PT-2024-34113

Name of the Vulnerable Software and Affected Versions: Linux kernel affected versions not specified Description: A spectre-related vulnerability has been identified in the Linux kernel, specifically in the media: av7110 component. The issue was detected by smatch, a static analysis tool, which...

CVE-2024-46774 powerpc/rtas: Prevent Spectre v1 gadget construction in sys_rtas()

In the Linux kernel, the following vulnerability has been resolved: powerpc/rtas: Prevent Spectre v1 gadget construction in sysrtas Smatch warns: arch/powerpc/kernel/rtas.c:1932 dosysrtas warn: potential spectre issue 'args.args' r local cap The 'nargs' and 'nret' locals come directly from a...

hw: cpu: intel: Native Branch History Injection (BHI)

A flaw was found in some Intel CPUs where mitigations for the Spectre V2/BHI vulnerability were incomplete. This issue may allow an attacker to read arbitrary memory, compromising system integrity and exposing sensitive information...

hw: cpu: intel: Native Branch History Injection (BHI)

A flaw was found in some Intel CPUs where mitigations for the Spectre V2/BHI vulnerability were incomplete. This issue may allow an attacker to read arbitrary memory, compromising system integrity and exposing sensitive information...

DEBIAN-CVE-2022-48730

In the Linux kernel, the following vulnerability has been resolved: dma-buf: heaps: Fix potential spectre v1 gadget It appears like nr could be a Spectre v1 gadget as it's supplied by a user and used as an array index. Prevent the contents of kernel memory from being leaked to userspace via...

Medium: kernel

Issue Overview: A Speculative Race Condition SRC vulnerability that impacts modern CPU architectures supporting speculative execution related to Spectre V1 has been disclosed. An unauthenticated attacker can exploit this vulnerability to disclose arbitrary data from the CPU using race conditions ...

MTE As Implemented, Part 3: The Kernel

By Mark Brand, Project Zero Background In 2018, in the v8.5a version of the ARM architecture, ARM proposed a hardware implementation of tagged memory, referred to as MTE Memory Tagging Extensions. In Part 1 we discussed testing the technical and implementation limitations of MTE on the hardware...

MTE As Implemented, Part 2: Mitigation Case Studies

By Mark Brand, Project Zero Background In 2018, in the v8.5a version of the ARM architecture, ARM proposed a hardware implementation of tagged memory, referred to as MTE Memory Tagging Extensions. In Part 1 we discussed testing the technical and implementation limitations of MTE on the hardware...

CVE-2023-3006

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 influenc...

kernel: KVM: nVMX: missing IBPB when exiting from nested guest can lead to Spectre v2 attacks

A flaw was found in the KVM's Intel nested virtualization feature nVMX. Since L1 and L2 shared branch prediction modes guest-user and guest-kernel, KVM did not protect indirect branches in L1 from steering by a malicious agent in L2. This could allow a malicious nested guest to carry out Spectre ...

DEBIAN-CVE-2023-1998

The Linux kernel allows userspace processes to enable mitigations by calling prctl with PRSETSPECULATIONCTRL 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...

SUSE-SU-2023:1894-1 Security update for the Linux Kernel

The SUSE Linux Enterprise 12 SP5 kernel was updated to receive various security and bugfixes. The following security bugs were fixed: - CVE-2023-1611: Fixed an use-after-free flaw in btrfssearchslot bsc1209687. - CVE-2020-36691: Fixed an issue which could allow attackers to cause a denial of...

GSD-2023-1002339 xfrm/compat: prevent potential spectre v1 gadget in xfrm_xlate32_attr()

xfrm/compat: prevent potential spectre v1 gadget in xfrmxlate32attr This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v6.1.12 by commit...

PT-2023-35466 · Linux · Linux Kernel

Name of the Vulnerable Software and Affected Versions: Linux Kernel versions prior to v5.10.168 Description: The issue concerns a potential Spectre v1 gadget in the xfrm xlate32 attr function. The actual impact and attack plausibility have not yet been proven. Recommendations: For Linux Kernel...

SUSE CVE-2022-23960

Certain Arm Cortex and Neoverse processors through 2022-03-08 do not properly restrict cache speculation, aka Spectre-BHB. An attacker can leverage the shared branch history in the Branch History Buffer BHB to influence mispredicted branches. Then, cache allocation can allow the attacker to obtai...

PT-2023-34977 · Linux · Linux Kernel

Name of the Vulnerable Software and Affected Versions: Linux Kernel versions prior to v6.1.9 Description: The issue concerns a potential Spectre v1 gadget in the ip metrics convert function. This could potentially be exploited, although the actual impact and attack plausibility have not yet been...

PT-2023-34976 · Linux · Linux Kernel

Name of the Vulnerable Software and Affected Versions: Linux Kernel versions prior to v6.1.9 Description: The issue concerns a potential Spectre v1 gadget in the fib metrics match function. The actual impact and attack plausibility have not yet been proven. Recommendations: For Linux Kernel...

OESA-2023-1036 kernel security update

The Linux Kernel, the operating system core itself. Security Fixes: An out-of-bounds memory access flaw was found in the Linux kernel Intel’s iSMT SMBus host controller driver in the way a user triggers the I2CSMBUSBLOCKDATA with the ioctl I2CSMBUS with malicious input data. This flaw allows a...

CVE-2022-2196

A regression exists in the Linux Kernel within KVM: nVMX that allowed for speculative execution attacks. L2 can carry out Spectre v2 attacks on L1 due to L1 thinking it doesn't need retpolines or IBPB after running L2 due to KVM L0 advertising eIBRS support to L1. An attacker at L2 with code...

DEBIAN-CVE-2022-33745

insufficient TLB flush for x86 PV guests in shadow mode For migration as well as to work around kernels unaware of L1TF see XSA-273, PV guests may be run in shadow paging mode. To address XSA-401, code was moved inside a function in Xen. This code movement missed a variable changing meaning / val...