Answer in brief
CVE-2026-90420 records a Unknown severity vulnerability in nilfs2: fix infinite loop in nilfs_clean_segments(). 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 | >=9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 <e3e9367dae1a6392cbb14ab0b2ab5edbf39735c3 || >=9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 <217b967ad7887a3e1ebc08f46f6484e081acd4b4 || >=9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 <3bcdbdaac884a4baa59716cf9bd9470c75276e2d || >=9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 <d7afca8e4efbf4c455b4663c29ae59fde2f1b671 || >=9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 <c07e5ad6539e7e9350d5c65cbf8adb69d1711b15 || >=9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 <1fc6df85b4954b6fda9c351843aaca3c06f66d8d || >=9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 <8cea0bc78ac64cb88da49c07f80bf2cf9fb7aff8 || >=9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 <ce5a5ad1a8330a2fcfdd9ec2ab341be739e89a18 | e3e9367dae1a6392cbb14ab0b2ab5edbf39735c3, 217b967ad7887a3e1ebc08f46f6484e081acd4b4, 3bcdbdaac884a4baa59716cf9bd9470c75276e2d, d7afca8e4efbf4c455b4663c29ae59fde2f1b671, c07e5ad6539e7e9350d5c65cbf8adb69d1711b15, 1fc6df85b4954b6fda9c351843aaca3c06f66d8d, 8cea0bc78ac64cb88da49c07f80bf2cf9fb7aff8, ce5a5ad1a8330a2fcfdd9ec2ab341be739e89a18 |
| Linux/Linuxgeneric | 2.6.30 | Not reported |
Published upstream
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 17, 2026
In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix infinite loop in nilfs_clean_segments() syzbot reported a hung task in nilfs_transaction_begin(). This occurs because the cleaner ioctl falls into an infinite loop if nilfs_segctor_construct() repeatedly returns -EROFS (e.g. the device is remounted as read-only after an I/O error). Currently in nilfs_clean_segments(), if err is non-zero, it logs the error and sleeps but doesn't abort when it encounters a terminal error like -EROFS. This causes the thread to loop forever. Fix this by breaking out of the loop if nilfs_segctor_construct() returns -EROFS. This matches the behaviour in nilfs_segctor_write_out(), which also handles -EROFS.
Quoted source text, attributed separately from HOL analysis.