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CVE-2023-2163

Incorrect Verifier Branch Pruning Logic Leads To Arbitrary Read/Write In Linux Kernel and Lateral Privilege Escalation

Incorrect verifier pruning in BPF in Linux Kernel >=5.4 leads to unsafe code paths being incorrectly marked as safe, resulting in arbitrary read/write in kernel memory, lateral privilege escalation, and container escape.

CVSS 3.1 · 10 Critical EPSS 3.6% KEV · Not listed
Vendors
Linux Redhat
Products
Linux Kernel Enterprise Linux Rhel Aus and 4 more
CVE-2023-1192

Use-after-free in smb2_is_status_io_timeout()

A use-after-free flaw was found in smb2_is_status_io_timeout() in CIFS in the Linux Kernel. After CIFS transfers response data to a system call, there are still local variable points to the memory region, and if the system call frees it faster than CIFS uses it, CIFS will access a free memory region, leading to a denial of service.

CVSS 3.1 · 6.5 Medium EPSS 1.1% KEV · Not listed
Vendors
Linux Redhat
Products
Linux Kernel Enterprise Linux Rhel Aus and 4 more
CVE-2023-1075

kernel: net/tls: tls_is_tx_ready() checked list_entry

A flaw was found in the Linux Kernel. The tls_is_tx_ready() incorrectly checks for list emptiness, potentially accessing a type confused entry to the list_head, leaking the last byte of the confused field that overlaps with rec->tx_ready.

CVSS 3.1 · 3.3 Low EPSS < 1% KEV · Not listed
Vendors
Linux Redhat
Products
Linux Kernel Enterprise Linux Rhel Eus and 1 more
CVE-2023-1079

kernel: hid: Use After Free in asus_remove()

A flaw was found in the Linux kernel. A use-after-free may be triggered in asus_kbd_backlight_set when plugging/disconnecting in a malicious USB device, which advertises itself as an Asus device. Similarly to the previous known CVE-2023-25012, but in asus devices, the work_struct may be scheduled by the LED controller while the device is disconnecting, triggering a use-after-free on the struct asus_kbd_leds *led structure. A malicious USB device may exploit the issue to cause memory corruption with controlled data.

CVSS 3.1 · 6.8 Medium EPSS < 1% KEV · Not listed
Vendors
Linux Redhat
Products
Linux Kernel Enterprise Linux Rhel Eus and 1 more
CVE-2023-1637

kernel: save/restore speculative MSRs during S3 suspend/resume

A flaw that boot CPU could be vulnerable for the speculative execution behavior kind of attacks in the Linux kernel X86 CPU Power management options functionality was found in the way user resuming CPU from suspend-to-RAM. A local user could use this flaw to potentially get unauthorized access to some memory of the CPU similar to the speculative execution behavior kind of attacks.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
Linux Redhat
Products
Linux Kernel Enterprise Linux Rhel Aus and 4 more
CVE-2023-1998

Spectre v2 SMT mitigations problem in Linux kernel

The Linux kernel allows userspace processes to enable mitigations by calling prctl with PR_SET_SPECULATION_CTRL which disables the speculation feature as well as by using seccomp. We had noticed that on VMs of at least one major cloud provider, the kernel still left the victim process exposed to attacks in some cases even after enabling the spectre-BTI mitigation with prctl. The same behavior can be observed on a bare-metal machine when forcing the mitigation to IBRS on boot command line. This happened because when plain IBRS was enabled (not enhanced IBRS), the kernel had some logic that determined that STIBP was not needed. The IBRS bit implicitly protects against cross-thread branch target injection. However, with legacy IBRS, the IBRS bit was cleared on returning to userspace, due to performance reasons, which disabled the implicit STIBP and left userspace threads vulnerable to cross-thread branch target injection against which STIBP protects.

CVSS 3.1 · 5.6 Medium EPSS 1.4% KEV · Not listed
Vendors
Debian Linux Redhat
Products
Debian Linux Linux Kernel Enterprise Linux and 2 more
CVE-2023-0461

Use-after-free vulnerability in the Linux Kernel

There is a use-after-free vulnerability in the Linux Kernel which can be exploited to achieve local privilege escalation. To reach the vulnerability kernel configuration flag CONFIG_TLS or CONFIG_XFRM_ESPINTCP has to be configured, but the operation does not require any privilege. There is a use-after-free bug of icsk_ulp_data of a struct inet_connection_sock. When CONFIG_TLS is enabled, user can install a tls context (struct tls_context) on a connected tcp socket. The context is not cleared if this socket is disconnected and reused as a listener. If a new socket is created from the listener, the context is inherited and vulnerable. The setsockopt TCP_ULP operation does not require any privilege. We recommend upgrading past commit 2c02d41d71f90a5168391b6a5f2954112ba2307c

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Linux Redhat
Products
Linux Kernel Enterprise Linux Rhel Aus and 4 more
CVE-2023-0458

Spectre V1 Gadget in do_prlimit in the Linux Kernel

A speculative pointer dereference problem exists in the Linux Kernel on the do_prlimit() function. The resource argument value is controlled and is used in pointer arithmetic for the 'rlim' variable and can be used to leak the contents. We recommend upgrading past version 6.1.8 or commit 739790605705ddcf18f21782b9c99ad7d53a8c11

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Debian Linux Redhat
Products
Debian Linux Linux Kernel Enterprise Linux and 2 more
CVE-2022-40982

hw: Intel: Gather Data Sampling (GDS) side channel vulnerability

Information exposure through microarchitectural state after transient execution in certain vector execution units for some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.

CVSS 3.1 · 6.5 Medium EPSS 3.0% KEV · Not listed
Vendors
Debian Intel Netapp and 2 more
Products
Debian Linux Celeron 5205u Celeron 5205u Firmware and 1055 more
CVE-2022-28733

Integer underflow in grub_net_recv_ip4_packets

Integer underflow in grub_net_recv_ip4_packets; A malicious crafted IP packet can lead to an integer underflow in grub_net_recv_ip4_packets() function on rsm->total_len value. Under certain circumstances the total_len value may end up wrapping around to a small integer number which will be used in memory allocation. If the attack succeeds in such way, subsequent operations can write past the end of the buffer.

CVSS 3.1 · 8.1 High EPSS 1.3% KEV · Not listed
Vendors
Gnu Redhat
Products
Grub2 Enterprise Linux Rhel E4s and 2 more
CVE-2022-23521

gitattributes parsing integer overflow in git

Git is distributed revision control system. gitattributes are a mechanism to allow defining attributes for paths. These attributes can be defined by adding a `.gitattributes` file to the repository, which contains a set of file patterns and the attributes that should be set for paths matching this pattern. When parsing gitattributes, multiple integer overflows can occur when there is a huge number of path patterns, a huge number of attributes for a single pattern, or when the declared attribute names are huge. These overflows can be triggered via a crafted `.gitattributes` file that may be part of the commit history. Git silently splits lines longer than 2KB when parsing gitattributes from a file, but not when parsing them from the index. Consequentially, the failure mode depends on whether the file exists in the working tree, the index or both. This integer overflow can result in arbitrary heap reads and writes, which may result in remote code execution. The problem has been patched in the versions published on 2023-01-17, going back to v2.30.7. Users are advised to upgrade. There are no known workarounds for this issue.

CVSS 3.1 · 9.8 Critical EPSS 56.3% KEV · Not listed
Vendors
Git-scm Redhat
Products
Git Enterprise Linux Rhel Aus and 5 more
CVE-2022-21216

kernel: Intel firmware update for insufficient granularity of access control in out-of-band management in some Intel Atom and Intel Xeon Scalable Processors

Insufficient granularity of access control in out-of-band management in some Intel(R) Atom and Intel Xeon Scalable Processors may allow a privileged user to potentially enable escalation of privilege via adjacent network access.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Intel Redhat
Products
Atom C5310 Atom C5310 Firmware Atom C5315 and 131 more
CVE-2021-3620

Ansible: ansible-connection module discloses sensitive info in traceback error message

A flaw was found in Ansible Engine's ansible-connection module, where sensitive information such as the Ansible user credentials is disclosed by default in the traceback error message. The highest threat from this vulnerability is to confidentiality.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Ansible Automation Platform Ansible Automation Platform Early Access Ansible Engine and 9 more
CVE-2023-1855

kernel: use-after-free bug in remove function xgene_hwmon_remove

A use-after-free flaw was found in xgene_hwmon_remove in drivers/hwmon/xgene-hwmon.c in the Hardware Monitoring Linux Kernel Driver (xgene-hwmon). This flaw could allow a local attacker to crash the system due to a race problem. This vulnerability could even lead to a kernel information leak problem.

CVSS 3.1 · 6.3 Medium EPSS < 1% KEV · Not listed
Vendors
Debian Linux Redhat
Products
Debian Linux Linux Kernel Enterprise Linux and 2 more
CVE-2023-2166

kernel: NULL pointer dereference in can_rcv_filter

A null pointer dereference issue was found in can protocol in net/can/af_can.c in the Linux before Linux. ml_priv may not be initialized in the receive path of CAN frames. A local user could use this flaw to crash the system or potentially cause a denial of service.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
Linux Redhat
Products
Linux Kernel Enterprise Linux Rhel Aus and 4 more
CVE-2022-33196

kernel: Intel firmware update for Incorrect default permissions in some memory controller configurations

Incorrect default permissions in some memory controller configurations for some Intel(R) Xeon(R) Processors when using Intel(R) Software Guard Extensions which may allow a privileged user to potentially enable escalation of privilege via local access.

CVSS 3.1 · 7.2 High EPSS < 1% KEV · Not listed
Vendors
Intel Redhat
Products
Xeon D-1513n Xeon D-1513n Firmware Xeon D-1518 and 271 more
CVE-2023-3006

RHEL: Add Spectre-BHB mitigation for AmpereOne

A known cache speculation vulnerability, known as Branch History Injection (BHI) or Spectre-BHB, becomes actual again for the new hw AmpereOne. Spectre-BHB is similar to Spectre v2, except that malicious code uses the shared branch history (stored in the CPU Branch History Buffer, or BHB) to influence mispredicted branches within the victim's hardware context. Once that occurs, speculation caused by the mispredicted branches can cause cache allocation. This issue leads to obtaining information that should not be accessible.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
Linux Redhat
Products
Linux Kernel Rhel Eus Rhev Hypervisor
CVE-2023-51043

kernel: use-after-free during a race condition between a nonblocking atomic commit and a driver unload in drivers/gpu/drm/drm_atomic.c

In the Linux kernel before 6.4.5, drivers/gpu/drm/drm_atomic.c has a use-after-free during a race condition between a nonblocking atomic commit and a driver unload.

CVSS 3.1 · 7.0 High EPSS < 1% KEV · Not listed
Vendors
Linux Redhat
Products
Linux Kernel Enterprise Linux Rhel Eus and 1 more