354 matches found
CVE-2026-79609
XPTI Xen Page Table Isolation was introduced to mitigate Meltdown CVE-2017-5754, one aspect of XSA-254. This involves copying 64-bit PV guest page table entries from guest-chosen root page tables to the Xen- chosen one which is in actual use by hardware. To read the guest root page table, the...
PT-2026-111665
Name of the Vulnerable Software and Affected Versions xen versions prior to 4.22.0 06-1.1 Description Xen Page Table Isolation XPTI is used to mitigate Meltdown by copying 64-bit PV guest page table entries from guest-chosen root page tables to the Xen-chosen one used by hardware. The directmap i...
Xen: Stale TLB Entry Ahead of Page Scrubbing (XSA-511)
x86 PV guests can free memory pages while still keeping a stale TLB entry pointing to them. A TLB flush is only issued by Xen if needed when the page is re-used. Since it's possible for the page to be scrubbed ahead of the TLB flush, there's a window where a PV guest can modify an already scrubbe...
CVE-2026-79603
A flaw was found in Xen. x86 paravirtualized PV guests can free memory pages while a stale Translation Lookaside Buffer TLB entry still points to them. This creates a window where a PV guest can modify a page after it has been scrubbed cleared but before the TLB is flushed. This could lead to dat...
DEBIAN-CVE-2026-79603
x86 PV guests can free memory pages while still keeping a stale TLB entry pointing to them. A TLB flush is only issued by Xen if needed when the page is re-used. Since it's possible for the page to be scrubbed ahead of the TLB flush, there's a window where a PV guest can modify an already scrubbe...
CVE-2026-79603
x86 PV guests can free memory pages while still keeping a stale TLB entry pointing to them. A TLB flush is only issued by Xen if needed when the page is re-used. Since it's possible for the page to be scrubbed ahead of the TLB flush, there's a window where a PV guest can modify an already scrubbe...
CVE-2026-79603 Unconditionally do TLB flushing ahead of page scrubbing
x86 PV guests can free memory pages while still keeping a stale TLB entry pointing to them. A TLB flush is only issued by Xen if needed when the page is re-used. Since it's possible for the page to be scrubbed ahead of the TLB flush, there's a window where a PV guest can modify an already scrubbe...
EUVD-2026-72721
x86 PV guests can free memory pages while still keeping a stale TLB entry pointing to them. A TLB flush is only issued by Xen if needed when the page is re-used. Since it's possible for the page to be scrubbed ahead of the TLB flush, there's a window where a PV guest can modify an already scrubbe...
CVE-2026-79603
The Xen hypervisor is vulnerable to a flaw where x86 paravirtualized (PV) guests can free memory pages while a stale Translation Lookaside Buffer (TLB) entry still points to them. Because Xen only issues a TLB flush when a page is reused, a window exists where a PV guest can modify an already scr...
CVE-2026-79603 Unconditionally do TLB flushing ahead of page scrubbing
x86 PV guests can free memory pages while still keeping a stale TLB entry pointing to them. A TLB flush is only issued by Xen if needed when the page is re-used. Since it's possible for the page to be scrubbed ahead of the TLB flush, there's a window where a PV guest can modify an already scrubbe...
UBUNTU-CVE-2026-79603
x86 PV guests can free memory pages while still keeping a stale TLB entry pointing to them. A TLB flush is only issued by Xen if needed when the page is re-used. Since it's possible for the page to be scrubbed ahead of the TLB flush, there's a window where a PV guest can modify an already scrubbe...
CVE-2026-79603
x86 PV guests can free memory pages while still keeping a stale TLB entry pointing to them. A TLB flush is only issued by Xen if needed when the page is re-used. Since it's possible for the page to be scrubbed ahead of the TLB flush, there's a window where a PV guest can modify an already scrubbe...
Unconditionally do TLB flushing ahead of page scrubbing
ISSUE DESCRIPTION x86 PV guests can free memory pages while still keeping a stale TLB entry pointing to them. A TLB flush is only issued by Xen if needed when the page is re-used. Since it's possible for the page to be scrubbed ahead of the TLB flush, there's a window where a PV guest can modify ...
PT-2026-87052
x86 PV guests can free memory pages while still keeping a stale TLB entry pointing to them. A TLB flush is only issued by Xen if needed when the page is re-used. Since it's possible for the page to be scrubbed ahead of the TLB flush, there's a window where a PV guest can modify an already scrubbe...
Linux Distros Unpatched Vulnerability : CVE-2026-79603
The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - x86 PV guests can free memory pages while still keeping a stale TLB entry pointing to them. A TLB flush is only issued by Xen if needed when the page is re-used...
Security update for xen
This update for xen fixes the following issues: Update to Xen 4.20.2 jscPED-8907. Security issues fixed: CVE-2025-58149: incorrect removal of permissions on PCI device unplug allows PV guests to access memory of devices no longer assigned to it XSA-476, bsc1252692. Other issues fixed: Failure to...
EUVD-2019-8190
Malware in sbrugna...
EUVD-2013-2056
Malware in sbrugna...