Answer in brief
CVE-2026-93269 records a Unknown severity vulnerability in ext4: fix circular lock dependency in ext4_ext_migrate. 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 | >=cb85f4d23f794e24127f3e562cb3b54b0803f456 <452950461241dfed8b1d32e94b227db38c99c5af || >=cb85f4d23f794e24127f3e562cb3b54b0803f456 <ada23457d4748d6e9c36c6f871fc29a6f558c48c || >=cb85f4d23f794e24127f3e562cb3b54b0803f456 <e4223231b6860141813637a6413c2371ae4d6fa8 || >=cb85f4d23f794e24127f3e562cb3b54b0803f456 <32f7ab52875ec7f800ca67e7176e5743a84baddf || >=cb85f4d23f794e24127f3e562cb3b54b0803f456 <a897682793eba5de51ee6f3152760374afa629cf || eb799e163dc2bc1ea0a4820b66f79d32a5e907df || bcc1eab71a67c46b9e24544ac7923f44444174ce || 8cf20fb73e73a4c4df0328b5297842c5ef34fdd9 || e5d25003d059649e18a249635ed5ca7a7b1de5ad || 69f8a7991fd93c49096ddd11574db3e7df238b7b || >=4.9.215 <4.10 || >=4.14.172 <4.15 || >=4.19.107 <4.20 || >=5.4.23 <5.5 || >=5.5.7 <5.6 | 452950461241dfed8b1d32e94b227db38c99c5af, ada23457d4748d6e9c36c6f871fc29a6f558c48c, e4223231b6860141813637a6413c2371ae4d6fa8, 32f7ab52875ec7f800ca67e7176e5743a84baddf, a897682793eba5de51ee6f3152760374afa629cf, 4.10, 4.15, 4.20, 5.5, 5.6 |
| Linux/Linuxgeneric | 5.6 | Not reported |
Published upstream
Sep 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 25, 2026
In the Linux kernel, the following vulnerability has been resolved: ext4: fix circular lock dependency in ext4_ext_migrate Move iput(tmp_inode) after ext4_writepages_up_write() to avoid a circular lock dependency between s_writepages_rwsem and sb_internal (freeze protection). The deadlock scenario: CPU0 (EXT4_IOC_MIGRATE) CPU1 (orphan cleanup during mount) ---- ---- ext4_ext_migrate() ext4_writepages_down_write() s_writepages_rwsem (write) ext4_evict_inode() sb_start_intwrite() [sb_internal] ... ext4_writepages() s_writepages_rwsem (read) [BLOCKED] iput(tmp_inode) ext4_evict_inode() sb_start_intwrite() [BLOCKED] The tmp_inode is a temporary inode with nlink=0 created solely for building the extent tree. Its eviction does not require s_writepages_rwsem protection, so deferring iput() until after releasing the rwsem is safe.
Quoted source text, attributed separately from HOL analysis.