kernel: efivarfs: force RO when remounting if SetVariable is not supported

A flaw was found in the Linux kernel, which involves the improper handling of the efivarfs filesystem when the firmware does not support the SetVariable function at runtime. Specifically, even if efivarfs is initially mounted as read-only RO, it can be remounted as read-write RW without checking ...

DEBIAN-CVE-2024-43896

In the Linux kernel, the following vulnerability has been resolved: ASoC: cs-amp-lib: Fix NULL pointer crash if efi.getvariable is NULL Call efirtservicessupported to check that efi.getvariable exists before calling it...

UBUNTU-CVE-2024-43896

In the Linux kernel, the following vulnerability has been resolved: ASoC: cs-amp-lib: Fix NULL pointer crash if efi.getvariable is NULL Call efirtservicessupported to check that efi.getvariable exists before calling it...

SUSE CVE-2022-48879

In the Linux kernel, the following vulnerability has been resolved: efi: fix NULL-deref in init error path In cases where runtime services are not supported or have been disabled, the runtime services workqueue will never have been allocated. Do not try to destroy the workqueue unconditionally in...

SUSE CVE-2023-52893

In the Linux kernel, the following vulnerability has been resolved: gsmi: fix null-deref in gsmigetvariable We can get EFI variables without fetching the attribute, so we must allow for that in gsmi. commit 859748255b43 "efi: pstore: Omit efivars caching EFI varstore access layer" added a new...

CVE-2022-48879

In the Linux kernel, the following vulnerability has been resolved: efi: fix NULL-deref in init error path In cases where runtime services are not supported or have been disabled, the runtime services workqueue will never have been allocated. Do not try to destroy the workqueue unconditionally in...

RLSA-2024:5101 Important: kernel security update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: powerpc: Fix access beyond end of drmem array CVE-2023-52451 kernel: efivarfs: force RO when remounting if SetVariable is not supported CVE-2023-52463 kernel: tracing: Restructure...

kernel security update

An update is available for kernel. This update affects Rocky Linux 8. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list The kernel packages contain the Linux kernel, the core of any Linux operating...

CVE-2022-48879

In the Linux kernel, the following vulnerability has been resolved: efi: fix NULL-deref in init error path In cases where runtime services are not supported or have been disabled, the runtime services workqueue will never have been allocated. Do not try to destroy the workqueue unconditionally in...

CVE-2022-48879

In the Linux kernel, the following vulnerability has been resolved: efi: fix NULL-deref in init error path In cases where runtime services are not supported or have been disabled, the runtime services workqueue will never have been allocated. Do not try to destroy the workqueue unconditionally in...

CVE-2023-52893 gsmi: fix null-deref in gsmi_get_variable

In the Linux kernel, the following vulnerability has been resolved: gsmi: fix null-deref in gsmigetvariable We can get EFI variables without fetching the attribute, so we must allow for that in gsmi. commit 859748255b43 "efi: pstore: Omit efivars caching EFI varstore access layer" added a new...

CVE-2023-52893

Summary: CVE-2023-52893 is a Linux kernel vulnerability where a call path using get_variable with a NULL attr triggers a null-deref/panic in the gsmi subsystem. Root cause: The patch accompanying the EFI varstore change (efi: pstore: Omit efivars caching EFI varstore access layer) added a new get...

CVE-2023-52893 gsmi: fix null-deref in gsmi_get_variable

In the Linux kernel, the following vulnerability has been resolved: gsmi: fix null-deref in gsmigetvariable We can get EFI variables without fetching the attribute, so we must allow for that in gsmi. commit 859748255b43 "efi: pstore: Omit efivars caching EFI varstore access layer" added a new...

CVE-2023-52893

In the Linux kernel, the following vulnerability has been resolved: gsmi: fix null-deref in gsmigetvariable We can get EFI variables without fetching the attribute, so we must allow for that in gsmi. commit 859748255b43 "efi: pstore: Omit efivars caching EFI varstore access layer" added a new...

CVE-2022-48879

CVE-2022-48879 concerns a Linux kernel vulnerability within the EFI/Runtime Services path. The issue arises when runtime services are not supported or disabled, causing the runtime services workqueue to never be allocated, which could lead to a NULL pointer dereference if the code attempts to des...

CVE-2022-48879 efi: fix NULL-deref in init error path

In the Linux kernel, the following vulnerability has been resolved: efi: fix NULL-deref in init error path In cases where runtime services are not supported or have been disabled, the runtime services workqueue will never have been allocated. Do not try to destroy the workqueue unconditionally in...

CVE-2022-48879 efi: fix NULL-deref in init error path

In the Linux kernel, the following vulnerability has been resolved: efi: fix NULL-deref in init error path In cases where runtime services are not supported or have been disabled, the runtime services workqueue will never have been allocated. Do not try to destroy the workqueue unconditionally in...

CVE-2022-48879 efi: fix NULL-deref in init error path

In the Linux kernel, the following vulnerability has been resolved: efi: fix NULL-deref in init error path In cases where runtime services are not supported or have been disabled, the runtime services workqueue will never have been allocated. Do not try to destroy the workqueue unconditionally in...

CVE-2022-48879

In the Linux kernel, the following vulnerability has been resolved: efi: fix NULL-deref in init error path In cases where runtime services are not supported or have been disabled, the runtime services workqueue will never have been allocated. Do not try to destroy the workqueue unconditionally in...

kernel: efivarfs: force RO when remounting if SetVariable is not supported

A flaw was found in the Linux kernel, which involves the improper handling of the efivarfs filesystem when the firmware does not support the SetVariable function at runtime. Specifically, even if efivarfs is initially mounted as read-only RO, it can be remounted as read-write RW without checking ...