SB2023081434 - Ubuntu update for linux
Published: August 14, 2023
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 13 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) 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.
3) Use-after-free (CVE-ID: CVE-2023-3141)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the r592_remove() function of drivers/memstick/host/r592.c in media access in the Linux kernel. A local user can trigger a use-after-free error and escalate privileges on the system.
4) NULL pointer dereference (CVE-ID: CVE-2023-32248)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in ksmbd in Linux kernel when handling SMB2_TREE_CONNECT and SMB2_QUERY_INFO commands. A remote attacker can send specially crafted data to the system and perform a denial of service (DoS) attack.
5) Race condition (CVE-ID: CVE-2023-32254)
The vulnerability allows a remote attacker to execute arbitrary code on the system.
The vulnerability exists due to a race condition within fs/ksmbd/mgmt/tree_connect.c in ksmbd in Linux kernel when processing SMB2_TREE_DISCONNECT commands. A remote attacker can trigger a use-after-free error using concurrent smb2 tree disconnect requests and execute arbitrary code on the system.
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) Double Free (CVE-ID: CVE-2023-3312)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error within drivers/cpufreq/qcom-cpufreq-hw.c in Linux kernel. A local user can pass specially crafted data to the system, trigger a double free error and perform a denial of service (DoS) attack.
8) Use-after-free (CVE-ID: CVE-2023-3317)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the mt7921_check_offload_capability() function in drivers/net/wireless/mediatek/mt76/mt7921/init.c. A local user can trigger a use-after-free error and execute arbitrary code on the system.
9) 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.
10) 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.
11) Use-after-free (CVE-ID: CVE-2023-35826)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the cedrus_remove() function in drivers/staging/media/sunxi/cedrus/cedrus.c. A local user can trigger a use-after-free error and execute arbitrary code on the system.
12) 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.
13) Use-after-free (CVE-ID: CVE-2023-35829)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the rkvdec_remove() function in drivers/staging/media/rkvdec/rkvdec.c. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.
Remediation
Install update from vendor's website.