RLSA-2026:44438 Important: compat-openssl11 security update

The OpenSSL toolkit provides support for secure communications between machines. This version of OpenSSL package contains only the libraries from the 1.1.1 version and is provided for compatibility with previous releases. Security Fixes: openssl: Heap Use-After-Free in OpenSSL PKCS7verify...

compat-openssl11 security update

An update is available for compat-openssl11. This update affects Rocky Linux 9. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list The OpenSSL toolkit provides support for secure communications betwe...

xorg-x11-server: xorg-x11-server-Xwayland: xorg-x11-server: use-after-free in FreeCounter()

A use-after-free flaw was found in the X.Org X server and Xwayland in FreeCounter. A client that sets up multiple SyncCounters and awaits on those triggers can trigger a use-after-free when destroying those counters via a second client connection. This may be used to crash the server, or for...

xorg-x11-server: xorg-x11-server-Xwayland: xorg-x11-server: use-after-free in miSyncDestroyFence()

A use-after-free flaw was found in the X.Org X server and Xwayland in miSyncDestroyFence. A client that sets up multiple fence triggers can trigger a use-after-free function pointer call. An attacker would connect to the X server to set up a fence and await that fence, then a second X connection...

xorg-x11-server: xorg-x11-server-Xwayland: xorg-x11-server: use-after-free information disclosure in CreateSaverWindow()

A use-after-free flaw was found in the X.Org X server and Xwayland in CreateSaverWindow. A client can trigger a use-after-free read after changing window attributes and forcing the screen saver, leading to information disclosure...

xorg-x11-server: xorg-x11-server-Xwayland: xorg-x11-server: use-after-free in SyncChangeCounter()

A use-after-free flaw was found in the X.Org X server and Xwayland in SyncChangeCounter. A client that sets up multiple SyncCounters can trigger a use-after-free when destroying those counters via a second client connection while changing those counters. This may be used to crash the server, or f...

CVE-2026-64452

A flaw was found in the Linux kernel's 6LoWPAN IPv6 over Low-Power Wireless Personal Area Networks component. A race condition in the lowpannhcdouncompression function can lead to a use-after-free vulnerability. This occurs when an NHC Next Header Compression descriptor is deallocated while anoth...

CVE-2026-64418

A flaw was found in the Linux kernel's memory management mm shrinker subsystem. A race condition exists where the shrinkerinfo array can be prematurely freed while still accessible, leading to a use-after-free or double-free vulnerability. This memory corruption can be exploited by a local attack...

CVE-2026-64342

A flaw was found in the Linux kernel's USB iowarrior driver. This vulnerability, a use-after-free, occurs because write operations are not properly halted when a device disconnects. An attacker could potentially exploit this to cause system instability or execute arbitrary code...

CVE-2026-64459

A flaw was found in the Linux kernel's TCP-AO TCP Authentication Option implementation. An unprivileged local user can exploit a use-after-free vulnerability in the tcpaodestroysock function. By manipulating TCP sockets with TCPMD5SIG and TCPAOADDKEY, an attacker can trigger a race condition duri...

CVE-2026-64424

A flaw was found in the Linux kernel's netpoll module. During the system shutdown process, a race condition can occur where a network transmission worker attempts to access memory that has already been deallocated. This use-after-free vulnerability can lead to system instability, causing a denial...

CVE-2026-64433

A flaw was found in the Linux kernel's Bluetooth Management MGMT subsystem. A use-after-free UAF vulnerability exists in the adddevicecomplete function. This occurs because the function does not properly acquire a lock before accessing connection parameters, allowing a concurrent device removal...

CVE-2026-64346

A flaw was found in the Linux kernel's USB gadget driver. A race condition exists where the udc USB Device Controller memory, which manages USB gadgets, can be freed while still being accessed. This use-after-free vulnerability can be triggered by a local attacker, potentially through operations...

CVE-2026-64437

A flaw was found in the ksmbd component of the Linux kernel. This vulnerability allows an authenticated client using the Server Message Block SMB protocol to trigger a use-after-free error. By sending specific close and cancel requests, an attacker can cause the kernel to crash, leading to a deni...

CVE-2026-64406

A flaw was found in the Linux kernel's Bluetooth subsystem. This use-after-free UAF vulnerability in the btacceptdequeue function occurs because a temporary reference is prematurely dropped, leading to sockhold accessing freed memory. An attacker could potentially exploit this to cause a denial o...

CVE-2026-64362

A flaw was found in the Linux kernel's lg-g15 Human Interface Device HID driver. This vulnerability, a use-after-free, occurs when a Logitech G15, G15 v2, or G510 keyboard is unplugged while a work item is pending. The driver fails to properly cancel this pending work, allowing it to access memor...

CVE-2026-64535

In the Linux kernel, the following vulnerability has been resolved: nvmet-tcp: Fix potential UAF when ddgst mismatch Shivam Kumar found via vulnerability testing: When data digest is enabled on an NVMe/TCP connection and a digest mismatch occurs on a non-final H2CDATA PDU during an R2T-based data...

CVE-2026-64535

The CVE-2026-64535 entry concerns the Linux kernel nvmet-tcp (NVMe/TCP) UAF risk during a digest mismatch. The issue occurs when a non-final H2C_DATA PDU triggers a digest error handler that calls nvmet_req_uninit(), which performs a percpu_ref_put() but does not mark the command as completed, no...

EUVD-2026-49113

In the Linux kernel, the following vulnerability has been resolved: nvmet-tcp: Fix potential UAF when ddgst mismatch Shivam Kumar found via vulnerability testing: When data digest is enabled on an NVMe/TCP connection and a digest mismatch occurs on a non-final H2CDATA PDU during an R2T-based data...

xorg-x11-server: xorg-x11-server-Xwayland: xorg-x11-server: use-after-free information disclosure in CreateSaverWindow()

A use-after-free flaw was found in the X.Org X server and Xwayland in CreateSaverWindow. A client can trigger a use-after-free read after changing window attributes and forcing the screen saver, leading to information disclosure...