Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: rvc: Sparse-Memory/vmemmap out-of-bounds fix The offset of vmemmap has been adjusted so that the first page of vmemmap is mapped to the first page of physical memory. This ensures that the bounds of vmemmap are respected durin...

kernel: ksm: use range-walk function to jump over holes in scan_get_next_rmap_item

A resource exhaustion vulnerability was found in the Kernel Same-page Merging KSM subsystem of the Linux kernel. When scanning processes with large sparse virtual memory mappings e.g., 32 TiB with one mapped page, ksmd inefficiently walks every address rather than skipping unmapped holes. This...

CVE-2026-16280

An integer overflow when calculating physical offsets for sparse PMRs may result in 32-bit truncation of address computations for PMRs larger than 4 GB. This can lead to incorrect GPU MMU mappings and may allow a non-privileged user to trigger access to unintended physical memory, resulting in...

CVE-2026-16280 GPU DDK - Integer overflow in _PMRLogicalOffsetToPhysicalOffset

An integer overflow when calculating physical offsets for sparse PMRs may result in 32-bit truncation of address computations for PMRs larger than 4 GB. This can lead to incorrect GPU MMU mappings and may allow a non-privileged user to trigger access to unintended physical memory, resulting in...

CVE-2026-64149

A flaw was found in the Linux kernel's Direct Memory Access DMA mapping subsystem. On ARM64 systems configured with SPARSEMEM a memory management model, the dmamapresource function could incorrectly identify valid memory-mapped input/output MMIO addresses as random access memory RAM. This false...

CVE-2026-64149

In the Linux kernel, the following vulnerability has been resolved: dma-mapping: move dmamapresource sanity check into debug code dmamapresource uses pfnvalid to ensure the range is not RAM. However, pfnvalid only checks for availability of the memory map for a PFN but it does not ensure that the...

CVE-2026-64149

The Linux kernel's dma_map_resource() used pfn_valid() to verify a PFN range is not RAM, but this check only confirms memory map availability, not actual RAM backing. On ARM64 SPARSEMEM systems with 128MB sections, MMIO addresses sharing a section with RAM falsely triggered WARN_ON_ONCE, causing ...

CVE-2026-64149

In the Linux kernel, the following vulnerability has been resolved: dma-mapping: move dmamapresource sanity check into debug code dmamapresource uses pfnvalid to ensure the range is not RAM. However, pfnvalid only checks for availability of the memory map for a PFN but it does not ensure that the...

CVE-2026-64149 dma-mapping: move dma_map_resource() sanity check into debug code

In the Linux kernel, the following vulnerability has been resolved: dma-mapping: move dmamapresource sanity check into debug code dmamapresource uses pfnvalid to ensure the range is not RAM. However, pfnvalid only checks for availability of the memory map for a PFN but it does not ensure that the...

CVE-2026-64149 dma-mapping: move dma_map_resource() sanity check into debug code

In the Linux kernel, the following vulnerability has been resolved: dma-mapping: move dmamapresource sanity check into debug code dmamapresource uses pfnvalid to ensure the range is not RAM. However, pfnvalid only checks for availability of the memory map for a PFN but it does not ensure that the...

PT-2026-61466

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A flaw exists in the dma map resource function where a sanity check using pfn valid incorrectly identifies certain Memory-Mapped I/O MMIO addresses as RAM. On ARM64 systems using...

CVE-2026-41154

Software installed and run as a non-privileged user may cause OOB kernel memory reads or writes through GPU API calls. When indexing pages larger than 4kB in the page freeing logic of the sparse memory implementation, incorrect buffer indexing leads to OOB access...

CVE-2026-41154 GPU DDK - Incorrect Index Calculation in CMA Cleanup Path of AllocOSPages_Sparse

Software installed and run as a non-privileged user may cause OOB kernel memory reads or writes through GPU API calls. When indexing pages larger than 4kB in the page freeing logic of the sparse memory implementation, incorrect buffer indexing leads to OOB access...

CVE-2026-41154

The GPU DDK is vulnerable to an out-of-bounds (OOB) memory access issue. The root cause is incorrect buffer indexing within the page freeing logic of the sparse memory implementation specifically when indexing pages larger than 4kB . An attacker running software as a non-privileged user may lever...

CVE-2026-41154

Software installed and run as a non-privileged user may cause OOB kernel memory reads or writes through GPU API calls. When indexing pages larger than 4kB in the page freeing logic of the sparse memory implementation, incorrect buffer indexing leads to OOB access...

EUVD-2026-43034

Software installed and run as a non-privileged user may cause OOB kernel memory reads or writes through GPU API calls. When indexing pages larger than 4kB in the page freeing logic of the sparse memory implementation, incorrect buffer indexing leads to OOB access...

PT-2026-57310

Software installed and run as a non-privileged user may cause OOB kernel memory reads or writes through GPU API calls. When indexing pages larger than 4kB in the page freeing logic of the sparse memory implementation, incorrect buffer indexing leads to OOB access...

CVE-2026-41154: Out-of-bounds Write

Software installed and run as a non-privileged user may cause OOB kernel memory reads or writes through GPU API calls. When indexing pages larger than 4kB in the page freeing logic of the sparse memory implementation, incorrect buffer indexing leads to OOB access...

CVE-2026-34195

Software installed and run as a non-privileged user may conduct intentional GPU sparse memory API calls to cause out of bounds write in the kernel. The product incorrectly indexes internal state when performing sparse allocation remapping...

CVE-2026-41158 GPU DDK - Backed sparse PMRs are not handled by deferred free mechanism after shrink

Software installed and run as a non-privileged user may conduct GPU system calls to write to arbitrary freed physical pages. Physical memory allocated and freed, without the deferred free mechanism can lead to those resources being used for read/write by the GPU after the kernel module has freed...