CVE-2023-53429

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

I

n 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.

References

Link	Resource
https://git.kernel.org/stable/c/3e92499e3b004baffb479d61e191b41b604ece9a	Patch
https://git.kernel.org/stable/c/d40be032ecd8ee1ca033bee43c7755d21fb4d72a	Patch

Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

History

11 Dec 2025, 15:29

Type	Values Removed	Values Added
First Time		Linux linux Kernel Linux
CWE		NVD-CWE-noinfo
References	~~() https://git.kernel.org/stable/c/3e92499e3b004baffb479d61e191b41b604ece9a -~~	() https://git.kernel.org/stable/c/3e92499e3b004baffb479d61e191b41b604ece9a - Patch
References	~~() https://git.kernel.org/stable/c/d40be032ecd8ee1ca033bee43c7755d21fb4d72a -~~	() https://git.kernel.org/stable/c/d40be032ecd8ee1ca033bee43c7755d21fb4d72a - Patch
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.5
CPE		cpe:2.3:o:linux:linux_kernel::::::::

19 Sep 2025, 16:00

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-09-18 16:15

Updated : 2026-01-14 20:16

NVD link : CVE-2023-53429

Mitre link : CVE-2023-53429

CVE.ORG link : CVE-2023-53429

JSON object : View

Products Affected

linux_kernel

CWE

NVD-CWE-noinfo

{"id": "CVE-2023-53429", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "[email protected]", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2025-09-18T16:15:46.847", "references": [{"url": "https://git.kernel.org/stable/c/3e92499e3b004baffb479d61e191b41b604ece9a", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d40be032ecd8ee1ca033bee43c7755d21fb4d72a", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "[email protected]", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: don't check PageError in __extent_writepage\n\n__extent_writepage currenly sets PageError whenever any error happens,\nand the also checks for PageError to decide if to call error handling.\nThis leads to very unclear responsibility for cleaning up on errors.\nIn the VM and generic writeback helpers the basic idea is that once\nI/O is fired off all error handling responsibility is delegated to the\nend I/O handler. But if that end I/O handler sets the PageError bit,\nand the submitter checks it, the bit could in some cases leak into the\nsubmission context for fast enough I/O.\n\nFix this by simply not checking PageError and just using the local\nret variable to check for submission errors. This also fundamentally\nsolves the long problem documented in a comment in __extent_writepage\nby never leaking the error bit into the submission context."}], "lastModified": "2026-01-14T20:16:02.293", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "565551D3-65F9-4062-91B4-52D139D5ACAD", "versionEndExcluding": "6.4.7"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}