CVE-2026-31648

Summary of CVE-2026-31648 (Linux kernel) • Affects the kernel vulnerability in filemap handling: nr_pages overflow in filemap_map_pages() can cause set_pte_range() to map beyond the size of a large folio, potentially corrupting page metadata. • Root cause (as documented): race condition between f...

CVE-2026-31648

In the Linux kernel, the following vulnerability has been resolved: mm: filemap: fix nrpages calculation overflow in filemapmappages When running stress-ng on my Arm64 machine with v7.0-rc3 kernel, I encountered some very strange crash issues showing up as "Bad page state": " 734.496287 BUG: Bad...

EUVD-2026-25522

In the Linux kernel, the following vulnerability has been resolved: nfc: llcp: add missing return after LLCPCLOSED checks In nfcllcprecvhdlc and nfcllcprecvdisc, when the socket state is LLCPCLOSED, the code correctly calls releasesock and nfcllcpsockput but fails to return. Execution falls throu...

CVE-2026-31593 KVM: SEV: Reject attempts to sync VMSA of an already-launched/encrypted vCPU

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Reject attempts to sync VMSA of an already-launched/encrypted vCPU Reject synchronizing vCPU state to its associated VMSA if the vCPU has already been launched, i.e. if the VMSA has already been encrypted. On a host wit...

CVE-2026-31593

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Reject attempts to sync VMSA of an already-launched/encrypted vCPU Reject synchronizing vCPU state to its associated VMSA if the vCPU has already been launched, i.e. if the VMSA has already been encrypted. On a host wit...

CVE-2026-31593

CVE-2026-31593 is a Linux kernel KVM SEV SNP issue. The vulnerability arises when updating an already-launched and encrypted vCPU state: attempting to sync the vCPU's VMSA can trigger an SEV-SNP cryptographic memory protection (RMP) violation, causing a host panic/DoS. Technical details across mu...

CVE-2026-31593

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Reject attempts to sync VMSA of an already-launched/encrypted vCPU Reject synchronizing vCPU state to its associated VMSA if the vCPU has already been launched, i.e. if the VMSA has already been encrypted. On a host wit...

CVE-2026-31591

The CVE-2026-31591 entry details a Linux kernel KVM SNP/VMSA issue where vCPU state synchronization and encryption during SNP launch could be interfered with by userspace, risking vCPU state corruption or host kernel crashes. The root cause is insufficient locking around vcpu->mutex during VMS...

CVE-2026-31591

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Lock all vCPUs when synchronzing VMSAs for SNP launch finish Lock all vCPUs when synchronizing and encrypting VMSAs for SNP guests, as allowing userspace to manipulate and/or run a vCPU while its state is being...

CVE-2026-31591 KVM: SEV: Lock all vCPUs when synchronzing VMSAs for SNP launch finish

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Lock all vCPUs when synchronzing VMSAs for SNP launch finish Lock all vCPUs when synchronizing and encrypting VMSAs for SNP guests, as allowing userspace to manipulate and/or run a vCPU while its state is being...

CVE-2026-31591 KVM: SEV: Lock all vCPUs when synchronzing VMSAs for SNP launch finish

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Lock all vCPUs when synchronzing VMSAs for SNP launch finish Lock all vCPUs when synchronizing and encrypting VMSAs for SNP guests, as allowing userspace to manipulate and/or run a vCPU while its state is being...

CVE-2026-31591

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Lock all vCPUs when synchronzing VMSAs for SNP launch finish Lock all vCPUs when synchronizing and encrypting VMSAs for SNP guests, as allowing userspace to manipulate and/or run a vCPU while its state is being...

EUVD-2026-25484

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Lock all vCPUs when synchronzing VMSAs for SNP launch finish Lock all vCPUs when synchronizing and encrypting VMSAs for SNP guests, as allowing userspace to manipulate and/or run a vCPU while its state is being...

CVE-2026-31585

In the Linux kernel, the following vulnerability has been resolved: media: vidtv: fix nfeeds state corruption on startstreaming failure syzbot reported a memory leak in vidtvpsiservicedescinit 1. When vidtvstartstreaming fails inside vidtvstartfeed, the nfeeds counter is left incremented even...

CVE-2026-31585

In the Linux kernel, the following vulnerability has been resolved: media: vidtv: fix nfeeds state corruption on startstreaming failure syzbot reported a memory leak in vidtvpsiservicedescinit 1. When vidtvstartstreaming fails inside vidtvstartfeed, the nfeeds counter is left incremented even...

EUVD-2026-25478

In the Linux kernel, the following vulnerability has been resolved: media: vidtv: fix nfeeds state corruption on startstreaming failure syzbot reported a memory leak in vidtvpsiservicedescinit 1. When vidtvstartstreaming fails inside vidtvstartfeed, the nfeeds counter is left incremented even...

CVE-2026-31585

CVE-2026-31585 affects the Linux kernel vidtv media driver. When vidtv_start_streaming() fails inside vidtv_start_feed(), the nfeeds counter is not decremented, leaving the number of active feeds inconsistent with actual starts. This state corruption can cause subsequent start_feed calls to skip ...

CVE-2026-31585 media: vidtv: fix nfeeds state corruption on start_streaming failure

In the Linux kernel, the following vulnerability has been resolved: media: vidtv: fix nfeeds state corruption on startstreaming failure syzbot reported a memory leak in vidtvpsiservicedescinit 1. When vidtvstartstreaming fails inside vidtvstartfeed, the nfeeds counter is left incremented even...

CVE-2026-31582

CVE-2026-31582 affects the Linux kernel hwmon powerz driver. A use-after-free occurs when a USB disconnect frees the URB and mutex, and a subsequent powerz_read() can dereference the freed URB in powerz_read_data(). The fix, as described across sources, is to set priv->urb to NULL in powerz_di...

CVE-2026-31574 clockevents: Add missing resets of the next_event_forced flag

In the Linux kernel, the following vulnerability has been resolved: clockevents: Add missing resets of the nexteventforced flag The prevention mechanism against timer interrupt starvation missed to reset the nexteventforced flag in a couple of places: - When the clock event state changes. That ca...