CVE-2023-52528

CVE Details

Release Date:

2024-03-02

Description

In the Linux kernel, the following vulnerability has been resolved:\nnet: usb: smsc75xx: Fix uninit-value access in __smsc75xx_read_reg\nsyzbot reported the following uninit-value access issue:\n=====================================================\nBUG: KMSAN: uninit-value in smsc75xx_wait_ready drivers/net/usb/smsc75xx.c:975 [inline]\nBUG: KMSAN: uninit-value in smsc75xx_bind+0x5c9/0x11e0 drivers/net/usb/smsc75xx.c:1482\nCPU: 0 PID: 8696 Comm: kworker/0:3 Not tainted 5.8.0-rc5-syzkaller #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\nWorkqueue: usb_hub_wq hub_event\nCall Trace:\n__dump_stack lib/dump_stack.c:77 [inline]\ndump_stack+0x21c/0x280 lib/dump_stack.c:118\nkmsan_report+0xf7/0x1e0 mm/kmsan/kmsan_report.c:121\n__msan_warning+0x58/0xa0 mm/kmsan/kmsan_instr.c:215\nsmsc75xx_wait_ready drivers/net/usb/smsc75xx.c:975 [inline]\nsmsc75xx_bind+0x5c9/0x11e0 drivers/net/usb/smsc75xx.c:1482\nusbnet_probe+0x1152/0x3f90 drivers/net/usb/usbnet.c:1737\nusb_probe_interface+0xece/0x1550 drivers/usb/core/driver.c:374\nreally_probe+0xf20/0x20b0 drivers/base/dd.c:529\ndriver_probe_device+0x293/0x390 drivers/base/dd.c:701\n__device_attach_driver+0x63f/0x830 drivers/base/dd.c:807\nbus_for_each_drv+0x2ca/0x3f0 drivers/base/bus.c:431\n__device_attach+0x4e2/0x7f0 drivers/base/dd.c:873\ndevice_initial_probe+0x4a/0x60 drivers/base/dd.c:920\nbus_probe_device+0x177/0x3d0 drivers/base/bus.c:491\ndevice_add+0x3b0e/0x40d0 drivers/base/core.c:2680\nusb_set_configuration+0x380f/0x3f10 drivers/usb/core/message.c:2032\nusb_generic_driver_probe+0x138/0x300 drivers/usb/core/generic.c:241\nusb_probe_device+0x311/0x490 drivers/usb/core/driver.c:272\nreally_probe+0xf20/0x20b0 drivers/base/dd.c:529\ndriver_probe_device+0x293/0x390 drivers/base/dd.c:701\n__device_attach_driver+0x63f/0x830 drivers/base/dd.c:807\nbus_for_each_drv+0x2ca/0x3f0 drivers/base/bus.c:431\n__device_attach+0x4e2/0x7f0 drivers/base/dd.c:873\ndevice_initial_probe+0x4a/0x60 drivers/base/dd.c:920\nbus_probe_device+0x177/0x3d0 drivers/base/bus.c:491\ndevice_add+0x3b0e/0x40d0 drivers/base/core.c:2680\nusb_new_device+0x1bd4/0x2a30 drivers/usb/core/hub.c:2554\nhub_port_connect drivers/usb/core/hub.c:5208 [inline]\nhub_port_connect_change drivers/usb/core/hub.c:5348 [inline]\nport_event drivers/usb/core/hub.c:5494 [inline]\nhub_event+0x5e7b/0x8a70 drivers/usb/core/hub.c:5576\nprocess_one_work+0x1688/0x2140 kernel/workqueue.c:2269\nworker_thread+0x10bc/0x2730 kernel/workqueue.c:2415\nkthread+0x551/0x590 kernel/kthread.c:292\nret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:293\nLocal variable ----buf.i87@smsc75xx_bind created at:\n__smsc75xx_read_reg drivers/net/usb/smsc75xx.c:83 [inline]\nsmsc75xx_wait_ready drivers/net/usb/smsc75xx.c:968 [inline]\nsmsc75xx_bind+0x485/0x11e0 drivers/net/usb/smsc75xx.c:1482\n__smsc75xx_read_reg drivers/net/usb/smsc75xx.c:83 [inline]\nsmsc75xx_wait_ready drivers/net/usb/smsc75xx.c:968 [inline]\nsmsc75xx_bind+0x485/0x11e0 drivers/net/usb/smsc75xx.c:1482\nThis issue is caused because usbnet_read_cmd() reads less bytes than requested\n(zero byte in the reproducer). In this case, 'buf' is not properly filled.\nThis patch fixes the issue by returning -ENODATA if usbnet_read_cmd() reads\nless bytes than requested.

See more information about CVE-2023-52528 from MITRE CVE dictionary and NIST NVD

CVSS Scoring

NOTE: The following CVSS v3.1 metrics and score provided are preliminary and subject to review.

Base Score:	4.4	CVSS Vector:	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Attack Vector:	Local network	Attack Complexity:	Low
Privileges Required:	High	User Interaction:	None
Scope:	Unchanged	Confidentiality Impact:	None
Integrity Impact:	None	Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 6 (kernel-uek)	ELSA-2024-12570	2024-08-05
Oracle Linux version 7 (kernel-uek)	ELSA-2024-12571	2024-08-05
Oracle Linux version 8 (kernel)	ELSA-2024-3618	2024-06-05
Oracle VM version 3 (kernel-uek)	OVMSA-2024-0010	2024-08-07