CVE-2026-90303

CVE-2026-90303 affects the Linux kernel on ARM architecture. When CONFIG_DEBUG_USER=y and the kernel command-line option user_debug=31 are active, a user fault can trigger show_pte() without holding any lock. If another thread in the same process concurrently calls munmap() , page table pages may...

CVE-2026-90303 ARM: 9485/1: mm: acquire mmap write lock around show_pte() for user faults

In the Linux kernel, the following vulnerability has been resolved: ARM: 9485/1: mm: acquire mmap write lock around showpte for user faults When CONFIGDEBUGUSER=y, and cmdline "userdebug=31" is set, a user fault may trigger showpte without any lock. If another thread in the same process...

EUVD-2026-81964

In the Linux kernel, the following vulnerability has been resolved: ARM: 9485/1: mm: acquire mmap write lock around showpte for user faults When CONFIGDEBUGUSER=y, and cmdline "userdebug=31" is set, a user fault may trigger showpte without any lock. If another thread in the same process...

CVE-2026-90303

In the Linux kernel, the following vulnerability has been resolved: ARM: 9485/1: mm: acquire mmap write lock around showpte for user faults When CONFIGDEBUGUSER=y, and cmdline "userdebug=31" is set, a user fault may trigger showpte without any lock. If another thread in the same process...

CVE-2026-90301

CVE-2026-90301 is a use-after-free in the Linux kernel's OCFS2 file system heartbeat subsystem (o2hb ). The struct o2hb_region is exposed to o2net negotiate handlers before the heartbeat runtime is fully initialized, and can be freed while in-flight callbacks or delayed timeout work still referen...

CVE-2026-90302 ocfs2: synchronize heartbeat callbacks with o2net teardown

In the Linux kernel, the following vulnerability has been resolved: ocfs2: synchronize heartbeat callbacks with o2net teardown Patch series "ocfs2: harden heartbeat teardown races". This series fixes two OCFS2 heartbeat/o2net teardown races found by KASAN. This patch of 2: Heartbeat callbacks sta...

CVE-2026-90301 ocfs2: o2hb: quiesce negotiate handlers and timeout work

In the Linux kernel, the following vulnerability has been resolved: ocfs2: o2hb: quiesce negotiate handlers and timeout work Heartbeat regions publish struct o2hbregion as the private data for the NEGOTIMEOUT and NEGOAPPROVE o2net handlers as soon as makeitem creates the configfs region. The...

CVE-2026-90302

In the Linux kernel, the following vulnerability has been resolved: ocfs2: synchronize heartbeat callbacks with o2net teardown Patch series "ocfs2: harden heartbeat teardown races". This series fixes two OCFS2 heartbeat/o2net teardown races found by KASAN. This patch of 2: Heartbeat callbacks sta...

EUVD-2026-81894

In the Linux kernel, the following vulnerability has been resolved: ocfs2: o2hb: quiesce negotiate handlers and timeout work Heartbeat regions publish struct o2hbregion as the private data for the NEGOTIMEOUT and NEGOAPPROVE o2net handlers as soon as makeitem creates the configfs region. The...

EUVD-2026-81963

In the Linux kernel, the following vulnerability has been resolved: ocfs2: synchronize heartbeat callbacks with o2net teardown Patch series "ocfs2: harden heartbeat teardown races". This series fixes two OCFS2 heartbeat/o2net teardown races found by KASAN. This patch of 2: Heartbeat callbacks sta...

CVE-2026-90302 ocfs2: synchronize heartbeat callbacks with o2net teardown

In the Linux kernel, the following vulnerability has been resolved: ocfs2: synchronize heartbeat callbacks with o2net teardown Patch series "ocfs2: harden heartbeat teardown races". This series fixes two OCFS2 heartbeat/o2net teardown races found by KASAN. This patch of 2: Heartbeat callbacks sta...

CVE-2026-90301

In the Linux kernel, the following vulnerability has been resolved: ocfs2: o2hb: quiesce negotiate handlers and timeout work Heartbeat regions publish struct o2hbregion as the private data for the NEGOTIMEOUT and NEGOAPPROVE o2net handlers as soon as makeitem creates the configfs region. The...

CVE-2026-90300 bpf: Clear buf on error in __bpf_get_task_stack

In the Linux kernel, the following vulnerability has been resolved: bpf: Clear buf on error in bpfgettaskstack Both bpfgettaskstack and bpfgettaskstacksleepable helpers that use bpfgettaskstack have buf defined as ARGPTRTOUNINITMEM argument and we should initialize the buf on every return path...

EUVD-2026-81893

In the Linux kernel, the following vulnerability has been resolved: bpf: Clear buf on error in bpfgettaskstack Both bpfgettaskstack and bpfgettaskstacksleepable helpers that use bpfgettaskstack have buf defined as ARGPTRTOUNINITMEM argument and we should initialize the buf on every return path...

CVE-2026-90300

CVE-2026-90300 affects the Linux kernel BPF subsystem, specifically the __bpf_get_task_stack helper used by both bpf_get_task_stack and bpf_get_task_stack_sleepable. The buffer argument is declared as ARG_PTR_TO_UNINIT_MEM, requiring initialization on every return path, but the error/fail paths w...

CVE-2026-90300 bpf: Clear buf on error in __bpf_get_task_stack

In the Linux kernel, the following vulnerability has been resolved: bpf: Clear buf on error in bpfgettaskstack Both bpfgettaskstack and bpfgettaskstacksleepable helpers that use bpfgettaskstack have buf defined as ARGPTRTOUNINITMEM argument and we should initialize the buf on every return path...

CVE-2026-90300

In the Linux kernel, the following vulnerability has been resolved: bpf: Clear buf on error in bpfgettaskstack Both bpfgettaskstack and bpfgettaskstacksleepable helpers that use bpfgettaskstack have buf defined as ARGPTRTOUNINITMEM argument and we should initialize the buf on every return path...

EUVD-2026-81892

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix sleepable check for tracing/lsm prog When CONFIGFUNCTIONERRORINJECTION is disabled, a sleepable tracing prog is allowed to attach to 'x64'-alike prefix symbols. It is because the verifier does not verify whether the symb...

EUVD-2026-81891

In the Linux kernel, the following vulnerability has been resolved: drm/sun4i: tcon: Drop TCON TOP device reference offinddevicebynode takes a device reference. Drop it after mux configuration succeeds...

CVE-2026-90298 drm/sun4i: tcon: Drop TCON TOP device reference

In the Linux kernel, the following vulnerability has been resolved: drm/sun4i: tcon: Drop TCON TOP device reference offinddevicebynode takes a device reference. Drop it after mux configuration succeeds...