medium 5.5

CVE-2023-52528 json

net: usb: smsc75xx: Fix uninit-value access in __smsc75xx_read_reg

published 2024-03-02 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-57153

cvss: 5.5; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 15%
public exploits: 0; none known

In the Linux kernel, the following vulnerability has been resolved:

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.

Patch / fix

fixed in 1 distros 6 links 8

Linux Linux 4.14.327, 4.19.296, 5.4.258, 5.10.198, 5.15.135, 6.1.57, 6.5.7, 6.6

debian ubuntu red hat suse almalinux rocky linux

linux Debian 12 6.1.64-1
linux Debian 14, Debian 13 6.5.8-1

debian advisories DEBIAN-CVE-2023-52528

linux Ubuntu 20.04 LTS 5.4.0-171.189
linux Ubuntu 22.04 LTS 5.15.0-94.104
linux-aws Ubuntu 20.04 LTS 5.4.0-1118.128
linux-aws Ubuntu 22.04 LTS 5.15.0-1053.58
linux-gcp Ubuntu 20.04 LTS 5.4.0-1122.131
linux-gcp Ubuntu 22.04 LTS 5.15.0-1051.59
linux-gke Ubuntu 22.04 LTS 5.15.0-1050.55
linux-ibm Ubuntu 20.04 LTS 5.4.0-1065.70

ubuntu advisories UBUNTU-CVE-2023-52528

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

kernel RHEL 9 5.14.0-503.11.1.el9_5
rv RHEL 9 5.14.0-503.11.1.el9_5
perf RHEL 9 5.14.0-503.11.1.el9_5
rtla RHEL 9 5.14.0-503.11.1.el9_5
bpftool RHEL 9 7.4.0-503.11.1.el9_5
libperf RHEL 9 5.14.0-503.11.1.el9_5
kernel-rt RHEL 9 5.14.0-503.11.1.el9_5
kernel-64k RHEL 9 5.14.0-503.11.1.el9_5

red hat advisories RHSA-2025:4342 RHSA-2024:9315 RHSA-2024:3627 RHSA-2024:3618

kernel-syms SLES for SAP 12 SP5, SLES 12 SP5 4.12.14-122.216.1
kernel-source SLES for SAP 12 SP5, SLES 12 SP5 4.12.14-122.216.1
kernel-default SLES for SAP 12 SP5, SLES 12 SP5, SLE Workstation Extension 12 SP5 +2 more 4.12.14-122.216.1
kernel-obs-build SLE Software Development Kit 12 SP5 4.12.14-122.216.1
kernel-rt SLE Real Time 12 SP5 4.12.14-10.182.1
kernel-syms-rt SLE Real Time 12 SP5 4.12.14-10.182.1
kernel-rt_debug SLE Real Time 12 SP5 4.12.14-10.182.1
kernel-source-rt SLE Real Time 12 SP5 4.12.14-10.182.1

suse advisories SUSE-SU-2024:1870-1 SUSE-SU-2024:1646-1 SUSE-SU-2024:1643-1 SUSE-SU-2024:1490-1 SUSE-SU-2024:1480-1 SUSE-SU-2024:1466-1

kernel AlmaLinux 8 4.18.0-553.5.1.el8_10
perf AlmaLinux 8 4.18.0-553.5.1.el8_10
bpftool AlmaLinux 8 4.18.0-553.5.1.el8_10
kernel-core AlmaLinux 8 4.18.0-553.5.1.el8_10
kernel-tools AlmaLinux 8 4.18.0-553.5.1.el8_10
python3-perf AlmaLinux 8 4.18.0-553.5.1.el8_10
kernel-modules AlmaLinux 8 4.18.0-553.5.1.el8_10
kernel-zfcpdump AlmaLinux 8 4.18.0-553.5.1.el8_10

almalinux advisories ALSA-2024:3618 ALSA-2024:3627

kernel-rt Rocky Linux 8 4.18.0-553.5.1.rt7.346.el8_10
kernel Rocky Linux 8 4.18.0-553.5.1.el8_10

rocky linux advisories RLSA-2024:3627 RLSA-2024:3618

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2023-52528 updated 2026-10-29 cvss 4.4

kernel: net: usb: smsc75xx: Fix uninit-value access in __smsc75xx_read_reg

Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more
affected: no fix planned “Out of support scope”
Red Hat CodeReady Linux Builder (v. 9) libperf 5.14.0-503.11.1.el9_5, kernel-debuginfo-common-s390x 5.14.0-503.11.1.el9_5, kernel-debuginfo-common-x86_64 5.14.0-503.11.1.el9_5, kernel-debuginfo-common-aarch64 5.14.0-503.11.1.el9_5, kernel-debuginfo-common-ppc64le 5.14.0-503.11.1.el9_5
fixed: vendor fix RHSA-2024:9315
Red Hat CodeReady Linux Builder EUS (v.9.4) libperf 5.14.0-427.66.1.el9_4, kernel-debuginfo-common-s390x 5.14.0-427.66.1.el9_4, kernel-debuginfo-common-x86_64 5.14.0-427.66.1.el9_4, kernel-debuginfo-common-aarch64 5.14.0-427.66.1.el9_4, kernel-debuginfo-common-ppc64le 5.14.0-427.66.1.el9_4
fixed: vendor fix RHSA-2025:4342
Red Hat Enterprise Linux AppStream (v. 9) rv 5.14.0-503.11.1.el9_5, perf 5.14.0-503.11.1.el9_5, rtla 5.14.0-503.11.1.el9_5, kernel-devel-matched 5.14.0-503.11.1.el9_5, kernel-64k-devel-matched 5.14.0-503.11.1.el9_5, kernel-debug-devel-matched 5.14.0-503.11.1.el9_5, +6 more
fixed: vendor fix RHSA-2024:9315
Red Hat Enterprise Linux AppStream EUS (v.9.4) rv 5.14.0-427.66.1.el9_4, perf 5.14.0-427.66.1.el9_4, rtla 5.14.0-427.66.1.el9_4, kernel-devel-matched 5.14.0-427.66.1.el9_4, kernel-64k-devel-matched 5.14.0-427.66.1.el9_4, kernel-debug-devel-matched 5.14.0-427.66.1.el9_4, +6 more
fixed: vendor fix RHSA-2025:4342
Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-553.5.1.el8_10, kernel 4.18.0-553.5.1.el8_10, bpftool 4.18.0-553.5.1.el8_10, kernel-core 4.18.0-553.5.1.el8_10, kernel-tools 4.18.0-553.5.1.el8_10, python3-perf 4.18.0-553.5.1.el8_10, +15 more
fixed: vendor fix RHSA-2024:3618
Red Hat Enterprise Linux BaseOS (v. 9) bpftool 7.4.0-503.11.1.el9_5, kernel 5.14.0-503.11.1.el9_5, kernel-64k 5.14.0-503.11.1.el9_5, kernel-core 5.14.0-503.11.1.el9_5, kernel-tools 5.14.0-503.11.1.el9_5, python3-perf 5.14.0-503.11.1.el9_5, +29 more
fixed: vendor fix RHSA-2024:9315
Red Hat Enterprise Linux BaseOS EUS (v.9.4) bpftool 7.3.0-427.66.1.el9_4, kernel 5.14.0-427.66.1.el9_4, kernel-64k 5.14.0-427.66.1.el9_4, kernel-core 5.14.0-427.66.1.el9_4, kernel-tools 5.14.0-427.66.1.el9_4, python3-perf 5.14.0-427.66.1.el9_4, +28 more
fixed: vendor fix RHSA-2025:4342

show 8 more

Red Hat Enterprise Linux CRB (v. 8) kernel-debuginfo-common-x86_64 4.18.0-553.5.1.el8_10, kernel-debuginfo-common-aarch64 4.18.0-553.5.1.el8_10, kernel-debuginfo-common-ppc64le 4.18.0-553.5.1.el8_10
fixed: vendor fix RHSA-2024:3618
Red Hat Enterprise Linux NFV (v. 8) kernel-rt 4.18.0-553.5.1.rt7.346.el8_10, kernel-rt-kvm 4.18.0-553.5.1.rt7.346.el8_10, kernel-rt-core 4.18.0-553.5.1.rt7.346.el8_10, kernel-rt-modules 4.18.0-553.5.1.rt7.346.el8_10, kernel-rt-debug-kvm 4.18.0-553.5.1.rt7.346.el8_10, kernel-rt-debug-core 4.18.0-553.5.1.rt7.346.el8_10, +4 more
fixed: vendor fix RHSA-2024:3627
Red Hat Enterprise Linux Real Time (v. 9) kernel-rt 5.14.0-503.11.1.el9_5, kernel-rt-core 5.14.0-503.11.1.el9_5, kernel-rt-modules 5.14.0-503.11.1.el9_5, kernel-rt-debug-core 5.14.0-503.11.1.el9_5, kernel-rt-modules-core 5.14.0-503.11.1.el9_5, kernel-rt-debug-modules 5.14.0-503.11.1.el9_5, +4 more
fixed: vendor fix RHSA-2024:9315
Red Hat Enterprise Linux Real Time EUS (v.9.4) kernel-rt 5.14.0-427.66.1.el9_4, kernel-rt-core 5.14.0-427.66.1.el9_4, kernel-rt-modules 5.14.0-427.66.1.el9_4, kernel-rt-debug-core 5.14.0-427.66.1.el9_4, kernel-rt-modules-core 5.14.0-427.66.1.el9_4, kernel-rt-debug-modules 5.14.0-427.66.1.el9_4, +4 more
fixed: vendor fix RHSA-2025:4342
Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt 5.14.0-503.11.1.el9_5, kernel-rt-kvm 5.14.0-503.11.1.el9_5, kernel-rt-core 5.14.0-503.11.1.el9_5, kernel-rt-modules 5.14.0-503.11.1.el9_5, kernel-rt-debug-kvm 5.14.0-503.11.1.el9_5, kernel-rt-debug-core 5.14.0-503.11.1.el9_5, +6 more
fixed: vendor fix RHSA-2024:9315
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4) kernel-rt 5.14.0-427.66.1.el9_4, kernel-rt-kvm 5.14.0-427.66.1.el9_4, kernel-rt-core 5.14.0-427.66.1.el9_4, kernel-rt-modules 5.14.0-427.66.1.el9_4, kernel-rt-debug-kvm 5.14.0-427.66.1.el9_4, kernel-rt-debug-core 5.14.0-427.66.1.el9_4, +6 more
fixed: vendor fix RHSA-2025:4342
Red Hat Enterprise Linux RT (v. 8) kernel-rt 4.18.0-553.5.1.rt7.346.el8_10, kernel-rt-core 4.18.0-553.5.1.rt7.346.el8_10, kernel-rt-modules 4.18.0-553.5.1.rt7.346.el8_10, kernel-rt-debug-core 4.18.0-553.5.1.rt7.346.el8_10, kernel-rt-debug-modules 4.18.0-553.5.1.rt7.346.el8_10, kernel-rt-modules-extra 4.18.0-553.5.1.rt7.346.el8_10, +2 more
fixed: vendor fix RHSA-2024:3627
Red Hat CodeReady Linux Builder (v. 9) kernel-cross-headers 5.14.0-503.11.1.el9_5 Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux AppStream (v. 9) kernel-headers 5.14.0-503.11.1.el9_5
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 2 y ago (2024-09-10)

Exploit prediction

0.24% chance of exploitation in the next 30 days, higher than 15% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	5.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

Linux Linux

Classification

Weakness

CWE-908 Use of Uninitialized Resource

Technology feeds

Linux kernel rss critical rss

References

Sources

CVE List CVE-2023-52528
NVD CVE-2023-52528

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary