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🛡️ CVE-2023-52477 on Ubuntu — linux

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

In the Linux kernel, the following vulnerability has been resolved: usb: hub: Guard against accesses to uninitialized BOS descriptors Many functions in drivers/usb/core/hub.c and drivers/usb/core/hub.h access fields inside udev->bos without checking if it was allocated and initialized. If usb_get_bos_descriptor() fails for whatever reason, udev->bos will be NULL and those accesses will result in a crash: BUG: kernel NULL pointer dereference, address: 0000000000000018 PGD 0 P4D 0 Oops: 0000 [#1] PREEMPT SMP NOPTI CPU: 5 PID: 17818 Comm: kworker/5:1 Tainted: G W 5.15.108-18910-gab0e1cb584e1 #1 <HASH:1f9e 1> Hardware name: Google Kindred/Kindred, BIOS Google_Kindred.12672.413.0 02/03/2021 Workqueue: usb_hub_wq hub_event RIP: 0010:hub_port_reset+0x193/0x788 Code: 89 f7 e8 20 f7 15 00 48 8b 43 08 80 b8 96 03 00 00 03 75 36 0f b7 88 92 03 00 00 81 f9 10 03 00 00 72 27 48 8b 80 a8 03 00 00 <48> 83 78 18 00 74 19 48 89 df 48 8b 75 b0 ba 02 00 00 00 4c 89 e9 RSP: 0018:ffffab740c53fcf8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffffa1bc5f678000 RCX: 0000000000000310 RDX: fffffffffffffdff RSI: 0000000000000286 RDI: ffffa1be9655b840 RBP: ffffab740c53fd70 R08: 00001b7d5edaa20c R09: ffffffffb005e060 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 R13: ffffab740c53fd3e R14: 0000000000000032 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffffa1be96540000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000018 CR3: 000000022e80c005 CR4: 00000000003706e0 Call Trace: hub_event+0x73f/0x156e ? hub_activate+0x5b7/0x68f process_one_work+0x1a2/0x487 worker_thread+0x11a/0x288 kthread+0x13a/0x152 ? process_one_work+0x487/0x487 ? kthread_associate_blkcg+0x70/0x70 ret_from_fork+0x1f/0x30 Fall back to a default behavior if the BOS descriptor isn't accessible and skip all the functionalities that depend on it: LPM support checks, Super Speed capabilitiy checks, U1/U2 states setup.

Distribution advisory

This page covers CVE-2023-52477 as tracked by Ubuntu, for the package linux. The fix is available in version 5.15.0-94.104; earlier versions remain affected.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

  • Attack vector: Local — a local account, shell or session on the host is needed.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: Low — an ordinary user account is enough.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: None.
  • Integrity impact: None.
  • Availability impact: High — total loss, or loss the attacker controls.

Affected software

UBUNTU-CVE-2023-52477 is recorded against 115 packages.

  • linux (fixed in 5.15.0-94.104)
  • linux-allwinner-5.19
  • linux-aws (fixed in 5.15.0-1053.58)
  • linux-aws-5.0
  • linux-aws-5.11
  • linux-aws-5.13
  • linux-aws-5.15 (fixed in 5.15.0-1053.58~20.04.1)
  • linux-aws-5.19
  • linux-aws-5.3
  • linux-aws-5.4 (fixed in 5.4.0-1118.128~18.04.1)
  • linux-aws-5.8
  • linux-aws-6.2
  • linux-aws-6.5
  • linux-aws-fips (fixed in 5.15.0-1053.58+fips1)
  • linux-aws-hwe (fixed in 4.15.0-1184.197~16.04.1)
  • linux-azure (fixed in 5.15.0-1056.64)
  • linux-azure-4.15 (fixed in 4.15.0-1192.207)
  • linux-azure-5.11
  • linux-azure-5.13
  • linux-azure-5.15 (fixed in 5.15.0-1056.64~20.04.1)
  • linux-azure-5.19
  • linux-azure-5.3
  • linux-azure-5.4 (fixed in 5.4.0-1123.130~18.04.1)
  • linux-azure-5.8
Show the remaining 91 packages
  • linux-azure-6.2
  • linux-azure-6.5
  • linux-azure-edge
  • linux-azure-fde
  • linux-azure-fde-5.19
  • linux-azure-fde-6.2
  • linux-azure-fde-6.8
  • linux-azure-fips
  • linux-bluefield
  • linux-fips (fixed in 5.15.0-94.104+fips1)
  • linux-gcp (fixed in 5.15.0-1051.59)
  • linux-gcp-4.15 (fixed in 4.15.0-1177.194)
  • linux-gcp-5.11
  • linux-gcp-5.13
  • linux-gcp-5.15 (fixed in 5.15.0-1051.59~20.04.1)
  • linux-gcp-5.19
  • linux-gcp-5.3
  • linux-gcp-5.4 (fixed in 5.4.0-1122.131~18.04.1)
  • linux-gcp-5.8
  • linux-gcp-6.2
  • linux-gcp-6.5
  • linux-gcp-fips (fixed in 5.15.0-1055.63+fips2)
  • linux-gke (fixed in 5.15.0-1050.55)
  • linux-gke-4.15
  • linux-gke-5.15
  • linux-gke-5.4
  • linux-gkeop (fixed in 5.15.0-1036.42)
  • linux-gkeop-5.15 (fixed in 5.15.0-1036.42~20.04.1)
  • linux-gkeop-5.4
  • linux-hwe
  • linux-hwe-5.11
  • linux-hwe-5.13
  • linux-hwe-5.15 (fixed in 5.15.0-94.104~20.04.1)
  • linux-hwe-5.19
  • linux-hwe-5.4 (fixed in 5.4.0-171.189~18.04.1)
  • linux-hwe-5.8
  • linux-hwe-6.2
  • linux-hwe-6.5
  • linux-hwe-edge
  • linux-ibm (fixed in 5.15.0-1046.49)
  • linux-ibm-5.15 (fixed in 5.15.0-1046.49~20.04.1)
  • linux-ibm-5.4 (fixed in 5.4.0-1065.70~18.04.1)
  • linux-intel-5.13
  • linux-intel-iot-realtime (fixed in 5.15.0-1046.48)
  • linux-intel-iotg (fixed in 5.15.0-1047.53)
  • linux-intel-iotg-5.15 (fixed in 5.15.0-1048.54~20.04.1)
  • linux-iot (fixed in 5.4.0-1030.31)
  • linux-kvm (fixed in 5.15.0-1050.55)
  • linux-lowlatency (fixed in 5.15.0-94.104)
  • linux-lowlatency-hwe-5.15 (fixed in 5.15.0-94.104~20.04.1)
  • linux-lowlatency-hwe-5.19
  • linux-lowlatency-hwe-6.2
  • linux-lowlatency-hwe-6.5
  • linux-lts-xenial (fixed in 4.4.0-272.306~14.04.1)
  • linux-nvidia (fixed in 5.15.0-1044.44)
  • linux-nvidia-6.2
  • linux-nvidia-6.5 (fixed in 6.5.0-1014.14)
  • linux-nvidia-tegra (fixed in 5.15.0-1022.22)
  • linux-nvidia-tegra-5.15 (fixed in 5.15.0-1022.22~20.04.1)
  • linux-nvidia-tegra-igx (fixed in 5.15.0-1009.9)
  • linux-oem
  • linux-oem-5.10
  • linux-oem-5.13
  • linux-oem-5.14
  • linux-oem-5.17
  • linux-oem-5.6
  • linux-oem-6.0
  • linux-oem-6.1
  • linux-oem-6.5
  • linux-oracle (fixed in 5.15.0-1051.57)
  • linux-oracle-5.0
  • linux-oracle-5.11
  • linux-oracle-5.13
  • linux-oracle-5.15 (fixed in 5.15.0-1051.57~20.04.1)
  • linux-oracle-5.3
  • linux-oracle-5.4 (fixed in 5.4.0-1117.126~18.04.1)
  • linux-oracle-5.8
  • linux-oracle-6.5
  • linux-raspi (fixed in 5.15.0-1046.49)
  • linux-raspi-5.4 (fixed in 5.4.0-1102.114~18.04.1)
  • linux-raspi-realtime
  • linux-raspi2
  • linux-realtime (fixed in 5.15.0-1054.60)
  • linux-riscv
  • linux-riscv-5.11
  • linux-riscv-5.15 (fixed in 5.15.0-1049.53~20.04.2)
  • linux-riscv-5.19
  • linux-riscv-5.8
  • linux-starfive-5.19
  • linux-starfive-6.2
  • linux-xilinx-zynqmp (fixed in 5.15.0-1027.31)

Timeline and source

Published on 29 February 2024 and last revised on 18 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

ubuntu.com (Report)
git.kernel.org (Report)
www.cve.org (Report)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)

Other advisories for this package

linux has other advisories on record. If you are patching this one, these are worth checking on the same host:

CVE-2023-52477 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2024-02-29
Updated 2026-08-20
Modified 2026-08-18
Fix URL N/A

Affected Packages

Software From version Fixed in
linux — 5.15.0-94.104
linux-allwinner-5.19 — —
linux-aws — 5.15.0-1053.58
linux-aws-5.0 — —
linux-aws-5.11 — —
linux-aws-5.13 — —
linux-aws-5.15 — 5.15.0-1053.58~20.04.1
linux-aws-5.19 — —
linux-aws-5.3 — —
linux-aws-5.4 — 5.4.0-1118.128~18.04.1
linux-aws-5.8 — —
linux-aws-6.2 — —
linux-aws-6.5 — —
linux-aws-fips — 5.15.0-1053.58+fips1
linux-aws-hwe — 4.15.0-1184.197~16.04.1
linux-azure — 5.15.0-1056.64
linux-azure-4.15 — 4.15.0-1192.207
linux-azure-5.11 — —
linux-azure-5.13 — —
linux-azure-5.15 — 5.15.0-1056.64~20.04.1
linux-azure-5.19 — —
linux-azure-5.3 — —
linux-azure-5.4 — 5.4.0-1123.130~18.04.1
linux-azure-5.8 — —
linux-azure-6.2 — —
linux-azure-6.5 — —
linux-azure-edge — —
linux-azure-fde — —
linux-azure-fde-5.19 — —
linux-azure-fde-6.2 — —
linux-azure-fde-6.8 — —
linux-azure-fips — —
linux-bluefield — —
linux-fips — 5.15.0-94.104+fips1
linux-gcp — 5.15.0-1051.59
linux-gcp-4.15 — 4.15.0-1177.194
linux-gcp-5.11 — —
linux-gcp-5.13 — —
linux-gcp-5.15 — 5.15.0-1051.59~20.04.1
linux-gcp-5.19 — —
linux-gcp-5.3 — —
linux-gcp-5.4 — 5.4.0-1122.131~18.04.1
linux-gcp-5.8 — —
linux-gcp-6.2 — —
linux-gcp-6.5 — —
linux-gcp-fips — 5.15.0-1055.63+fips2
linux-gke — 5.15.0-1050.55
linux-gke-4.15 — —
linux-gke-5.15 — —
linux-gke-5.4 — —
linux-gkeop — 5.15.0-1036.42
linux-gkeop-5.15 — 5.15.0-1036.42~20.04.1
linux-gkeop-5.4 — —
linux-hwe — —
linux-hwe-5.11 — —
linux-hwe-5.13 — —
linux-hwe-5.15 — 5.15.0-94.104~20.04.1
linux-hwe-5.19 — —
linux-hwe-5.4 — 5.4.0-171.189~18.04.1
linux-hwe-5.8 — —
linux-hwe-6.2 — —
linux-hwe-6.5 — —
linux-hwe-edge — —
linux-ibm — 5.15.0-1046.49
linux-ibm-5.15 — 5.15.0-1046.49~20.04.1
linux-ibm-5.4 — 5.4.0-1065.70~18.04.1
linux-intel-5.13 — —
linux-intel-iot-realtime — 5.15.0-1046.48
linux-intel-iotg — 5.15.0-1047.53
linux-intel-iotg-5.15 — 5.15.0-1048.54~20.04.1
linux-iot — 5.4.0-1030.31
linux-kvm — 5.15.0-1050.55
linux-lowlatency — 5.15.0-94.104
linux-lowlatency-hwe-5.15 — 5.15.0-94.104~20.04.1
linux-lowlatency-hwe-5.19 — —
linux-lowlatency-hwe-6.2 — —
linux-lowlatency-hwe-6.5 — —
linux-lts-xenial — 4.4.0-272.306~14.04.1
linux-nvidia — 5.15.0-1044.44
linux-nvidia-6.2 — —
linux-nvidia-6.5 — 6.5.0-1014.14
linux-nvidia-tegra — 5.15.0-1022.22
linux-nvidia-tegra-5.15 — 5.15.0-1022.22~20.04.1
linux-nvidia-tegra-igx — 5.15.0-1009.9
linux-oem — —
linux-oem-5.10 — —
linux-oem-5.13 — —
linux-oem-5.14 — —
linux-oem-5.17 — —
linux-oem-5.6 — —
linux-oem-6.0 — —
linux-oem-6.1 — —
linux-oem-6.5 — —
linux-oracle — 5.15.0-1051.57
linux-oracle-5.0 — —
linux-oracle-5.11 — —
linux-oracle-5.13 — —
linux-oracle-5.15 — 5.15.0-1051.57~20.04.1
linux-oracle-5.3 — —
linux-oracle-5.4 — 5.4.0-1117.126~18.04.1
linux-oracle-5.8 — —
linux-oracle-6.5 — —
linux-raspi — 5.15.0-1046.49
linux-raspi-5.4 — 5.4.0-1102.114~18.04.1
linux-raspi-realtime — —
linux-raspi2 — —
linux-realtime — 5.15.0-1054.60
linux-riscv — —
linux-riscv-5.11 — —
linux-riscv-5.15 — 5.15.0-1049.53~20.04.2
linux-riscv-5.19 — —
linux-riscv-5.8 — —
linux-starfive-5.19 — —
linux-starfive-6.2 — —
linux-xilinx-zynqmp — 5.15.0-1027.31

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