kernel: protect the fetch of ->fd[fd] in do_dup2() from mispredictions

In the Linux kernel, the following vulnerability has been resolved: protect the fetch of -fdfd in dodup2 from mispredictions both callers have verified that fd is not greater than -maxfds; however, misprediction might end up with tofree = fdt-fdfd; being speculatively executed. That's wrong for t...

SUSE CVE-2024-46774

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...

CVE-2024-46774

CVE-2024-46774 affects the Linux kernel PowerPC RTAS path (sys_rtas). The issue arises in powerpc/rtas.c where nargs/nret come from a user buffer and are used as indices into a small stack array and as inputs to copy_to_user after bounds checks, allowing speculative execution (Spectre v1) gadget ...

DEBIAN-CVE-2024-44931

In the Linux kernel, the following vulnerability has been resolved: gpio: prevent potential speculation leaks in gpiodevicegetdesc Userspace may trigger a speculative read of an address outside the gpio descriptor array. Users can do that by calling gpioioctl with an offset out of range. Offset i...

UBUNTU-CVE-2024-44931

In the Linux kernel, the following vulnerability has been resolved: gpio: prevent potential speculation leaks in gpiodevicegetdesc Userspace may trigger a speculative read of an address outside the gpio descriptor array. Users can do that by calling gpioioctl with an offset out of range. Offset i...

CVE-2024-42265

In the Linux kernel, the following vulnerability has been resolved: protect the fetch of -fdfd in dodup2 from mispredictions both callers have verified that fd is not greater than -maxfds; however, misprediction might end up with tofree = fdt-fdfd; being speculatively executed. That's wrong for t...

DEBIAN-CVE-2024-42265

In the Linux kernel, the following vulnerability has been resolved: protect the fetch of -fdfd in dodup2 from mispredictions both callers have verified that fd is not greater than -maxfds; however, misprediction might end up with tofree = fdt-fdfd; being speculatively executed. That's wrong for t...

UBUNTU-CVE-2024-42265

In the Linux kernel, the following vulnerability has been resolved: protect the fetch of -fdfd in dodup2 from mispredictions both callers have verified that fd is not greater than -maxfds; however, misprediction might end up with tofree = fdt-fdfd; being speculatively executed. That's wrong for t...

CVE-2024-42265 protect the fetch of ->fd[fd] in do_dup2() from mispredictions

In the Linux kernel, the following vulnerability has been resolved: protect the fetch of -fdfd in dodup2 from mispredictions both callers have verified that fd is not greater than -maxfds; however, misprediction might end up with tofree = fdt-fdfd; being speculatively executed. That's wrong for t...

amd: Return Address Predictor vulnerability leading to information disclosure

A side channel vulnerability was found in hw amd. Some AMD CPUs may allow an attacker to influence the return address prediction. This issue may result in speculative execution at an attacker-controlled instruction pointer register, potentially leading to information disclosure...

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...

CVE-2022-48730 dma-buf: heaps: Fix potential spectre v1 gadget

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...

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...

CVE-2023-52874

In the Linux kernel, the following vulnerability has been resolved: x86/tdx: Zero out the missing RSI in TDXHYPERCALL macro In the TDXHYPERCALL asm, after the TDCALL instruction returns from the untrusted VMM, the registers that the TDX guest shares to the VMM need to be cleared to avoid...

SUSE CVE-2021-47277

In the Linux kernel, the following vulnerability has been resolved: kvm: avoid speculation-based attacks from out-of-range memslot accesses KVM's mechanism for accessing guest memory translates a guest physical address gpa to a host virtual address using the right-shifted gpa also known as gfn an...

SUSE CVE-2023-52874

In the Linux kernel, the following vulnerability has been resolved: x86/tdx: Zero out the missing RSI in TDXHYPERCALL macro In the TDXHYPERCALL asm, after the TDCALL instruction returns from the untrusted VMM, the registers that the TDX guest shares to the VMM need to be cleared to avoid...

CVE-2023-52874

In the Linux kernel, the following vulnerability has been resolved: x86/tdx: Zero out the missing RSI in TDXHYPERCALL macro In the TDXHYPERCALL asm, after the TDCALL instruction returns from the untrusted VMM, the registers that the TDX guest shares to the VMM need to be cleared to avoid...

UBUNTU-CVE-2023-52874

In the Linux kernel, the following vulnerability has been resolved: x86/tdx: Zero out the missing RSI in TDXHYPERCALL macro In the TDXHYPERCALL asm, after the TDCALL instruction returns from the untrusted VMM, the registers that the TDX guest shares to the VMM need to be cleared to avoid...

CVE-2023-52874 x86/tdx: Zero out the missing RSI in TDX_HYPERCALL macro

In the Linux kernel, the following vulnerability has been resolved: x86/tdx: Zero out the missing RSI in TDXHYPERCALL macro In the TDXHYPERCALL asm, after the TDCALL instruction returns from the untrusted VMM, the registers that the TDX guest shares to the VMM need to be cleared to avoid...

CVE-2023-52874

CVE-2023-52874 (Linux kernel, x86/tdx): the vulnerability stems from an omission in the TDX_HYPERCALL path where RSI was not cleared when returning from TDCALL, risking speculation of VMM-provided values after the guest legally shares registers with the untrusted VMM. The issue originates from a ...