image-gkeUpgrade linux-image-virtual-lts-xenialUpgrade linux-image-generic-hwe-16.04 | Oct 17, 2024 | Mar 2, 2024 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Mar 2, 2024 |
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