Answer in brief
CVE-2026-53123 records a Unknown severity vulnerability in md: wake raid456 reshape waiters before suspend. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=714d20150ed85811193ae07a494d91f9927c590f <8b6a72420821e6da2cab6a69d5233500d2698b93 || >=714d20150ed85811193ae07a494d91f9927c590f <ff6b93410192b812d73cc54062529715b2dc849f || >=714d20150ed85811193ae07a494d91f9927c590f <8ae3e14d7f3df58f7f49c02d74344e3dcd5f84f0 || >=714d20150ed85811193ae07a494d91f9927c590f <cf86bb53b9c92354904a328e947a05ffbfdd1840 || 2284eab166f2df83f94f0422e15dc9e73b278abf || >=6.6.160 <6.7 | 8b6a72420821e6da2cab6a69d5233500d2698b93, ff6b93410192b812d73cc54062529715b2dc849f, 8ae3e14d7f3df58f7f49c02d74344e3dcd5f84f0, cf86bb53b9c92354904a328e947a05ffbfdd1840, 6.7 |
| Linux/Linuxgeneric | 6.7 | Not reported |
Published upstream
Jun 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 24, 2026
In the Linux kernel, the following vulnerability has been resolved: md: wake raid456 reshape waiters before suspend During raid456 reshape, direct IO across the reshape position can sleep in raid5_make_request() waiting for reshape progress while still holding an active_io reference. If userspace then freezes reshape and writes md/suspend_lo or md/suspend_hi, mddev_suspend() kills active_io and waits for all in-flight IO to drain. This can deadlock: the IO needs reshape progress to continue, but the reshape thread is already frozen, so the active_io reference is never dropped and suspend never completes. raid5_prepare_suspend() already wakes wait_for_reshape for dm-raid. Do the same for normal md suspend when reshape is already interrupted, so waiting raid456 IO can abort, drop its reference, and let suspend finish. The mdadm test tests/25raid456-reshape-deadlock reproduces the hang.
Quoted source text, attributed separately from HOL analysis.