CVE-2026-79603

Xen hypervisor x86 PV (para-virtualized) guests can free memory pages while retaining a stale TLB entry pointing to them. Xen issues a TLB flush only when a freed page is re-used , not at the time of freeing. Because the page can be scrubbed (zeroed or reassigned) before that TLB flush occurs, a ...

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...

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...

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...

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...

EUVD-2026-72719

When guests are terminated, various pieces of cleanup need carrying out. The cleaning up of PCI devices which were assigned to guests, and the associated removal of tracking structures for IRQs used by the devices occurs relatively early in the process. Unfortunately after that point the guest...

CVE-2026-62437 x86: DMs may cause mem leak by IRQ binding

When guests are terminated, various pieces of cleanup need carrying out. The cleaning up of PCI devices which were assigned to guests, and the associated removal of tracking structures for IRQs used by the devices occurs relatively early in the process. Unfortunately after that point the guest...

CVE-2026-62437 x86: DMs may cause mem leak by IRQ binding

When guests are terminated, various pieces of cleanup need carrying out. The cleaning up of PCI devices which were assigned to guests, and the associated removal of tracking structures for IRQs used by the devices occurs relatively early in the process. Unfortunately after that point the guest...

CVE-2026-62437

When guests are terminated, various pieces of cleanup need carrying out. The cleaning up of PCI devices which were assigned to guests, and the associated removal of tracking structures for IRQs used by the devices occurs relatively early in the process. Unfortunately after that point the guest...

CVE-2026-62437

CVE-2026-62437 is a memory leak vulnerability in the Xen hypervisor's x86 device model (DM) path. During guest termination, PCI device cleanup removes IRQ tracking structures early in the process, but the guest's DM can subsequently re-establish those structures by re-binding IRQs , leaving at le...

UBUNTU-CVE-2026-62437

When guests are terminated, various pieces of cleanup need carrying out. The cleaning up of PCI devices which were assigned to guests, and the associated removal of tracking structures for IRQs used by the devices occurs relatively early in the process. Unfortunately after that point the guest...

CVE-2026-62437

When guests are terminated, various pieces of cleanup need carrying out. The cleaning up of PCI devices which were assigned to guests, and the associated removal of tracking structures for IRQs used by the devices occurs relatively early in the process. Unfortunately after that point the guest...

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...

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...

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 ...

x86: DMs may cause mem leak by IRQ binding

ISSUE DESCRIPTION When guests are terminated, various pieces of cleanup need carrying out. The cleaning up of PCI devices which were assigned to guests, and the associated removal of tracking structures for IRQs used by the devices occurs relatively early in the process. Unfortunately after that...

CVE-2026-63030-POC

wp2shell — CVE-2026-63030 + CVE-2026-60137 一日WordPress RCE利用链。未经身份验证。CVSS 9.8。 零依赖 — 仅需Python 3.8+标准库。 受影响版本 分支| 受影响版本| 已修复版本 ---|---|--- 6.9.x| 6.9.0 – 6.9.4| ≥ 6.9.5 7.0.x| 7.0.0 – 7.0.1| ≥ 7.0.2 利用链 两个CVE串联成未经身份验证的远程代码执行： root@kitploit: CVE-2026-63030 route confusion → batch desync bypasses au...

CVE-2026-86206, CVE-2026-86207: N-able N-central Authentication Bypass (FIXED)

Overview While conducting research into a recent N-able N-central authentication bypass vulnerability CVE-2026-18577, Rapid7 Labs discovered two new vulnerabilities affecting the latest version of N-central. When chained together, these two vulnerabilities allow a remote unauthenticated attacker ...

CVE-2026-4567-Post-Quantum-KEM-Timing-Side-Channel-Kyber-Decapsulation-

2. CVE-2026-4567 – Canal lateral de temporización del KEM post-cuántico desencapsulación de Kyber Resumen Una implementación vulnerable de la desencapsulación del KEM Kyber filtra bits de la clave secreta a través de diferencias de temporización en el paso de rechazo del texto cifrado, lo que...

SUSE-SU-2026:4086-1 Security update for perl-Net-DNS

This update for perl-Net-DNS fixes the following issue: - CVE-2026-81928: memory exhaustion via unbounded recursion in sigdata when re-encoding a message with a misplaced TSIG record bsc1278084...