SB2023061902 - Ubuntu update for linux-oem-6.1
Published: June 19, 2023 Updated: June 16, 2024
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 7 vulnerabilities.
1) Out-of-bounds read (CVE-ID: CVE-2023-1380)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition within the Broadcom Full MAC Wi-Fi driver (brcmfmac.ko). A local user can trigger an out-of-bounds read error and read contents of kernel memory on the system.
2) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2023-2002)
CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/U:Clear
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.
3) Reachable Assertion (CVE-ID: CVE-2023-2156)
CWE-ID: CWE-617 - Reachable Assertion
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a reachable assertion when handling IPv6 RPL protocol. A remote attacker can send specially crafted packets to the system and perform a denial of service (DoS) attack.
4) Improper locking (CVE-ID: CVE-2023-2269)
CWE-ID: CWE-667 - Improper Locking
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
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) Out-of-bounds write (CVE-ID: CVE-2023-31436)
CWE-ID: CWE-787 - Out-of-bounds write
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within the qfq_change_class() function in net/sched/sch_qfq.c when handling the MTU value provided to the QFQ Scheduler. A local user can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.
6) Race condition (CVE-ID: CVE-2023-32250)
CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to a race condition within the fs/ksmbd/connection.c in ksmbd in Linux kernel when processing SMB2_SESSION_SETUP commands. A remote attacker can exploit the race by sending concurrent session setup and logoff request and execute arbitrary code on the system.
7) Race condition (CVE-ID: CVE-2023-32254)
CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
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.
Remediation
Install update from vendor's website.