UBUNTU-CVE-2024-46852

In the Linux kernel, the following vulnerability has been resolved: dma-buf: heaps: Fix off-by-one in CMA heap fault handler Until VMDONTEXPAND was added in commit 1c1914d6e8c6 "dma-buf: heaps: Don't track CMA dma-buf pages under RssFile" it was possible to obtain a mapping larger than the buffer...

CVE-2024-46852 dma-buf: heaps: Fix off-by-one in CMA heap fault handler

In the Linux kernel, the following vulnerability has been resolved: dma-buf: heaps: Fix off-by-one in CMA heap fault handler Until VMDONTEXPAND was added in commit 1c1914d6e8c6 "dma-buf: heaps: Don't track CMA dma-buf pages under RssFile" it was possible to obtain a mapping larger than the buffer...

CVE-2024-46852

CVE-2024-46852 — Linux kernel CMA heap off-by-one fix : The issue occurred when a mapping larger than the buffer size could be created via mremap, allowing an overflow bypass in dma_buf_mmap_internal. The CMA heap fault handler incorrectly bound the fault offset by 1 when validating the end of th...

CVE-2024-46852 dma-buf: heaps: Fix off-by-one in CMA heap fault handler

In the Linux kernel, the following vulnerability has been resolved: dma-buf: heaps: Fix off-by-one in CMA heap fault handler Until VMDONTEXPAND was added in commit 1c1914d6e8c6 "dma-buf: heaps: Don't track CMA dma-buf pages under RssFile" it was possible to obtain a mapping larger than the buffer...

CVE-2024-46852 dma-buf: heaps: Fix off-by-one in CMA heap fault handler

In the Linux kernel, the following vulnerability has been resolved: dma-buf: heaps: Fix off-by-one in CMA heap fault handler Until VMDONTEXPAND was added in commit 1c1914d6e8c6 "dma-buf: heaps: Don't track CMA dma-buf pages under RssFile" it was possible to obtain a mapping larger than the buffer...

CVE-2024-46852: Off-by-one Error

In the Linux kernel, the following vulnerability has been resolved: dma-buf: heaps: Fix off-by-one in CMA heap fault handler Until VMDONTEXPAND was added in commit 1c1914d6e8c6 "dma-buf: heaps: Don't track CMA dma-buf pages under RssFile" it was possible to obtain a mapping larger than the buffer...

Direct Memory Access (DMA) attacks. Risks, techniques, and mitigations in hardware hacking

TL;DR Direct Memory Access DMA attacks are a powerful class of attack that give read and write access to the memory of a target system, bypassing the main CPU to gain kernel privileges. We became interested in DMA attacks for expanding the toolkit for rooting embedded devices. A lot of embedded...

Ubuntu 20.04 LTS : Linux kernel vulnerabilities (USN-7009-2)

The remote Ubuntu 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7009-2 advisory. Chenyuan Yang discovered that the CEC driver driver in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to caus...

AlmaLinux 8 : virt:rhel and virt-devel:rhel (ALSA-2024:6964)

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2024:6964 advisory. QEMU: virtio: DMA reentrancy issue leads to double free vulnerability CVE-2024-3446 QEMU: Denial of Service via Improper Synchronization in QEMU NBD Serve...

QEMU: virtio: DMA reentrancy issue leads to double free vulnerability

A double free vulnerability was found in QEMU virtio devices virtio-gpu, virtio-serial-bus, virtio-crypto, where the memreentrancyguard flag insufficiently protects against DMA reentrancy issues. This issue could allow a malicious privileged guest user to crash the QEMU process on the host,...

kernel: dmaengine: idxd: Fix oops during rmmod on single-CPU platforms

This is a vulnerability in the Linux kernel's Data Movement Accelerator DMA engine, specifically affecting the Intel Data Streaming Accelerator IDXD driver. The issue arises during the removal rmmod of the idxd driver on systems with only one active CPU. In such scenarios, the driver's cleanup...

kernel: drm/amdgpu: add error handle to avoid out-of-bounds

A flaw was found in the Linux kernel's drm/amdgpu component. This vulnerability, caused by an out-of-bounds read in the sdmav40irqidtoseq function, could allow a local attacker to read sensitive information from kernel memory. This could lead to information disclosure or a denial of service DoS d...

Ubuntu 20.04 LTS : Linux kernel vulnerabilities (USN-7007-2)

The remote Ubuntu 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7007-2 advisory. Chenyuan Yang discovered that the CEC driver driver in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to caus...

Ubuntu 24.04 LTS : Linux kernel vulnerabilities (USN-6999-2)

The remote Ubuntu 24.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6999-2 advisory. Chenyuan Yang discovered that the CEC driver driver in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to caus...

Ubuntu 22.04 LTS : Linux kernel vulnerabilities (USN-7029-1)

"The remote Ubuntu 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7029-1 advisory. Chenyuan Yang discovered that the CEC driver driver in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to cau...

Ubuntu 20.04 LTS / 22.04 LTS : Linux kernel vulnerabilities (USN-7007-3)

The remote Ubuntu 20.04 LTS / 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7007-3 advisory. Chenyuan Yang discovered that the CEC driver driver in the Linux kernel contained a use-after-free vulnerability. A local attacker could use...

AZL-60151 CVE-2024-8612 affecting package qemu 6.2.0-26

A flaw was found in QEMU, in the virtio-scsi, virtio-blk, and virtio-crypto devices. The size for virtqueuepush as set in virtioscsicompletereq / virtioblkreqcomplete / viritocryptoreqcomplete could be larger than the true size of the data which has been sent to guest. Once virtqueuepush finally...

AZL-60910 CVE-2024-8612 affecting package qemu for versions less than 9.1.0-1

A flaw was found in QEMU, in the virtio-scsi, virtio-blk, and virtio-crypto devices. The size for virtqueuepush as set in virtioscsicompletereq / virtioblkreqcomplete / viritocryptoreqcomplete could be larger than the true size of the data which has been sent to guest. Once virtqueuepush finally...

UBUNTU-CVE-2024-8612

A flaw was found in QEMU, in the virtio-scsi, virtio-blk, and virtio-crypto devices. The size for virtqueuepush as set in virtioscsicompletereq / virtioblkreqcomplete / viritocryptoreqcomplete could be larger than the true size of the data which has been sent to guest. Once virtqueuepush finally...

CVE-2024-8612

A flaw was found in QEMU, in the virtio-scsi, virtio-blk, and virtio-crypto devices. The size for virtqueuepush as set in virtioscsicompletereq / virtioblkreqcomplete / viritocryptoreqcomplete could be larger than the true size of the data which has been sent to guest. Once virtqueuepush finally...