CVE-2026-45955 md/md-llbitmap: fix percpu_ref not resurrected on suspend timeout

In the Linux kernel, the following vulnerability has been resolved: md/md-llbitmap: fix percpuref not resurrected on suspend timeout When llbitmapsuspendtimeout times out waiting for percpuref to become zero, it returns -ETIMEDOUT without resurrecting the percpuref. The caller mdllbitmapdaemonfn...

CVE-2026-45955

Summary (CVE-2026-45955): In the Linux kernel, the md/md-llbitmap path suffers a logic error where llbitmap_suspend_timeout() times out waiting for percpu_ref to reach zero and returns -ETIMEDOUT without resurrecting percpu_ref. This leaves the page control structure in a killed state, potentiall...

CVE-2026-45955

In the Linux kernel, the following vulnerability has been resolved: md/md-llbitmap: fix percpuref not resurrected on suspend timeout When llbitmapsuspendtimeout times out waiting for percpuref to become zero, it returns -ETIMEDOUT without resurrecting the percpuref. The caller mdllbitmapdaemonfn...

CVE-2026-45953

In the Linux kernel, the following vulnerability has been resolved: md/raid5: fix IO hang with degraded array with llbitmap When llbitmap bit state is still unwritten, any new write should force rcw, as bitmapops-blockssynced is checked in handlestripedirtying. However, later the same check is...

CVE-2026-45953 md/raid5: fix IO hang with degraded array with llbitmap

In the Linux kernel, the following vulnerability has been resolved: md/raid5: fix IO hang with degraded array with llbitmap When llbitmap bit state is still unwritten, any new write should force rcw, as bitmapops-blockssynced is checked in handlestripedirtying. However, later the same check is...

CVE-2026-45953

CVE-2026-45953 affects the Linux kernel’s MD RAID5 subsystem. The root cause is a missing check in need_this_block() when an llbitmap bit is unwritten in a degraded array, which can cause stripe handling to deadlock and trigger an I/O hang (DoS-like impact). Public sources describe the issue and ...

CVE-2026-45955

md/md-llbitmap: fix percpuref not resurrected on suspend timeout...

CVE-2026-45953

md/raid5: fix IO hang with degraded array with llbitmap...

Linux kernel 安全漏洞

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 failure of the md/md-llbitmap to properly raise the barrier before state machine transitions,...

CVE-2026-46045

md/md-llbitmap: skip reading rdevs that are not insync...

PT-2026-43963

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A race condition exists in the md/md-llbitmap component. The issue occurs because the barrier raise operation is performed after the state machine transition. Specifically, in the llbitm...

CVE-2026-46095

md/md-llbitmap: raise barrier before state machine transition...

PT-2026-43820

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the md/raid5 component where a degraded array using llbitmap can experience an IO hang. When the llbitmap bit state remains unwritten, new writes should force a...

PT-2026-43822

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the md/md-llbitmap component where the llbitmap suspend timeout function returns -ETIMEDOUT upon timing out while waiting for percpu ref to reach zero, without...

Linux Distros Unpatched Vulnerability : CVE-2026-46095

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - md/md-llbitmap: raise barrier before state machine transition Move the barrier raise operation before calling llbitmapstatemachine in both llbitmapstartwrite an...

Linux kernel 安全漏洞

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 lack of a needthisblock check when the llbitmap bitmap status in the md/raid5 driver is not...