SB2023091953 - SUSE update for the Linux Kernel
Published: September 19, 2023
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 16 secuirty vulnerabilities.
1) Integer overflow (CVE-ID: CVE-2022-36402)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to integer overflow in drivers/gpu/vmxgfx/vmxgfx_execbuf.c. A local user can trigger an integer overflow and crash the kernel.
2) Time-of-check Time-of-use (TOCTOU) Race Condition (CVE-ID: CVE-2023-2007)
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to a race condition in dpt_i2o driver. A local privileged user can gain access to sensitive kernel information.
3) Division by zero (CVE-ID: CVE-2023-20588)
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to a divide by zero error that can return speculative data. A local user can gain access to potentially sensitive information.
4) Buffer overflow (CVE-ID: CVE-2023-34319)
The vulnerability allows a malicious guest to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error in netback when processing certain packets. A malicious guest can send specially crafted packets to the backend, trigger memory corruption and crash the hypervisor.
5) NULL pointer dereference (CVE-ID: CVE-2023-3772)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error within the xfrm_update_ae_params() function in the IP framework for transforming packets (XFRM subsystem). A local user with CAP_NET_ADMIN privileges can perform a denial of service (DoS) attack.
6) Out-of-bounds write (CVE-ID: CVE-2023-3812)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within the TUN/TAP device driver in Linux kernel. A local user can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.
7) Use-after-free (CVE-ID: CVE-2023-3863)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the nfc_llcp_find_local() function in net/nfc/llcp_core.c in NFC implementation in Linux kernel. A local user can execute arbitrary code with elevated privileges.
8) Use-after-free (CVE-ID: CVE-2023-40283)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the l2cap_sock_release() function in net/bluetooth/l2cap_sock.c. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.
9) Use-after-free (CVE-ID: CVE-2023-4128)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within net/sched/cls_fw.c in classifiers (cls_fw, cls_u32, and cls_route) in the Linux Kernel. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.
10) Use-after-free (CVE-ID: CVE-2023-4132)
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 siano smsusb module in the Linux kernel. A local user can trigger a use-after-free error and crash the kernel.
11) Use-after-free (CVE-ID: CVE-2023-4133)
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 cxgb4 driver in the Linux kernel. A local user can trigger a use-after-free and crash the kernel.
12) Use-after-free (CVE-ID: CVE-2023-4134)
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 cyttsp4_watchdog_work() in cyttsp4_core driver. A local user can trigger memory corruption and crash the kernel.
13) Type Confusion (CVE-ID: CVE-2023-4194)
The vulnerability allows a local user to bypass implemented security restrictions.
The vulnerability exists due to a type confusion error in TUN/TAP functionality. A local user can bypass network filters and gain unauthorized access to some resources.
The vulnerability exists due to incomplete fix for #VU72742 (CVE-2023-1076).
14) NULL pointer dereference (CVE-ID: CVE-2023-4385)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error within the dbFree() function in fs/jfs/jfs_dmap.c in the journaling file system (JFS). A local user can perform a denial of service (DoS) attack.
15) Double Free (CVE-ID: CVE-2023-4387)
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to a boundary error within the vmxnet3_rq_alloc_rx_buf() function in drivers/net/vmxnet3/vmxnet3_drv.c in VMware vmxnet3 ethernet NIC driver. A local user can trigger a double free error and gain access to sensitive information or crash the kernel.
16) NULL pointer dereference (CVE-ID: CVE-2023-4459)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error within the vmxnet3_rq_cleanup() function in drivers/net/vmxnet3/vmxnet3_drv.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.