< Back

CVE-2025-21776

Updated on 27 Feb 2025

Severity

5.5 Medium severity

Details

CVSS score: 5.5
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE ID: CWE-476 NULL Pointer Dereference
Affected product
Affected component
Links: NIST CIRCL RHEL Ubuntu

Overview

About vulnerability

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

USB: hub: Ignore non-compliant devices with too many configs or interfaces

Robert Morris created a test program which can cause usb_hub_to_struct_hub() to dereference a NULL or inappropriate pointer:

Oops: general protection fault, probably for non-canonical address 0xcccccccccccccccc: 0000 [#1] SMP DEBUG_PAGEALLOC PTI CPU: 7 UID: 0 PID: 117 Comm: kworker/7:1 Not tainted 6.13.0-rc3-00017-gf44d154d6e3d #14 Hardware name: FreeBSD BHYVE/BHYVE, BIOS 14.0 10/17/2021 Workqueue: usb_hub_wq hub_event RIP: 0010:usb_hub_adjust_deviceremovable+0x78/0x110 … Call Trace: ? die_addr+0x31/0x80 ? exc_general_protection+0x1b4/0x3c0 ? asm_exc_general_protection+0x26/0x30 ? usb_hub_adjust_deviceremovable+0x78/0x110 hub_probe+0x7c7/0xab0 usb_probe_interface+0x14b/0x350 really_probe+0xd0/0x2d0 ? __pfx___device_attach_driver+0x10/0x10 __driver_probe_device+0x6e/0x110 driver_probe_device+0x1a/0x90 __device_attach_driver+0x7e/0xc0 bus_for_each_drv+0x7f/0xd0 __device_attach+0xaa/0x1a0 bus_probe_device+0x8b/0xa0 device_add+0x62e/0x810 usb_set_configuration+0x65d/0x990 usb_generic_driver_probe+0x4b/0x70 usb_probe_device+0x36/0xd0

The cause of this error is that the device has two interfaces, and the hub driver binds to interface 1 instead of interface 0, which is where usb_hub_to_struct_hub() looks.

We can prevent the problem from occurring by refusing to accept hub devices that violate the USB spec by having more than one configuration or interface.

Details

Affected product:: AlmaLinux 9.2 ESU , CentOS 6 ELS , CentOS 7 ELS , CentOS 8.4 ELS , CentOS 8.5 ELS , CentOS Stream 8 ELS , CloudLinux 6 ELS , CloudLinux 7 ELS , Oracle Linux 6 ELS , Oracle Linux 7 ELS , RHEL 7 ELS , TuxCare 9.6 ESU , Ubuntu 16.04 ELS , Ubuntu 18.04 ELS , Ubuntu 20.04 ELS
Affected packages:: linux-hwe @ 4.15.0 (+17 more)

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

USB: hub: Ignore non-compliant devices with too many configs or interfaces

Robert Morris created a test program which can cause usb_hub_to_struct_hub() to dereference a NULL or inappropriate pointer:

The cause of this error is that the device has two interfaces, and the hub driver binds to interface 1 instead of interface 0, which is where usb_hub_to_struct_hub() looks.

We can prevent the problem from occurring by refusing to accept hub devices that violate the USB spec by having more than one configuration or interface.

Fixes

Operating system / Project

KernelCare state

Live-patch status from KernelCare for each operating system.

Operating system	Status	Covered kernels
AlmaLinux 9.2 ESU	Released	23 kernels 5.14.0-284.1101.el9_2.tuxcare.7.els20 5.14.0-284.1101.el9_2.tuxcare.7.els21 5.14.0-284.1101.el9_2.tuxcare.7.els23 5.14.0-284.1101.el9_2.tuxcare.7.els22 5.14.0-284.1101.el9_2.tuxcare.7.els14 5.14.0-284.1101.el9_2.tuxcare.7.els18 5.14.0-284.1101.el9_2.tuxcare.7.els16 5.14.0-284.1101.el9_2.tuxcare.7.els15 5.14.0-284.1101.el9_2.tuxcare.7.els17 5.14.0-284.1101.el9_2.tuxcare.7.els19 5.14.0-284.1101.el9_2.tuxcare.7.els24 5.14.0-284.1101.el9_2.tuxcare.7.els25 5.14.0-284.1101.el9_2.tuxcare.7.els26 5.14.0-284.1101.el9_2.tuxcare.7.els27 5.14.0-284.1101.el9_2.tuxcare.7.els28 5.14.0-284.1101.el9_2.tuxcare.7.els29 5.14.0-284.1101.el9_2.tuxcare.7.els30 5.14.0-284.1101.el9_2.tuxcare.7.els31 5.14.0-284.1101.el9_2.tuxcare.7.els32 5.14.0-284.1101.el9_2.tuxcare.7.els35 5.14.0-284.1101.el9_2.tuxcare.7.els34 5.14.0-284.1101.el9_2.tuxcare.11.els1 5.14.0-284.1101.el9_2.tuxcare.11.els2
AlmaLinux 9.6 ESU	Planned	—
Amazon Linux 2023	Planned	—
Debian 11	Released	34 kernels 5.10.46-5 5.10.70-1 5.10.46-4 5.10.84-1 5.10.92-1 5.10.92-2 5.10.103-1 5.10.106-1 5.10.113-1 5.10.120-1 5.10.127-1 5.10.127-2 5.10.136-1 5.10.140-1 5.10.149-1 5.10.149-2 5.10.158-2 5.10.162-1 5.10.179-1 5.10.179-2 5.10.179-3 5.10.179-5 5.10.191-1 5.10.197-1 5.10.178-3 5.10.205-2 5.10.205-1 5.10.209-2 5.10.216-1 5.10.218-1 5.10.221-1 5.10.223-1 5.10.226-1 5.10.234-1
Debian 11 cloud	Released	14 kernels 5.10.113-1 5.10.179-2 5.10.179-3 5.10.179-5 5.10.191-1 5.10.197-1 5.10.205-2 5.10.209-2 5.10.216-1 5.10.218-1 5.10.221-1 5.10.223-1 5.10.226-1 5.10.234-1
Debian 12	Planned	—
Proxmox VE 7 5.15	Released	47 kernels 5.15.5-1-pve-5.15.5-1 5.15.12-1-pve-5.15.12-2 5.15.12-1-pve-5.15.12-3 5.15.17-1-pve-5.15.17-1 5.15.19-1-pve-5.15.19-1 5.15.19-2-pve-5.15.19-2 5.15.19-2-pve-5.15.19-3 5.15.27-1-pve-5.15.27-1 5.15.30-1-pve-5.15.30-1 5.15.30-2-pve-5.15.30-3 5.15.35-1-pve-5.15.35-1 5.15.35-1-pve-5.15.35-2 5.15.35-1-pve-5.15.35-3 5.15.35-2-pve-5.15.35-4 5.15.35-2-pve-5.15.35-5 5.15.35-3-pve-5.15.35-6 5.15.39-1-pve-5.15.39-1 5.15.39-2-pve-5.15.39-2 5.15.39-3-pve-5.15.39-3 5.15.39-4-pve-5.15.39-4 5.15.7-1-pve-5.15.7-1 5.15.53-1-pve-5.15.53-1 5.15.60-1-pve-5.15.60-1 5.15.60-2-pve-5.15.60-2 5.15.64-1-pve-5.15.64-1 5.15.74-1-pve-5.15.74-1 5.15.83-1-pve-5.15.83-1 5.15.102-1-pve-5.15.102-1 5.15.104-1-pve-5.15.104-1 5.15.104-1-pve-5.15.104-2 5.15.107-1-pve-5.15.107-1 5.15.107-2-pve-5.15.107-2 5.15.85-1-pve-5.15.85-1 5.15.108-1-pve-5.15.108-1 5.15.108-1-pve-5.15.108-2 5.15.116-1-pve-5.15.116-1 5.15.126-1-pve-5.15.126-1 5.15.131-1-pve-5.15.131-1 5.15.131-1-pve-5.15.131-2 5.15.131-2-pve-5.15.131-3 5.15.136-1-pve-5.15.136-1 5.15.111-1-pve-5.15.111-1 5.15.143-1-pve-5.15.143-1 5.15.149-1-pve-5.15.149-1 5.15.152-1-pve-5.15.152-1 5.15.158-1-pve_5.15.158-1 5.15.158-2-pve_5.15.158-2
Ubuntu 18.04 AWS Focal	Will Not Fix	—
Ubuntu 20.04	In Progress	—
Ubuntu 20.04 GCP	In Progress	—
Ubuntu 20.04 HWE AWS	Released	56 kernels 5.15.0-1026.30~20.04.2 5.15.0-1022.26~20.04.1 5.15.0-1023.27~20.04.1 5.15.0-1021.25~20.04.1 5.15.0-1020.24~20.04.1 5.15.0-1017.21~20.04.1 5.15.0-1019.23~20.04.1 5.15.0-1014.18~20.04.1 5.15.0-1015.19~20.04.1 5.15.0-1018.22~20.04.1 5.15.0-1027.31~20.04.1 5.15.0-1028.32~20.04.1 5.15.0-1030.34~20.04.1 5.15.0-1031.35~20.04.1 5.15.0-1033.37~20.04.1 5.15.0-1034.38~20.04.1 5.15.0-1035.39~20.04.1 5.15.0-1036.40~20.04.1 5.15.0-1037.41~20.04.1 5.15.0-1038.43~20.04.1 5.15.0-1039.44~20.04.1 5.15.0-1040.45~20.04.1 5.15.0-1041.46~20.04.1 5.15.0-1043.48~20.04.1 5.15.0-1044.49~20.04.1 5.15.0-1045.50~20.04.1 5.15.0-1047.52~20.04.1 5.15.0-1048.53~20.04.1 5.15.0-1049.54~20.04.1 5.15.0-1050.55~20.04.1 5.15.0-1051.56~20.04.1 5.15.0-1052.57~20.04.1 5.15.0-1053.58~20.04.1 5.15.0-1055.60~20.04.1 5.15.0-1056.61~20.04.1 5.15.0-1057.63~20.04.1 5.15.0-1058.64~20.04.1 5.15.0-1061.67~20.04.1 5.15.0-1062.68~20.04.1 5.15.0-1063.69~20.04.1 5.15.0-1064.70~20.04.1 5.15.0-1065.71~20.04.1 5.15.0-1066.72~20.04.1 5.15.0-1067.73~20.04.1 5.15.0-1068.74~20.04.1 5.15.0-1069.75~20.04.1 5.15.0-1070.76~20.04.1 5.15.0-1071.77~20.04.1 5.15.0-1072.78~20.04.1 5.15.0-1073.79~20.04.1 5.15.0-1075.82~20.04.1 5.15.0-1077.84~20.04.1 5.15.0-1080.87~20.04.1 5.15.0-1081.88~20.04.1 5.15.0-1082.89~20.04.1 5.15.0-1083.90~20.04.1
Ubuntu 20.04 HWE Azure	Released	39 kernels 5.15.0-1029.36~20.04.1 5.15.0-1022.27~20.04.1 5.15.0-1023.29~20.04.1 5.15.0-1021.26~20.04.1 5.15.0-1020.25~20.04.1 5.15.0-1017.20~20.04.1 5.15.0-1019.24~20.04.1 5.15.0-1008.9~20.04.1 5.15.0-1013.16~20.04.1 5.15.0-1014.17~20.04.1 5.15.0-1024.30~20.04.1 5.15.0-1034.41~20.04.1 5.15.0-1049.56~20.04.1 5.15.0-1050.57~20.04.1 5.15.0-1054.62~20.04.1 5.15.0-1056.64~20.04.1 5.15.0-1057.65~20.04.1 5.15.0-1058.66~20.04.2 5.15.0-1059.67~20.04.1 5.15.0-1060.69~20.04.1 5.15.0-1061.70~20.04.1 5.15.0-1063.72~20.04.1 5.15.0-1064.73~20.04.1 5.15.0-1067.76~20.04.1 5.15.0-1068.77~20.04.1 5.15.0-1065.74~20.04.1 5.15.0-1070.79~20.04.1 5.15.0-1071.80~20.04.1 5.15.0-1072.81~20.04.1 5.15.0-1073.82~20.04.1 5.15.0-1074.83~20.04.1 5.15.0-1075.84~20.04.1 5.15.0-1078.87~20.04.1 5.15.0-1079.88~20.04.1 5.15.0-1081.90~20.04.1 5.15.0-1082.91~20.04.1 5.15.0-1086.95~20.04.1 5.15.0-1087.96~20.04.1 5.15.0-1088.97~20.04.1
Ubuntu 22.04	Released	73 kernels 5.15.0-27.28 5.15.0-33.34 5.15.0-37.39 5.15.0-39.42 5.15.0-25.25 5.15.0-28.29 5.15.0-29.30 5.15.0-30.31 5.15.0-41.44 5.15.0-43.46 5.15.0-46.49 5.15.0-35.36 5.15.0-47.51 5.15.0-48.54 5.15.0-40.43 5.15.0-50.56 5.15.0-52.58 5.15.0-53.59 5.15.0-56.62 5.15.0-54.60 5.15.0-57.63 5.15.0-58.64 5.15.0-60.66 5.15.0-67.74 5.15.0-69.76 5.15.0-70.77 5.15.0-71.78 5.15.0-72.79 5.15.0-68.75 5.15.0-73.80 5.15.0-75.82 5.15.0-76.83 5.15.0-78.85 5.15.0-79.86 5.15.0-82.91 5.15.0-83.92 5.15.0-84.93 5.15.0-86.96 5.15.0-74.81 5.15.0-87.97 5.15.0-88.98 5.15.0-89.99 5.15.0-91.101 5.15.0-92.102 5.15.0-94.104 5.15.0-97.107 5.15.0-100.110 5.15.0-101.111 5.15.0-102.112 5.15.0-105.115 5.15.0-106.116 5.15.0-107.117 5.15.0-112.122 5.15.0-113.123 5.15.0-116.126 5.15.0-117.127 5.15.0-118.128 5.15.0-119.129 5.15.0-121.131 5.15.0-122.132 5.15.0-124.134 5.15.0-125.135 5.15.0-127.137 5.15.0-130.140 5.15.0-126.136 5.15.0-131.141 5.15.0-128.138 5.15.0-133.144 5.15.0-134.145 5.15.0-135.146 5.15.0-136.147 5.15.0-138.148 5.15.0-139.149
Ubuntu 22.04 AWS	Released	64 kernels 5.15.0-1005.7 5.15.0-1008.10 5.15.0-1011.14 5.15.0-1013.17 5.15.0-1015.19 5.15.0-1017.21 5.15.0-1009.11 5.15.0-1020.24 5.15.0-1021.25 5.15.0-1022.26 5.15.0-1023.27 5.15.0-1026.30 5.15.0-1004.6 5.15.0-1014.18 5.15.0-1018.22 5.15.0-1024.29 5.15.0-1027.31 5.15.0-1028.32 5.15.0-1030.34 5.15.0-1031.35 5.15.0-1033.37 5.15.0-1034.38 5.15.0-1035.39 5.15.0-1036.40 5.15.0-1032.36 5.15.0-1037.41 5.15.0-1038.43 5.15.0-1039.44 5.15.0-1040.45 5.15.0-1042.47 5.15.0-1043.48 5.15.0-1044.49 5.15.0-1045.50 5.15.0-1047.52 5.15.0-1048.53 5.15.0-1049.54 5.15.0-1050.55 5.15.0-1051.56 5.15.0-1052.57 5.15.0-1053.58 5.15.0-1055.60 5.15.0-1056.61 5.15.0-1057.63 5.15.0-1060.66 5.15.0-1061.67 5.15.0-1062.68 5.15.0-1063.69 5.15.0-1064.70 5.15.0-1065.71 5.15.0-1066.72 5.15.0-1067.73 5.15.0-1068.74 5.15.0-1069.75 5.15.0-1070.76 5.15.0-1071.77 5.15.0-1072.78 5.15.0-1073.79 5.15.0-1076.83 5.15.0-1078.85 5.15.0-1079.86 5.15.0-1080.87 5.15.0-1081.88 5.15.0-1082.89 5.15.0-1083.90
Ubuntu 22.04 Azure	Released	60 kernels 5.15.0-1005.6 5.15.0-1007.8 5.15.0-1010.12 5.15.0-1012.15 5.15.0-1014.17 5.15.0-1017.20 5.15.0-1008.9 5.15.0-1019.24 5.15.0-1020.25 5.15.0-1021.26 5.15.0-1022.27 5.15.0-1003.4 5.15.0-1013.16 5.15.0-1023.29 5.15.0-1029.36 5.15.0-1024.30 5.15.0-1034.41 5.15.0-1035.42 5.15.0-1036.43 5.15.0-1037.44 5.15.0-1038.45 5.15.0-1039.46 5.15.0-1040.47 5.15.0-1041.48 5.15.0-1042.49 5.15.0-1045.52 5.15.0-1046.53 5.15.0-1047.54 5.15.0-1049.56 5.15.0-1044.51 5.15.0-1050.57 5.15.0-1051.59 5.15.0-1052.60 5.15.0-1053.61 5.15.0-1054.62 5.15.0-1056.64 5.15.0-1057.65 5.15.0-1058.66 5.15.0-1059.67 5.15.0-1060.69 5.15.0-1061.70 5.15.0-1063.72 5.15.0-1064.73 5.15.0-1066.75 5.15.0-1067.76 5.15.0-1068.77 5.15.0-1070.79 5.15.0-1071.80 5.15.0-1072.81 5.15.0-1073.82 5.15.0-1074.83 5.15.0-1075.84 5.15.0-1078.87 5.15.0-1079.88 5.15.0-1081.90 5.15.0-1082.91 5.15.0-1084.93 5.15.0-1086.95 5.15.0-1087.96 5.15.0-1088.97
Ubuntu 24.04	Released	27 kernels 6.8.0-35.35 6.8.0-38.38 6.8.0-36.36 6.8.0-39.39 6.8.0-40.40 6.8.0-41.41 6.8.0-44.44 6.8.0-45.45 6.8.0-31.31 6.8.0-47.47 6.8.0-48.48 6.8.0-49.49 6.8.0-50.51 6.8.0-51.52 6.8.0-52.53 6.8.0-54.56 6.8.0-55.57 6.8.0-53.55 6.8.0-56.58 6.8.0-57.59 6.8.0-58.60 6.8.0-59.61 6.8.0-60.63 6.8.0-62.65 6.8.0-63.66 6.8.0-64.67 6.8.0-71.71
Ubuntu 24.04 AWS	Planned	—

Release info

Copy page link

Open as a page

Advisory

CLSA-2025:1748945064

Operating system

CentOS 8.4 ELS

Published date

Nov 16, 2014

Project

Linux

Version

2.11.0-1~ubuntu16.04.1+tuxcare.els12

How to fix

Update command:

apt-get update
apt-get --only-upgrade install ansible*

Changelog

Insufficiently Random Passwords Leakage
Debian/patches/CVE-2020-10729.patch: Fix caching of Jinja2 expressions to prevent caching dynamic results
CVE-2020-10729

Updated packages

ansible_2.5.1+dfsg-1ubuntu0.1+tuxcare.els6_all.deb

CVE-2025-21776

Severity

Details

Overview

About vulnerability

Details

Statement

Fixes

Statement

KernelCare state

Subscribe to updates

Unsubscribe

Contact us

Message Delivered!