SB2023090903 - Ubuntu update for linux-azure-5.4
Published: September 9, 2023
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 9 secuirty vulnerabilities.
1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2023-2002)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to improper permissions check in the Bluetooth subsystem when handling ioctl system calls of HCI sockets. A local user can acquire a trusted socket, leading to unauthorized execution of management commands.
2) Use-after-free (CVE-ID: CVE-2023-21255)
The vulnerability allows a local application to escalate privileges on the system.
The
vulnerability exists due to insufficient validation of user-supplied
input within the binder_transaction_buffer_release() function in Binder subsystem in Android kernel. A local application
can trigger a use-after-fee error and execute arbitrary code with elevated privileges.
3) Out-of-bounds write (CVE-ID: CVE-2023-2163)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error in BPF verifier caused by improper marking of
registers for precision tracking in certain situations. A local user can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.
4) Improper locking (CVE-ID: CVE-2023-2269)
The vulnerability allows a local user to perform a denial of service attack (DoS).
The vulnerability exists due to double-locking error in table_clear in drivers/md/dm-ioctl.c. A local user can perform a denial of service (DoS) attack.
5) Deadlock (CVE-ID: CVE-2023-31084)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a deadlock in drivers/media/dvb-core/dvb_frontend.c when a task is in !TASK_RUNNING. A local user can trigger a deadlock and crash the kernel.
6) Out-of-bounds read (CVE-ID: CVE-2023-3268)
The vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition within the relay_file_read_start_pos() function in kernel/relay.c in the relayfs. A local user can trigger an out-of-bounds read error and read contents of memory on the system or crash the kernel.
7) Race condition (CVE-ID: CVE-2023-35823)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a race condition within the saa7134_finidev() function in drivers/media/pci/saa7134/saa7134-core.c. A local user can exploit the race and gain unauthorized access to sensitive information and escalate privileges on the system.
8) Use-after-free (CVE-ID: CVE-2023-35824)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the dm1105_remove() function in drivers/media/pci/dm1105/dm1105.c. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.
9) Race condition (CVE-ID: CVE-2023-35828)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a race condition within the renesas_usb3_remove() function in drivers/usb/gadget/udc/renesas_usb3.c. A local user can exploit the race and gain unauthorized access to sensitive information and escalate privileges on the system.
Remediation
Install update from vendor's website.