Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: netfilter: xtIDLETIMER: Rejects the reuse of ALARM timer labels in revision 0 rules. In revision 0 rules, reusing timers by label always involves calling modtimer on the uninitialized timer-timer. If the label was created first i...

CVE-2026-80727

CVE-2026-80727 affects the Linux kernel x86 MCE (Machine Check Exception) subsystem. During boot, the CMCI storm detection path (cmci_discover → mce_timer_kick → __mod_timer) attempts to modify a timer that has not yet been initialized via timer_setup(), triggering ODEBUG assertions (assert_init ...

OESA-2026-2582 kernel security update

The Linux Kernel, the operating system core itself. Security Fixes: In the Linux kernel, the following vulnerability has been resolved: mISDN: hfcpci: Fix warning when deleting uninitialized timer With CONFIGDEBUGOBJECTSTIMERS unloading hfcpci module leads to the following splat: 250.215892 ODEBU...

CVE-2026-23274

A flaw was found in the Linux kernel's netfilter: xtIDLETIMER module. This vulnerability occurs when revision 0 rules attempt to reuse a timer label previously created by revision 1 with alarm timer semantics. This action can lead to calling modtimer on an uninitialized timer list. A local attack...

EUVD-2026-13610

In the Linux kernel, the following vulnerability has been resolved: netfilter: xtIDLETIMER: reject rev0 reuse of ALARM timer labels IDLETIMER revision 0 rules reuse existing timers by label and always call modtimer on timer-timer. If the label was created first by revision 1 with XTIDLETIMERALARM...

AZL-80201 CVE-2026-23274 affecting package kernel for versions less than 6.6.130.1-1

In the Linux kernel, the following vulnerability has been resolved: netfilter: xtIDLETIMER: reject rev0 reuse of ALARM timer labels IDLETIMER revision 0 rules reuse existing timers by label and always call modtimer on timer-timer. If the label was created first by revision 1 with XTIDLETIMERALARM...

UBUNTU-CVE-2026-23274

In the Linux kernel, the following vulnerability has been resolved: netfilter: xtIDLETIMER: reject rev0 reuse of ALARM timer labels IDLETIMER revision 0 rules reuse existing timers by label and always call modtimer on timer-timer. If the label was created first by revision 1 with XTIDLETIMERALARM...

CVE-2026-23274

In the Linux kernel, the following vulnerability has been resolved: netfilter: xtIDLETIMER: reject rev0 reuse of ALARM timer labels IDLETIMER revision 0 rules reuse existing timers by label and always call modtimer on timer-timer. If the label was created first by revision 1 with XTIDLETIMERALARM...

CVE-2026-23274

In the Linux kernel, the following vulnerability has been resolved: netfilter: xtIDLETIMER: reject rev0 reuse of ALARM timer labels IDLETIMER revision 0 rules reuse existing timers by label and always call modtimer on timer-timer. If the label was created first by revision 1 with XTIDLETIMERALARM...

Linux Kernel Security Vulnerabilities

The Linux kernel is the core of the open-source operating system Linux, developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from the xtIDLETIMER module allowing rev0 rules to reuse ALARM type timer labels. This could lead to a...

Linux Distros Unpatched Vulnerability : CVE-2026-23274

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: netfilter: xtIDLETIMER: reject rev0 reuse of ALARM timer labels IDLETIMER revision 0 rules...

mISDN: hfcpci: Fix warning when deleting uninitialized timer

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Linux Distros Unpatched Vulnerability : CVE-2025-39833

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - mISDN: hfcpci: Fix warning when deleting uninitialized timer With CONFIGDEBUGOBJECTSTIMERS unloading hfcpci module leads to the following splat: 250.215892...

SUSE CVE-2025-39833

In the Linux kernel, the following vulnerability has been resolved: mISDN: hfcpci: Fix warning when deleting uninitialized timer With CONFIGDEBUGOBJECTSTIMERS unloading hfcpci module leads to the following splat: 250.215892 ODEBUG: assertinit not available active state 0 object: ffffffffc01a3dc0...

AZL-67416 CVE-2025-39833 affecting package kernel 6.6.157.1-1

In the Linux kernel, the following vulnerability has been resolved: mISDN: hfcpci: Fix warning when deleting uninitialized timer With CONFIGDEBUGOBJECTSTIMERS unloading hfcpci module leads to the following splat: 250.215892 ODEBUG: assertinit not available active state 0 object: ffffffffc01a3dc0...

DEBIAN-CVE-2025-39833

In the Linux kernel, the following vulnerability has been resolved: mISDN: hfcpci: Fix warning when deleting uninitialized timer With CONFIGDEBUGOBJECTSTIMERS unloading hfcpci module leads to the following splat: 250.215892 ODEBUG: assertinit not available active state 0 object: ffffffffc01a3dc0...

CVE-2025-39833

In the Linux kernel, the following vulnerability has been resolved: mISDN: hfcpci: Fix warning when deleting uninitialized timer With CONFIGDEBUGOBJECTSTIMERS unloading hfcpci module leads to the following splat: 250.215892 ODEBUG: assertinit not available active state 0 object: ffffffffc01a3dc0...

UBUNTU-CVE-2025-39833

In the Linux kernel, the following vulnerability has been resolved: mISDN: hfcpci: Fix warning when deleting uninitialized timer With CONFIGDEBUGOBJECTSTIMERS unloading hfcpci module leads to the following splat: 250.215892 ODEBUG: assertinit not available active state 0 object: ffffffffc01a3dc0...

CVE-2025-39833 mISDN: hfcpci: Fix warning when deleting uninitialized timer

In the Linux kernel, the following vulnerability has been resolved: mISDN: hfcpci: Fix warning when deleting uninitialized timer With CONFIGDEBUGOBJECTSTIMERS unloading hfcpci module leads to the following splat: 250.215892 ODEBUG: assertinit not available active state 0 object: ffffffffc01a3dc0...

CVE-2025-39833

CVE-2025-39833 (Linux kernel) Root cause: when unloading the hfcpci module with CONFIG_DEBUG_OBJECTS_TIMERS enabled, an uninitialized timer could trigger a kernel warning path during deletion, as shown in the stack trace and timer-related debug prints. Impact: locally leveraged by a privileged co...