123 matches found
CVE-2026-68166
The CVE-2026-68166 issue in the Linux kernel is addressed by restricting userfaultfd registrations. The fix updates vma_can_userfault() to reject VM_SHADOW_STACK and VM_SPECIAL so that drivers implementing vm_uffd_ops cannot register special VMAs with userfaultfd. VM_SPECIAL’s inclusion of VM_DON...
CVE-2026-68166 userfaultfd: prevent registration of special VMAs
In the Linux kernel, the following vulnerability has been resolved: userfaultfd: prevent registration of special VMAs Vova Tokarev says: userfaultfd allows registration on shadow stack VMAs. With userfaultfd access, you can register on the shadow stack, discard a page ... and inject a page with...
CVE-2026-68166 userfaultfd: prevent registration of special VMAs
In the Linux kernel, the following vulnerability has been resolved: userfaultfd: prevent registration of special VMAs Vova Tokarev says: userfaultfd allows registration on shadow stack VMAs. With userfaultfd access, you can register on the shadow stack, discard a page ... and inject a page with...
PT-2026-69566
Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the userfaultfd mechanism that allows the registration of special Virtual Memory Areas VMAs. Specifically, it permits registration on shadow stack VMAs, which could...
Linux Distros Unpatched Vulnerability : CVE-2026-68166
The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - userfaultfd: prevent registration of special VMAs Vova Tokarev says: userfaultfd allows registration on shadow stack VMAs. With userfaultfd access, you can...
Astra Linux – Vulnerability in Linux 5.10
In the Linux kernel, the following vulnerability has been resolved: x86/shstk: Prevent deadlock during shstk sigreturn During sigreturn, the shadow stack signal frame is popped. The kernel does this by reading the shadow stack using normal read accesses. When it cannot assume that the memory is t...
Astra Linux – Vulnerability in Linux 5.10
In the Linux kernel, the following vulnerability has been resolved: arm64/gcs: Error handling in archsetshadowstackstatus has been fixed. allocgcs returns an error-encoded pointer if it fails; this issue originates from dommap, not from NULL. The current check for NULL fails to detect errors, whi...
Linux Distros Unpatched Vulnerability : CVE-2026-45876
The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - arm64/gcs: Fix error handling in archsetshadowstackstatus allocgcs returns an error-encoded pointer on failure, which comes from dommap, not NULL. The current...
SUSE CVE-2026-45876
In the Linux kernel, the following vulnerability has been resolved: arm64/gcs: Fix error handling in archsetshadowstackstatus allocgcs returns an error-encoded pointer on failure, which comes from dommap, not NULL. The current NULL check fails to detect errors, which could lead to using an invali...
SUSE CVE-2026-46063
In the Linux kernel, the following vulnerability has been resolved: x86/shstk: Prevent deadlock during shstk sigreturn During sigreturn the shadow stack signal frame is popped. The kernel does this by reading the shadow stack using normal read accesses. When it can't assume the memory is shadow...
CVE-2026-45876
A flaw was found in the Linux kernel. Improper error handling in the archsetshadowstackstatus function, specifically related to allocgcs, could lead to the use of an invalid Global Context Structure GCS address. This issue may allow a local attacker to cause system instability or a denial of...
Linux Distros Unpatched Vulnerability : CVE-2026-46063
The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - x86/shstk: Prevent deadlock during shstk sigreturn During sigreturn the shadow stack signal frame is popped. The kernel does this by reading the shadow stack...
CVE-2026-46063
A flaw was found in the Linux kernel. A deadlock can occur during the shadow stack signal return shstk sigreturn process on x86 systems. This happens when the kernel attempts to read the shadow stack signal frame, and a page fault occurs, leading to a recursive attempt to acquire an mmap read loc...
EUVD-2026-32342
In the Linux kernel, the following vulnerability has been resolved: arm64/gcs: Fix error handling in archsetshadowstackstatus allocgcs returns an error-encoded pointer on failure, which comes from dommap, not NULL. The current NULL check fails to detect errors, which could lead to using an invali...
CVE-2026-46063
In the Linux kernel, the following vulnerability has been resolved: x86/shstk: Prevent deadlock during shstk sigreturn During sigreturn the shadow stack signal frame is popped. The kernel does this by reading the shadow stack using normal read accesses. When it can't assume the memory is shadow...
AZL-88533 CVE-2026-46063 affecting package kernel for versions less than 6.6.141.1-1
In the Linux kernel, the following vulnerability has been resolved: x86/shstk: Prevent deadlock during shstk sigreturn During sigreturn the shadow stack signal frame is popped. The kernel does this by reading the shadow stack using normal read accesses. When it can't assume the memory is shadow...
CVE-2026-45876
In the Linux kernel, the following vulnerability has been resolved: arm64/gcs: Fix error handling in archsetshadowstackstatus allocgcs returns an error-encoded pointer on failure, which comes from dommap, not NULL. The current NULL check fails to detect errors, which could lead to using an invali...
UBUNTU-CVE-2026-46063
In the Linux kernel, the following vulnerability has been resolved: x86/shstk: Prevent deadlock during shstk sigreturn During sigreturn the shadow stack signal frame is popped. The kernel does this by reading the shadow stack using normal read accesses. When it can't assume the memory is shadow...
UBUNTU-CVE-2026-45876
In the Linux kernel, the following vulnerability has been resolved: arm64/gcs: Fix error handling in archsetshadowstackstatus allocgcs returns an error-encoded pointer on failure, which comes from dommap, not NULL. The current NULL check fails to detect errors, which could lead to using an invali...
EUVD-2026-32445
In the Linux kernel, the following vulnerability has been resolved: x86/shstk: Prevent deadlock during shstk sigreturn During sigreturn the shadow stack signal frame is popped. The kernel does this by reading the shadow stack using normal read accesses. When it can't assume the memory is shadow...