Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
Linux Linux — btrfs: don't check PageError in __extent_writepage
AV AC PR UI S C I A CVSS EPSS %ile KEV
L L L N U N N H 5.5 .0013 3.4 —
AFFECTED
Product Versions Fixed
Linux 61391d562229ed94899ed4b4973dc2f0c015292a – —
Linux 3.16 – 6.4.7
TIMELINE
Sep 17 Reserved by Linux
Sep 18 Published (CNA: Linux)
Aug 4 RESCORED — CVE-2023-53429 (Linux). CVSS 7.8 → 5.5 (NVD).
Description
In the Linux kernel, the following vulnerability has been resolved:
btrfs: don't check PageError in __extent_writepage
__extent_writepage currenly sets PageError whenever any error happens,
and the also checks for PageError to decide if to call error handling.
This leads to very unclear responsibility for cleaning up on errors.
In the VM and generic writeback helpers the basic idea is that once
I/O is fired off all error handling responsibility is delegated to the
end I/O handler. But if that end I/O handler sets the PageError bit,
and the submitter checks it, the bit could in some cases leak into the
submission context for fast enough I/O.
Fix this by simply not checking PageError and just using the local
ret variable to check for submission errors. This also fundamentally
solves the long problem documented in a comment in __extent_writepage
by never leaking the error bit into the submission context.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
| September 17, 2025 | Reserved | Reserved by Linux |
| September 18, 2025 | Published | Published (CNA: Linux) |
| August 4, 2026 | RESCORED | RESCORED — CVE-2023-53429 (Linux). CVSS 7.8 → 5.5 (NVD). |
Affected
Affected products and packages — 2 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
| Linux | Linux | — | 61391d562229ed94899ed4b4973dc2f0c015292a | — |
| Linux | Linux | — | 3.16 | 6.4.7 |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2023-53429 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.