CVE-2026-31787

XSA-487 / CVE-2026-31787 Linux kernel double free in Xen privcmd driver A double free of kernel memory in the Linux kernel's Xen privcmd driver allows circumvention of kernel lockdown secure boot. Exploitation requires root-level access, which limits the broader security implications. | ---|---...

Citrix-Virtual-Apps-XEN-Exploit

CVE-2024-xxxx Citrix Virtual Apps and Desktops XEN Unauthenticated Remote Code execution See our blog post for technical details https://github.com/user-attachments/assets/563fd110-5321-49f7-8dc3-48eb0a53e0f9 PoC in Action python exploit-citrix-xen.py --target 192.168.1.120 --port 80 --cmd "whoam...

cve-2024-8069-exp-Citrix-Virtual-Apps-XEN

CVE-2024-8068 and CVE-2024-8069 Citrix Virtual Apps and Desktops XEN Unauthenticated Remote Code Execution Vulnerability Check out our blog post for detailed technical information. https://github.com/user-attachments/assets/563fd110-5321-49f7-8dc3-48eb0a53e0f9 Exploit Demonstration python...

SUSE CVE-2026-98900

In the Linux kernel, the following vulnerability has been resolved: xen/gntalloc: validate grant count before allocation gntallocioctlalloc allocates the grant-id array before checking whether the requested count fits within the global grant limit. Counts above that limit cannot succeed, so rejec...

CVE-2026-99057

The Linux kernel contains a memory leak vulnerability in the xen/netfront component. When a response chain contains more slots than the skb's frags can accommodate, xennet_fill_frags() returns an error and xennet_poll() moves to an error path. Because the skb being filled is already dequeued from...

EUVD-2026-108852

In the Linux kernel, the following vulnerability has been resolved: xen/netfront: don't leak the skb when xennetfillfrags fails When a response chain has more slots than fit in the skb's frags, xennetfillfrags returns an error and xennetpoll jumps to its error path. That path moves what's left on...

CVE-2026-99057

In the Linux kernel, the following vulnerability has been resolved: xen/netfront: don't leak the skb when xennetfillfrags fails When a response chain has more slots than fit in the skb's frags, xennetfillfrags returns an error and xennetpoll jumps to its error path. That path moves what's left on...

CVE-2026-99057 xen/netfront: don't leak the skb when xennet_fill_frags() fails

In the Linux kernel, the following vulnerability has been resolved: xen/netfront: don't leak the skb when xennetfillfrags fails When a response chain has more slots than fit in the skb's frags, xennetfillfrags returns an error and xennetpoll jumps to its error path. That path moves what's left on...

EUVD-2026-108856

In the Linux kernel, the following vulnerability has been resolved: xen/gntalloc: validate grant count before allocation gntallocioctlalloc allocates the grant-id array before checking whether the requested count fits within the global grant limit. Counts above that limit cannot succeed, so rejec...

CVE-2026-98900

The Linux kernel contains a vulnerability in the xen/gntalloc component where the gntalloc_ioctl_alloc() function allocates the grant-id array before verifying if the requested count exceeds the global grant limit. This allows user-controlled allocations to reach kcalloc() even when they should b...

CVE-2026-98900

In the Linux kernel, the following vulnerability has been resolved: xen/gntalloc: validate grant count before allocation gntallocioctlalloc allocates the grant-id array before checking whether the requested count fits within the global grant limit. Counts above that limit cannot succeed, so rejec...

CVE-2026-98900 xen/gntalloc: validate grant count before allocation

In the Linux kernel, the following vulnerability has been resolved: xen/gntalloc: validate grant count before allocation gntallocioctlalloc allocates the grant-id array before checking whether the requested count fits within the global grant limit. Counts above that limit cannot succeed, so rejec...

CVE-2026-79608

A flaw was found in Xen. Due to an inverted conditional check in the handling of processor configuration registers, the software mitigation for the Zenbleed hardware vulnerability is not applied when required. A malicious guest user can exploit this lack of protection to access sensitive data...

CVE-2026-79611

A flaw was found in Xen. A user inside a guest virtual machine can cause a Denial of Service DoS of that guest by enabling a specific combination of processor debugging and branch tracing states. Due to improper state handling during hardware virtualization transitions, the hypervisor triggers a...

CVE-2026-79609

A flaw was found in Xen. A malicious paravirtualized PV guest can cause a denial of service DoS by crashing the host hypervisor. During Xen Page Table Isolation XPTI processing, Xen attempts to access guest root page tables located in memory beyond the direct memory mapping boundary. Attempting t...

CVE-2026-79610

A flaw was found in Xen. When a guest virtual machine repeatedly changes grant table configurations, the hypervisor frees and reallocates status memory pages, rendering previously calculated pointers invalid. A malicious guest can exploit these stale pointers to corrupt hypervisor memory,...

CVE-2026-102699

A flaw was found in Xen. A malicious guest domain can trigger an integer underflow when requesting cache flush operations. This calculation error leads to an excessively long processing loop in the hypervisor, causing the host system to crash and resulting in a Denial of Service DoS. Mitigation...

Fedora 44 : xen (2026-839be67202)

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-839be67202 advisory. x86/AMD: ineffectual Zenbleed workaround XSA-515, CVE-2026-79608 x86: XPTI may break on huge-memory systems XSA-516, CVE-2026-79609 grant-table:...

CVE-2026-113610

Xen Orchestra before 6.9.0 contains an authorization bypass vulnerability in the xo-server user.set API method that allows low-privileged authenticated users to modify other users' preferences by supplying an arbitrary target user id. Attackers can delete the preferences.otp TOTP secret to disabl...

CVE-2026-113610

Xen Orchestra versions prior to 6.9.0 are vulnerable to an authorization bypass within the xo-server user.set API method. This flaw allows low-privileged authenticated users to modify the preferences of other users by providing an arbitrary target user ID. Consequences include the ability to dele...