CVE-2023-53520
published 2025-10-01CVE-2023-53520: In the Linux kernel, the following vulnerability has been resolved: Bluetooth: Fix hci_suspend_sync crash If hci_unregister_dev() frees the hci_dev object but…
PriorityP415medium4.7CVSS 3.1
AVLACHPRLUINSUCNINAH
EPSS
0.11%
1.4th percentile
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: Fix hci_suspend_sync crash
If hci_unregister_dev() frees the hci_dev object but hci_suspend_notifier
may still be accessing it, it can cause the program to crash.
Here's the call trace:
[102152.653246] Call Trace:
[102152.653254] hci_suspend_sync+0x109/0x301 [bluetooth]
[102152.653259] hci_suspend_dev+0x78/0xcd [bluetooth]
[102152.653263] hci_suspend_notifier+0x42/0x7a [bluetooth]
[102152.653268] notifier_call_chain+0x43/0x6b
[102152.653271] __blocking_notifier_call_chain+0x48/0x69
[102152.653273] __pm_notifier_call_chain+0x22/0x39
[102152.653276] pm_suspend+0x287/0x57c
[102152.653278] state_store+0xae/0xe5
[102152.653281] kernfs_fop_write+0x109/0x173
[102152.653284] __vfs_write+0x16f/0x1a2
[102152.653287] ? selinux_file_permission+0xca/0x16f
[102152.653289] ? security_file_permission+0x36/0x109
[102152.653291] vfs_write+0x114/0x21d
[102152.653293] __x64_sys_write+0x7b/0xdb
[102152.653296] do_syscall_64+0x59/0x194
[102152.653299] entry_SYSCALL_64_after_hwframe+0x5c/0xc1
This patch holds the reference count of the hci_dev object while
processing it in hci_suspend_notifier to avoid potential crash
caused by the race condition.
Affected
30 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.1.55-1 (bookworm) | linux 6.1.55-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 9952d90ea2885d7cbf80cd233f694f09a9c0eaec < e1fa25a91091bbed691ba2996a6cee809e3309a2 | e1fa25a91091bbed691ba2996a6cee809e3309a2 |
| linux | linux | >= 9952d90ea2885d7cbf80cd233f694f09a9c0eaec < 06e2b5ad72b60f90bfe565c201346532e271f484 | 06e2b5ad72b60f90bfe565c201346532e271f484 |
| linux | linux | >= 9952d90ea2885d7cbf80cd233f694f09a9c0eaec < f9c8ce5d665653e3cf71a76349d41d7a7f7947e6 | f9c8ce5d665653e3cf71a76349d41d7a7f7947e6 |
| linux | linux | >= 9952d90ea2885d7cbf80cd233f694f09a9c0eaec < 573ebae162111063eedc6c838a659ba628f66a0f | 573ebae162111063eedc6c838a659ba628f66a0f |
| linux | linux_kernel | >= 0 < 6.1.55-1 | 6.1.55-1 |
| linux | linux_kernel | >= 0 < 6.5.6-1 | 6.5.6-1 |
| linux | linux_kernel | >= 0 < 6.5.6-1 | 6.5.6-1 |
| linux | linux_kernel | >= 5.7 < 6.1.55 | 6.1.55 |
| linux | linux_kernel | >= 6.2 < 6.5.5 | 6.5.5 |
| ubuntu | linux-azure | — | — |
| ubuntu | linux-azure-5.15 | — | — |
| ubuntu | linux-azure-fips | — | — |
| ubuntu | linux-fips | — | — |
| ubuntu | linux-gcp-5.15 | — | — |
| ubuntu | linux-gcp-fips | — | — |
| ubuntu | linux-hwe-5.15 | — | — |
| ubuntu | linux-ibm | — | — |
| ubuntu | linux-ibm-5.15 | — | — |
| ubuntu | linux-intel-iot-realtime | — | — |
| ubuntu | linux-intel-iotg | — | — |
| ubuntu | linux-intel-iotg-5.15 | — | — |
| ubuntu | linux-kvm | — | — |
| ubuntu | linux-nvidia-tegra | — | — |
CVSS provenance
nvdv3.14.7MEDIUMCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
osv4.7MEDIUM
vendor_ubuntu7.8HIGH
vendor_debian4.7MEDIUM
vendor_redhat4.7MEDIUM
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Ubuntu
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CVE-2023-2640 [HIGH] Linux kernel (GCP) vulnerabilities
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Summary: Several security issues were fixed in the Linux kernel.
Stonejiajia, Shir Tamari and Sagi Tzadik discovered that the OverlayFS
implementation in the Ubuntu Linux kernel did not properly perform
permission checks in certain situations. A local attacker could possibly
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Shir Tamari and Sagi Tzadik discovered that the OverlayFS implementation in
the Ubuntu Linux kernel did not properly perform permission checks in
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Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following sub
Ubuntu
Linux kernel (Xilinx ZynqMP) vulnerabilities
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CVE-2026-23093 [HIGH] Linux kernel (Xilinx ZynqMP) vulnerabilities
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Summary: Several security issues were fixed in the Linux kernel.
Stonejiajia, Shir Tamari and Sagi Tzadik discovered that the OverlayFS
implementation in the Ubuntu Linux kernel did not properly perform
permission checks in certain situations. A local attacker could possibly
use this to gain elevated privileges. (CVE-2023-2640)
Shir Tamari and Sagi Tzadik discovered that the OverlayFS implementation in
the Ubuntu Linux kernel did not properly perform permission checks in
certain situations. A local attacker could possibly use this to gain
elevated privileges. (CVE-2023-32629)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the fol
Ubuntu
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CVE-2026-23093 [MEDIUM] Linux kernel (Raspberry Pi) vulnerabilities
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Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
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- Block layer subsystem;
- Drivers core;
- Bluetooth drivers;
- DMA engine subsystem;
- GPU drivers;
- HID subsystem;
- Intel Trace Hub HW tracing drivers;
- IIO ADC drivers;
- IRQ chip drivers;
- Modular ISDN driver;
- LED subsystem;
- UACCE accelerator framework;
- Ethernet bonding driver;
- Network drivers;
- STMicroelectronics network drivers;
- Ethernet team driver;
- NVME drivers;
- PHY drivers;
- SLIMbus drivers;
- W1 Dallas's 1-wire bus driver;
- Xen hypervisor driver
Ubuntu
Linux kernel (Azure) vulnerabilities
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CVE-2025-22058 [HIGH] Linux kernel (Azure) vulnerabilities
Title: Linux kernel (Azure) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Qualys discovered that several vulnerabilities existed in the AppArmor
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causing denial of service, exposure of sensitive information (kernel
memory), local privilege escalation, or possibly escape a container.
(LP: #2143853, CVE-2026-23268, CVE-2026-23269, CVE-2026-23403,
CVE-2026-23404, CVE-2026-23405, CVE-2026-23406, CVE-2026-23407,
CVE-2026-23408, CVE-2026-23409, CVE-2026-23410, CVE-2026-23411)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corre
Ubuntu
Linux kernel (IBM) vulnerabilities
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CVE-2026-23087 [MEDIUM] Linux kernel (IBM) vulnerabilities
Title: Linux kernel (IBM) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- Block layer subsystem;
- Drivers core;
- Bluetooth drivers;
- DMA engine subsystem;
- GPU drivers;
- HID subsystem;
- Intel Trace Hub HW tracing drivers;
- IIO ADC drivers;
- IRQ chip drivers;
- Modular ISDN driver;
- LED subsystem;
- UACCE accelerator framework;
- Ethernet bonding driver;
- Network drivers;
- STMicroelectronics network drivers;
- Ethernet team driver;
- NVME drivers;
- PHY drivers;
- SLIMbus drivers;
- W1 Dallas's 1-wire bus driver;
- Xen hypervisor drivers;
- BTRF
Ubuntu
Linux kernel (Azure FIPS) vulnerabilities
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CVE-2026-23049 [MEDIUM] Linux kernel (Azure FIPS) vulnerabilities
Title: Linux kernel (Azure FIPS) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- Block layer subsystem;
- Drivers core;
- Bluetooth drivers;
- DMA engine subsystem;
- GPU drivers;
- HID subsystem;
- Intel Trace Hub HW tracing drivers;
- IIO ADC drivers;
- IRQ chip drivers;
- Modular ISDN driver;
- LED subsystem;
- UACCE accelerator framework;
- Ethernet bonding driver;
- Network drivers;
- STMicroelectronics network drivers;
- Ethernet team driver;
- NVME drivers;
- PHY drivers;
- SLIMbus drivers;
- W1 Dallas's 1-wire bus driver;
- Xen hypervisor drivers;
Ubuntu
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CVE-2026-23150 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- Block layer subsystem;
- Drivers core;
- Bluetooth drivers;
- DMA engine subsystem;
- GPU drivers;
- HID subsystem;
- Intel Trace Hub HW tracing drivers;
- IIO ADC drivers;
- IRQ chip drivers;
- Modular ISDN driver;
- LED subsystem;
- UACCE accelerator framework;
- Ethernet bonding driver;
- Network drivers;
- STMicroelectronics network drivers;
- Ethernet team driver;
- NVME drivers;
- PHY drivers;
- SLIMbus drivers;
- W1 Dallas's 1-wire bus driver;
- Xen hypervisor drivers;
- BTRFS file
Ubuntu
Linux kernel (HWE) vulnerabilities
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CVE-2026-23209 [MEDIUM] Linux kernel (HWE) vulnerabilities
Title: Linux kernel (HWE) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- Block layer subsystem;
- Cryptographic API;
- Drivers core;
- Bluetooth drivers;
- DMA engine subsystem;
- GPU drivers;
- HID subsystem;
- Intel Trace Hub HW tracing drivers;
- IIO ADC drivers;
- IRQ chip drivers;
- Modular ISDN driver;
- LED subsystem;
- UACCE accelerator framework;
- Ethernet bonding driver;
- Network drivers;
- STMicroelectronics network drivers;
- Ethernet team driver;
- NVME drivers;
- PHY drivers;
- SLIMbus drivers;
- W1 Dallas's 1-wire bus driver;
- Xen hyper
Ubuntu
Linux kernel (NVIDIA) vulnerabilities
vendor_ubuntu·2026-04-17·CVSS 5.5
CVE-2026-23209 [MEDIUM] Linux kernel (NVIDIA) vulnerabilities
Title: Linux kernel (NVIDIA) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- Block layer subsystem;
- Drivers core;
- Bluetooth drivers;
- DMA engine subsystem;
- GPU drivers;
- HID subsystem;
- Intel Trace Hub HW tracing drivers;
- IIO ADC drivers;
- IRQ chip drivers;
- Modular ISDN driver;
- LED subsystem;
- UACCE accelerator framework;
- Ethernet bonding driver;
- Network drivers;
- STMicroelectronics network drivers;
- Ethernet team driver;
- NVME drivers;
- PHY drivers;
- SLIMbus drivers;
- W1 Dallas's 1-wire bus driver;
- Xen hypervisor drivers;
- B
Ubuntu
Linux kernel (FIPS) vulnerabilities
vendor_ubuntu·2026-04-17·CVSS 5.5
CVE-2026-23076 [MEDIUM] Linux kernel (FIPS) vulnerabilities
Title: Linux kernel (FIPS) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- Block layer subsystem;
- Drivers core;
- Bluetooth drivers;
- DMA engine subsystem;
- GPU drivers;
- HID subsystem;
- Intel Trace Hub HW tracing drivers;
- IIO ADC drivers;
- IRQ chip drivers;
- Modular ISDN driver;
- LED subsystem;
- UACCE accelerator framework;
- Ethernet bonding driver;
- Network drivers;
- STMicroelectronics network drivers;
- Ethernet team driver;
- NVME drivers;
- PHY drivers;
- SLIMbus drivers;
- W1 Dallas's 1-wire bus driver;
- Xen hypervisor drivers;
- BTR
Ubuntu
Linux kernel (Real-time) vulnerabilities
vendor_ubuntu·2026-04-17·CVSS 5.5
CVE-2026-23076 [MEDIUM] Linux kernel (Real-time) vulnerabilities
Title: Linux kernel (Real-time) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- Block layer subsystem;
- Drivers core;
- Bluetooth drivers;
- DMA engine subsystem;
- GPU drivers;
- HID subsystem;
- Intel Trace Hub HW tracing drivers;
- IIO ADC drivers;
- IRQ chip drivers;
- Modular ISDN driver;
- LED subsystem;
- UACCE accelerator framework;
- Ethernet bonding driver;
- Network drivers;
- STMicroelectronics network drivers;
- Ethernet team driver;
- NVME drivers;
- PHY drivers;
- SLIMbus drivers;
- W1 Dallas's 1-wire bus driver;
- Xen hypervisor drivers;
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2026-04-16·CVSS 5.5
CVE-2026-23076 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- Block layer subsystem;
- Drivers core;
- Bluetooth drivers;
- DMA engine subsystem;
- GPU drivers;
- HID subsystem;
- Intel Trace Hub HW tracing drivers;
- IIO ADC drivers;
- IRQ chip drivers;
- Modular ISDN driver;
- LED subsystem;
- UACCE accelerator framework;
- Ethernet bonding driver;
- Network drivers;
- STMicroelectronics network drivers;
- Ethernet team driver;
- NVME drivers;
- PHY drivers;
- SLIMbus drivers;
- W1 Dallas's 1-wire bus driver;
- Xen hypervisor drivers;
- BTRFS file
Ubuntu
Linux kernel (NVIDIA Tegra) vulnerabilities
vendor_ubuntu·2026-04-09·CVSS 5.5
CVE-2023-54207 [MEDIUM] Linux kernel (NVIDIA Tegra) vulnerabilities
Title: Linux kernel (NVIDIA Tegra) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- Block layer subsystem;
- Cryptographic API;
- Drivers core;
- Bluetooth drivers;
- DMA engine subsystem;
- GPU drivers;
- HID subsystem;
- Intel Trace Hub HW tracing drivers;
- IIO ADC drivers;
- IRQ chip drivers;
- Modular ISDN driver;
- LED subsystem;
- UACCE accelerator framework;
- Ethernet bonding driver;
- Network drivers;
- STMicroelectronics network drivers;
- Ethernet team driver;
- NVME drivers;
- PHY drivers;
- SLIMbus drivers;
- W1 Dallas's 1-wire bus driver;
-
Red Hat
kernel: Bluetooth: Fix hci_suspend_sync crash
vendor_redhat·2025-10-01·CVSS 4.7
CVE-2023-53520 [MEDIUM] CWE-664 kernel: Bluetooth: Fix hci_suspend_sync crash
kernel: Bluetooth: Fix hci_suspend_sync crash
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: Fix hci_suspend_sync crash
If hci_unregister_dev() frees the hci_dev object but hci_suspend_notifier
may still be accessing it, it can cause the program to crash.
Here's the call trace:
[102152.653246] Call Trace:
[102152.653254] hci_suspend_sync+0x109/0x301 [bluetooth]
[102152.653259] hci_suspend_dev+0x78/0xcd [bluetooth]
[102152.653263] hci_suspend_notifier+0x42/0x7a [bluetooth]
[102152.653268] notifier_call_chain+0x43/0x6b
[102152.653271] __blocking_notifier_call_chain+0x48/0x69
[102152.653273] __pm_notifier_call_chain+0x22/0x39
[102152.653276] pm_suspend+0x287/0x57c
[102152.653278] state_store+0xae/0xe5
[102152.653281] kernfs_fop_write+0x109/0x173
[102152.653284
Debian
CVE-2023-53520: linux - In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ...
vendor_debian·2023·CVSS 4.7
CVE-2023-53520 [MEDIUM] CVE-2023-53520: linux - In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ...
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: Fix hci_suspend_sync crash If hci_unregister_dev() frees the hci_dev object but hci_suspend_notifier may still be accessing it, it can cause the program to crash. Here's the call trace: [102152.653246] Call Trace: [102152.653254] hci_suspend_sync+0x109/0x301 [bluetooth] [102152.653259] hci_suspend_dev+0x78/0xcd [bluetooth] [102152.653263] hci_suspend_notifier+0x42/0x7a [bluetooth] [102152.653268] notifier_call_chain+0x43/0x6b [102152.653271] __blocking_notifier_call_chain+0x48/0x69 [102152.653273] __pm_notifier_call_chain+0x22/0x39 [102152.653276] pm_suspend+0x287/0x57c [102152.653278] state_store+0xae/0xe5 [102152.653281] kernfs_fop_write+0x109/0x173 [102152.653284] __vfs_write+0x16f/0x1a2 [102152.653287] ? sel
GHSA
GHSA-fxhr-ffpx-g953: In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: Fix hci_suspend_sync crash
If hci_unregister_dev() frees the hci_dev
ghsa_unreviewed·2025-10-01
CVE-2023-53520 [MEDIUM] CWE-362 GHSA-fxhr-ffpx-g953: In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: Fix hci_suspend_sync crash
If hci_unregister_dev() frees the hci_dev
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: Fix hci_suspend_sync crash
If hci_unregister_dev() frees the hci_dev object but hci_suspend_notifier
may still be accessing it, it can cause the program to crash.
Here's the call trace:
[102152.653246] Call Trace:
[102152.653254] hci_suspend_sync+0x109/0x301 [bluetooth]
[102152.653259] hci_suspend_dev+0x78/0xcd [bluetooth]
[102152.653263] hci_suspend_notifier+0x42/0x7a [bluetooth]
[102152.653268] notifier_call_chain+0x43/0x6b
[102152.653271] __blocking_notifier_call_chain+0x48/0x69
[102152.653273] __pm_notifier_call_chain+0x22/0x39
[102152.653276] pm_suspend+0x287/0x57c
[102152.653278] state_store+0xae/0xe5
[102152.653281] kernfs_fop_write+0x109/0x173
[102152.653284] __vfs_write+0x16f/0x1a2
[102152.653287] ? s
OSV
CVE-2023-53520: In the Linux kernel, the following vulnerability has been resolved: Bluetooth: Fix hci_suspend_sync crash If hci_unregister_dev() frees the hci_dev ob
osv·2025-10-01·CVSS 4.7
CVE-2023-53520 [MEDIUM] CVE-2023-53520: In the Linux kernel, the following vulnerability has been resolved: Bluetooth: Fix hci_suspend_sync crash If hci_unregister_dev() frees the hci_dev ob
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: Fix hci_suspend_sync crash If hci_unregister_dev() frees the hci_dev object but hci_suspend_notifier may still be accessing it, it can cause the program to crash. Here's the call trace: [102152.653246] Call Trace: [102152.653254] hci_suspend_sync+0x109/0x301 [bluetooth] [102152.653259] hci_suspend_dev+0x78/0xcd [bluetooth] [102152.653263] hci_suspend_notifier+0x42/0x7a [bluetooth] [102152.653268] notifier_call_chain+0x43/0x6b [102152.653271] __blocking_notifier_call_chain+0x48/0x69 [102152.653273] __pm_notifier_call_chain+0x22/0x39 [102152.653276] pm_suspend+0x287/0x57c [102152.653278] state_store+0xae/0xe5 [102152.653281] kernfs_fop_write+0x109/0x173 [102152.653284] __vfs_write+0x16f/0x1a2 [102152.653287] ? sel
No detection rules found.
No public exploits indexed.
2025-10-01
Published