CVE-2024-26646 — thermal: intel: hfi: Add syscore callbacks for system-wide PM

Affected: Linux

In the Linux kernel, the following vulnerability has been resolved:

thermal: intel: hfi: Add syscore callbacks for system-wide PM

The kernel allocates a memory buffer and provides its location to the hardware, which uses it to update the HFI table. This allocation occurs during boot and remains constant throughout runtime.

When resuming from hibernation, the restore kernel allocates a second memory buffer and reprograms the HFI hardware with the new location as part of a normal boot. The location of the second memory buffer may differ from the one allocated by the image kernel.

When the restore kernel transfers control to the image kernel, its HFI buffer becomes invalid, potentially leading to memory corruption if the hardware writes to it (the hardware continues to use the buffer from the restore kernel).

It is also possible that the hardware "forgets" the address of the memory buffer when resuming from "deep" suspend. Memory corruption may also occur in such a scenario.

To prevent the described memory corruption, disable HFI when preparing to suspend or hibernate. Enable it when resuming.

Add syscore callbacks to handle the package of the boot CPU (packages of non-boot CPUs are handled via CPU offline). Syscore ops always run on the boot CPU. Additionally, HFI only needs to be disabled during "deep" suspend and hibernation. Syscore ops only run in these cases.

[ rjw: Comment adjustment, subject and changelog edits ]

USN-6818-1 — linux, linux-gcp, linux-gcp-6.5, linux-lowlatency, linux-lowlatency-hwe-6.5, linux-raspi vulnerabilities

Affected: Ubuntu:22.04:LTS: linux-gcp-6.5, Ubuntu:22.04:LTS: linux-lowlatency-hwe-6.5

Alon Zahavi discovered that the NVMe-oF/TCP subsystem in the Linux kernel did not properly validate H2C PDU data, leading to a null pointer dereference vulnerability. A remote attacker could use this to cause a denial of service (system crash). (CVE-2023-6356, CVE-2023-6535, CVE-2023-6536)

It was discovered that the Intel Data Streaming and Intel Analytics Accelerator drivers in the Linux kernel allowed direct access to the devices for unprivileged users and virtual machines. A local attacker could use this to cause a denial of service. (CVE-2024-21823)

Chenyuan Yang discovered that the RDS Protocol implementation in the Linux kernel contained an out-of-bounds read vulnerability. An attacker could use this to possibly cause a denial of service (system crash). (CVE-2024-23849)

It was discovered that a race condition existed in the Bluetooth subsystem in the Linux kernel, leading to a null pointer dereference vulnerability. A privileged local attacker could use this to possibly cause a denial of service (system crash). (CVE-2024-24860)

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - PowerPC architecture; - RISC-V architecture; - S390 architecture; - Core kernel; - x86 architecture; - Block layer subsystem; - Cryptographic API; - ACPI drivers; - Android drivers; - Drivers core; - Power management…

Most recent entries from all

CVE-2024-26646 — thermal: intel: hfi: Add syscore callbacks for system-wide PM

USN-6818-1 — linux, linux-gcp, linux-gcp-6.5, linux-lowlatency, linux-lowlatency-hwe-6.5, linux-raspi vulnerabilities