kernel: Linux kernel KVM: Privilege escalation or denial of service due to improper shadow page table entry handling

A flaw was found in the Linux kernel's Kernel-based Virtual Machine KVM component. A local attacker with privileges on the host system could exploit a vulnerability in how KVM handles shadow page table entries SPTEs during memory-mapped I/O MMIO operations. By manipulating guest page table entrie...

CVE-2026-53250

In the Linux kernel, the following vulnerability has been resolved: xsk: cache csumstart/csumoffset to fix TOCTOU in xskskbmetadata The TX metadata area resides in the UMEM buffer which is memory-mapped and concurrently writable by userspace. In xskskbmetadata, csumstart and csumoffset are read...

DEBIAN-CVE-2026-53294

In the Linux kernel, the following vulnerability has been resolved: mailbox: mailbox-test: don't free the reused channel The RX channel can be aliased to the TX channel if it has a different MMIO. This special case needs to be handled when freeing the channels otherwise a double-free occurs...

CVE-2026-53294

In the Linux kernel, the following vulnerability has been resolved: mailbox: mailbox-test: don't free the reused channel The RX channel can be aliased to the TX channel if it has a different MMIO. This special case needs to be handled when freeing the channels otherwise a double-free occurs...

CVE-2026-53294

In the Linux kernel, the following vulnerability has been resolved: mailbox: mailbox-test: don't free the reused channel The RX channel can be aliased to the TX channel if it has a different MMIO. This special case needs to be handled when freeing the channels otherwise a double-free occurs...

CVE-2026-53294

In the Linux kernel, the following vulnerability has been resolved: mailbox: mailbox-test: don't free the reused channel The RX channel can be aliased to the TX channel if it has a different MMIO. This special case needs to be handled when freeing the channels otherwise a double-free occurs...

PT-2026-52933

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the mailbox-test component where a double-free occurs during the process of freeing channels. This happens because the RX channel can be aliased to the TX channel if i...

CVE-2026-53250 xsk: cache csum_start/csum_offset to fix TOCTOU in xsk_skb_metadata()

In the Linux kernel, the following vulnerability has been resolved: xsk: cache csumstart/csumoffset to fix TOCTOU in xskskbmetadata The TX metadata area resides in the UMEM buffer which is memory-mapped and concurrently writable by userspace. In xskskbmetadata, csumstart and csumoffset are read...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: drm/amd/pm: Disabling MMIO access during SMU Mode 1 reset During Mode 1 reset, the ASIC undergoes a reset cycle and becomes temporarily inaccessible via PCIe. Any attempt to access MMIO registers during this period e.g., from...

CVE-2024-36332

Improper isolation of GPU HW register space could allow a privileged attacker in malicious Guest Virtual Machine VM to perform unauthorized access to specific victim range of GPU MMIO register space, potentially causing the host OS to reboot and creating a Denial of Service DOS condition...

misc: ibmasm: fix OOB MMIO read in ibmasm_handle_mouse_interrupt()

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SUSE CVE-2026-46022

In the Linux kernel, the following vulnerability has been resolved: misc: ibmasm: fix OOB MMIO read in ibmasmhandlemouseinterrupt ibmasmhandlemouseinterrupt performs an out-of-bounds MMIO read when the queue reader or writer index from hardware exceeds REMOTEQUEUESIZE 60. A compromised service...

SUSE CVE-2026-46064

In the Linux kernel, the following vulnerability has been resolved: ibmasm: fix heap over-read in ibmasmsendi2omessage The ibmasmsendi2omessage function uses getdotcommandsize to compute the byte count for memcpytoio, but this value is derived from user-controlled fields in the dotcommandheader...

CVE-2026-46064

In the Linux kernel, the following vulnerability has been resolved: ibmasm: fix heap over-read in ibmasmsendi2omessage The ibmasmsendi2omessage function uses getdotcommandsize to compute the byte count for memcpytoio, but this value is derived from user-controlled fields in the dotcommandheader...

CVE-2026-46022

In the Linux kernel, the following vulnerability has been resolved: misc: ibmasm: fix OOB MMIO read in ibmasmhandlemouseinterrupt ibmasmhandlemouseinterrupt performs an out-of-bounds MMIO read when the queue reader or writer index from hardware exceeds REMOTEQUEUESIZE 60. A compromised service...

UBUNTU-CVE-2026-46064

In the Linux kernel, the following vulnerability has been resolved: ibmasm: fix heap over-read in ibmasmsendi2omessage The ibmasmsendi2omessage function uses getdotcommandsize to compute the byte count for memcpytoio, but this value is derived from user-controlled fields in the dotcommandheader...

UBUNTU-CVE-2026-46022

In the Linux kernel, the following vulnerability has been resolved: misc: ibmasm: fix OOB MMIO read in ibmasmhandlemouseinterrupt ibmasmhandlemouseinterrupt performs an out-of-bounds MMIO read when the queue reader or writer index from hardware exceeds REMOTEQUEUESIZE 60. A compromised service...

CVE-2026-46064 ibmasm: fix heap over-read in ibmasm_send_i2o_message()

In the Linux kernel, the following vulnerability has been resolved: ibmasm: fix heap over-read in ibmasmsendi2omessage The ibmasmsendi2omessage function uses getdotcommandsize to compute the byte count for memcpytoio, but this value is derived from user-controlled fields in the dotcommandheader...

CVE-2026-46064

In the Linux kernel, the following vulnerability has been resolved: ibmasm: fix heap over-read in ibmasmsendi2omessage The ibmasmsendi2omessage function uses getdotcommandsize to compute the byte count for memcpytoio, but this value is derived from user-controlled fields in the dotcommandheader...

CVE-2026-46022 misc: ibmasm: fix OOB MMIO read in ibmasm_handle_mouse_interrupt()

In the Linux kernel, the following vulnerability has been resolved: misc: ibmasm: fix OOB MMIO read in ibmasmhandlemouseinterrupt ibmasmhandlemouseinterrupt performs an out-of-bounds MMIO read when the queue reader or writer index from hardware exceeds REMOTEQUEUESIZE 60. A compromised service...