CVE-2026-72370
iomap: release pages on atomic dio size mismatch
Description
In the Linux kernel, the following vulnerability has been resolved: iomap: release pages on atomic dio size mismatch If bio_iov_iter_get_pages() or the bounce helper succeeds but builds a short bio, the REQ_ATOMIC size check rejects it before submission. The old error path only dropped the bio reference, leaving any pages already attached to the bio unreleased. Release or unbounce the pages before falling through to out_put_bio on this error path. This bug was reported by sashiko: https://sashiko.dev/#/patchset/20260608073134.95964-1-changfengnan%40bytedance.com
INFO
Published Date :
Aug. 15, 2026, 6:22 a.m.
Last Modified :
Aug. 17, 2026, 6:18 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Release attached pages on error path.
- Unbounce pages on error path.
- Ensure pages are released/unbounded before falling through.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-72370.
| URL | Resource |
|---|---|
| https://git.kernel.org/stable/c/27ddd3442fc6f698fb8577c7cfb243ddd81ea8c0 | |
| https://git.kernel.org/stable/c/681e452683b69a8e1a571cba0f238f8ceacf55d2 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-72370 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-72370
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-72370 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-72370 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 17, 2026
Action Type Old Value New Value Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '9e0933c21c128d6d8ac4d8aae0babaf9a43100b8', 'lessThan': '27ddd3442fc6f698fb8577c7cfb243ddd81ea8c0', 'versionType': 'git'}, {'status': 'affected', 'version': '9e0933c21c128d6d8ac4d8aae0babaf9a43100b8', 'lessThan': '681e452683b69a8e1a571cba0f238f8ceacf55d2', 'versionType': 'git'}], 'programFiles': ['fs/iomap/direct-io.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.13'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.13', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['fs/iomap/direct-io.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '9e0933c21c128d6d8ac4d8aae0babaf9a43100b8', 'lessThan': '27ddd3442fc6f698fb8577c7cfb243ddd81ea8c0', 'versionType': 'git'}, {'status': 'affected', 'version': '9e0933c21c128d6d8ac4d8aae0babaf9a43100b8', 'lessThan': '681e452683b69a8e1a571cba0f238f8ceacf55d2', 'versionType': 'git'}], 'programFiles': ['fs/iomap/direct-io.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.13'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.13', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['fs/iomap/direct-io.c'], 'defaultStatus': 'affected'}] -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 15, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '9e0933c21c128d6d8ac4d8aae0babaf9a43100b8', 'lessThan': '27ddd3442fc6f698fb8577c7cfb243ddd81ea8c0', 'versionType': 'git'}, {'status': 'affected', 'version': '9e0933c21c128d6d8ac4d8aae0babaf9a43100b8', 'lessThan': '681e452683b69a8e1a571cba0f238f8ceacf55d2', 'versionType': 'git'}], 'programFiles': ['fs/iomap/direct-io.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.13'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.13', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['fs/iomap/direct-io.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: iomap: release pages on atomic dio size mismatch If bio_iov_iter_get_pages() or the bounce helper succeeds but builds a short bio, the REQ_ATOMIC size check rejects it before submission. The old error path only dropped the bio reference, leaving any pages already attached to the bio unreleased. Release or unbounce the pages before falling through to out_put_bio on this error path. This bug was reported by sashiko: https://sashiko.dev/#/patchset/20260608073134.95964-1-changfengnan%40bytedance.com Added Reference https://git.kernel.org/stable/c/27ddd3442fc6f698fb8577c7cfb243ddd81ea8c0 Added Reference https://git.kernel.org/stable/c/681e452683b69a8e1a571cba0f238f8ceacf55d2