PT-2025-38420

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The Linux kernel contains an issue in ext4 related to undefined behavior in a bit shift operation within the ext4 check flag values function. Shifting a signed 32-bit value by 31 bits is...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from an undefined behavior in the TTMTTFLAGPRIVPOPULATED bit manipulation, which could lead to an integer overflo...

PT-2025-38338

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A flaw exists in the Linux kernel related to undefined behavior in a bit shift operation within the DRM/TTM subsystem. Specifically, shifting a signed 32-bit value by 31 bits can lead to...

CVE-2022-50390: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: drm/ttm: fix undefined behavior in bit shift for TTMTTFLAGPRIVPOPULATED Shifting signed 32-bit value by 31 bits is undefined, so changing significant bit to unsigned. The UBSAN warning calltrace like below: UBSAN:...

CVE-2023-53361

In the Linux kernel, the following vulnerability has been resolved: LoongArch: mm: Add p?dleaf definitions When I do LTP test, LTP test case ksm06 caused panic at breakksmpmdentry - pmdleaf Huge page table but False - ptepresent panic The reason is pmdleaf is not defined, So like commit...

firefox: thunderbird: Sandbox escape due to undefined behavior, invalid pointer in the Graphics: Canvas2D component

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Sandbox escape due to undefined behavior, invalid pointer in the Graphics...

firefox: thunderbird: Sandbox escape due to undefined behavior, invalid pointer in the Graphics: Canvas2D component

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Sandbox escape due to undefined behavior, invalid pointer in the Graphics...

DEBIAN-CVE-2022-50366

In the Linux kernel, the following vulnerability has been resolved: powercap: intelrapl: fix UBSAN shift-out-of-bounds issue When value timeunit, the parameter of ilog2 will be zero and the return value is -1. u64-1 is too large for shift exponent and then will trigger shift-out-of-bounds: shift...

CVE-2022-50366 powercap: intel_rapl: fix UBSAN shift-out-of-bounds issue

In the Linux kernel, the following vulnerability has been resolved: powercap: intelrapl: fix UBSAN shift-out-of-bounds issue When value timeunit, the parameter of ilog2 will be zero and the return value is -1. u64-1 is too large for shift exponent and then will trigger shift-out-of-bounds: shift...

CVE-2025-41713

During a short time frame while the device is booting an unauthenticated remote attacker can send traffic to unauthorized networks due to the switch operating in an undefined state until a CPU-induced reset allows proper configuration...

Linux Distros Unpatched Vulnerability : CVE-2025-39821

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: perf: Avoid undefined behavior from stopping/starting inactive events Calling pmu-start/stop...

SUSE CVE-2025-39821

In the Linux kernel, the following vulnerability has been resolved: perf: Avoid undefined behavior from stopping/starting inactive events Calling pmu-start/stop on perf events in PERFEVENTSTATEOFF can leave event-hw.idx at -1. When PMU drivers later attempt to use this negative index as a shift...

DEBIAN-CVE-2025-39821

In the Linux kernel, the following vulnerability has been resolved: perf: Avoid undefined behavior from stopping/starting inactive events Calling pmu-start/stop on perf events in PERFEVENTSTATEOFF can leave event-hw.idx at -1. When PMU drivers later attempt to use this negative index as a shift...

CVE-2025-39821

In the Linux kernel, the following vulnerability has been resolved: perf: Avoid undefined behavior from stopping/starting inactive events Calling pmu-start/stop on perf events in PERFEVENTSTATEOFF can leave event-hw.idx at -1. When PMU drivers later attempt to use this negative index as a shift...

UBUNTU-CVE-2025-39821

In the Linux kernel, the following vulnerability has been resolved: perf: Avoid undefined behavior from stopping/starting inactive events Calling pmu-start/stop on perf events in PERFEVENTSTATEOFF can leave event-hw.idx at -1. When PMU drivers later attempt to use this negative index as a shift...

CVE-2025-39824

The CVE CVE-2025-39824 affects the Linux kernel HID subsystem. A crafted HID descriptor can trigger a use-after-free in hid_input handling during hidinput_connect() after hid_hw_start(), notably via ASUS HID devices (e.g., ASUS ROG N-Key keyboard). The root cause is that capability bitmaps may no...

CVE-2025-39821 perf: Avoid undefined behavior from stopping/starting inactive events

In the Linux kernel, the following vulnerability has been resolved: perf: Avoid undefined behavior from stopping/starting inactive events Calling pmu-start/stop on perf events in PERFEVENTSTATEOFF can leave event-hw.idx at -1. When PMU drivers later attempt to use this negative index as a shift...

CVE-2025-39821 perf: Avoid undefined behavior from stopping/starting inactive events

In the Linux kernel, the following vulnerability has been resolved: perf: Avoid undefined behavior from stopping/starting inactive events Calling pmu-start/stop on perf events in PERFEVENTSTATEOFF can leave event-hw.idx at -1. When PMU drivers later attempt to use this negative index as a shift...

CVE-2025-39821

CVE-2025-39821 (Linux kernel perf - UBSAN risk) The issue is a logic flaw in perf event throttling where a group’s disabled member in PERF_EVENT_STATE_OFF could be throttle-started/stoppped, causing PMU drivers to receive an event with hw.idx = -1. This negative index is used as a shift exponent ...

CVE-2025-39821 perf: Avoid undefined behavior from stopping/starting inactive events

In the Linux kernel, the following vulnerability has been resolved: perf: Avoid undefined behavior from stopping/starting inactive events Calling pmu-start/stop on perf events in PERFEVENTSTATEOFF can leave event-hw.idx at -1. When PMU drivers later attempt to use this negative index as a shift...