CVE-2026-64309

CVE-2026-64309 is a Linux kernel vulnerability in the crypto: ccp (SEV-SNP) subsystem. The SNP_COMMIT ioctl would perform SNP initialization even when the component was previously uninitialized. Since the SNP_COMMIT command is valid in the UNINIT firmware state, this could cause side effects: if ...

CVE-2026-64308

CVE-2026-64308 affects the Linux kernel's crypto:ccp module, which handles AMD SEV (Secure Encrypted Virtualization) and SNP (Secure Nested Paging). The root cause is that the ioctl(SNP_VLEK_LOAD) handler performed a pointless init/shutdown wrapper—firmware deletes the VLEK on SNP_SHUTDOWN anyway...

EUVD-2026-49019

In the Linux kernel, the following vulnerability has been resolved: crypto: ccp - Do not initialize SNP for ioctlSNPCONFIG Sashiko notes: if SEV initialization fails and KVM is actively running normal VMs, could a userspace process trigger this code path via /dev/sev ioctls e.g., SEVPDHGEN and ze...

CVE-2026-64307

CVE-2026-64307 is a Denial of Service in the Linux kernel's crypto:ccp module (SEV/SNP support). If SEV initialization fails while KVM is running active VMs, a local user with low privileges can trigger the SNP_CONFIG ioctl via /dev/sev, causing a re-initialization that zeros out MSR_VM_HSAVE_PA ...

CVE-2026-64307 crypto: ccp - Do not initialize SNP for ioctl(SNP_CONFIG)

In the Linux kernel, the following vulnerability has been resolved: crypto: ccp - Do not initialize SNP for ioctlSNPCONFIG Sashiko notes: if SEV initialization fails and KVM is actively running normal VMs, could a userspace process trigger this code path via /dev/sev ioctls e.g., SEVPDHGEN and ze...

CVE-2026-64285 KVM: SEV: Pin source page for write when adding CPUID data for SNP guest

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Pin source page for write when adding CPUID data for SNP guest When populating a guestmemfd instance with the initial CPUID data for an SNP guest, acquire a writable pin on the source page as KVM will write back the...

CVE-2026-64285

CVE-2026-64285 affects the Linux kernel KVM SEV SNP path. When populating a guest’s initial CPUID data, KVM may pin a source page as writable and write back data if the userspace-provided CPUID data is rejected by trusted firmware, risking clobbering read-only memory due to kernel mappings. Multi...

CVE-2026-64285 KVM: SEV: Pin source page for write when adding CPUID data for SNP guest

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Pin source page for write when adding CPUID data for SNP guest When populating a guestmemfd instance with the initial CPUID data for an SNP guest, acquire a writable pin on the source page as KVM will write back the...

CVE-2026-64285

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Pin source page for write when adding CPUID data for SNP guest When populating a guestmemfd instance with the initial CPUID data for an SNP guest, acquire a writable pin on the source page as KVM will write back the...

EUVD-2026-48997

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Pin source page for write when adding CPUID data for SNP guest When populating a guestmemfd instance with the initial CPUID data for an SNP guest, acquire a writable pin on the source page as KVM will write back the...

Unexpected exit in certain situations with NSEC and NSEC3 both present

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PT-2026-64590

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the s390 architecture where the load unaligned zeropad function reads eight bytes from unaligned addresses, which may cross page boundaries. While the function handles...

PT-2026-64506

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the KVM SEV implementation when populating a guest memfd instance with initial CPUID data for an SNP guest. KVM may write back corrected CPUID information if the data...

Linux Distros Unpatched Vulnerability : CVE-2026-64369

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - s390: Revert support for DCACHEWORDACCESS loadunalignedzeropad reads eight bytes from unaligned addresses and may cross page boundaries. It handles exceptions...

PT-2026-64530

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the crypto: ccp component where the SNP COMMIT command could trigger the initialization of SNP even if it was previously uninitialized. If SEV initialization fails whi...

PT-2026-64531

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the crypto ccp component where the sev move to init state function incorrectly initializes SNP for certain SEV ioctls. A userspace process could potentially trigger th...

PT-2026-64528

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A flaw exists in the crypto ccp component where the system could attempt to initialize SNP during an ioctlSNP CONFIG call. If SEV initialization fails while KVM is running normal VMs, a...

Linux Distros Unpatched Vulnerability : CVE-2026-64308

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: crypto: ccp - Do not initialize SNP for ioctlSNPVLEKLOAD Sashiko notes: if SEV initializatio...

DEBIAN-CVE-2026-66339

A flaw was found in libsoup. After a CONNECT tunnel is established through an HTTP proxy, libsoup incorrectly attaches the Proxy-Authorization header to subsequent HTTPS requests sent through that tunnel to the destination server. This allows the destination server to capture proxy credentials,...

CVE-2026-66339

A flaw was found in libsoup. After a CONNECT tunnel is established through an HTTP proxy, libsoup incorrectly attaches the Proxy-Authorization header to subsequent HTTPS requests sent through that tunnel to the destination server. This allows the destination server to capture proxy credentials,...