SB2023051062 - Ubuntu update for linux-oem-5.17
Published: May 10, 2023 Updated: June 17, 2025
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 12 secuirty vulnerabilities.
1) Security restrictions bypass (CVE-ID: CVE-2022-2590)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to improper access restrictions to shared memory (shmem / tmpfs). A local user can write to arbitrary files without having write permissions.
2) NULL pointer dereference (CVE-ID: CVE-2022-3303)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in the Linux kernel sound subsystem due to improper locking when handling the SNDCTL_DSP_SYNC ioctl. A privileged local user can trigger a NULL pointer dereference error and perform a denial of service (DoS) attack.
3) Use-after-free (CVE-ID: CVE-2022-3586)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a use-after-free error in the way the sch_sfb enqueue function used the socket buffer (SKB) cb
field after the same SKB had been enqueued (and freed) into a child
qdisc. A local user can perform a denial of service (DoS) attack.
4) Use-after-free (CVE-ID: CVE-2022-40307)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a use-after-free error within the drivers/firmware/efi/capsule-loader.c in Linux kernel. A local user can trigger a use-after-free error and perform a denial of service (DoS) attack.
5) Double Free (CVE-ID: CVE-2022-4095)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within the cmd_hdl_filter() function in drivers/staging/rtl8712/rtl8712_cmd.c. A local user can trigger a double free error and execute arbitrary code with escalated privileges.
6) Improper access control (CVE-ID: CVE-2022-4662)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper access restrictions in the Linux kernel USB core subsystem in the way user attaches usb device. A local user can perform a denial of service (DoS) attack.
7) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2023-0386)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to unauthorized access to execution of setuid files in OverlayFS subsystem when copying a capable file from a nosuid mount into another mount. A local user can execute arbitrary code with root privileges.
8) NULL pointer dereference (CVE-ID: CVE-2023-0468)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in the io_poll_check_events() function in io_uring/poll.c within the io_uring subcomponent in the Linux Kernel. A local user can perform a denial of service (DoS) attack.
9) Use-after-free (CVE-ID: CVE-2023-1829)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the tcindex_delete() function. A local user can trigger a use-after-free error and execute arbitrary code with root privileges.
10) Use-after-free (CVE-ID: CVE-2023-1859)
The vulnerability allows a malicious guest to gain access to sensitive information or perform a denial of service (DoS) attack.
The vulnerability exists due to a use-after-free error within the xen_9pfs_front_removet() function in net/9p/trans_xen.c in Xen transport for 9pfs. A malicious guest VM can trigger a use-after-free error and gain access to sensitive information of the hypervisor or crash it.
11) Type Confusion (CVE-ID: CVE-2023-23455)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a type confusion error within the atm_tc_enqueue() function in net/sched/sch_atm.c in the Linux kernel. A local user can trigger a type confusion error and perform a denial of service (DoS) attack.
12) Double Free (CVE-ID: CVE-2023-26545)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a double free in net/mpls/af_mpls.c during the renaming of a device. A local user can trigger a double free error and execute arbitrary code with elevated privileges.
Remediation
Install update from vendor's website.