CVE-2026-90434
isofs: release zisofs block pointer buffer head
Description
In the Linux kernel, the following vulnerability has been resolved: isofs: release zisofs block pointer buffer head zisofs_fill_pages() reads the compressed block pointer table. The error paths release the current buffer_head, the loop also releases the old buffer_head when it advances. However, the success path leaves the last buffer_head referenced. Release it before returning success.
INFO
Published Date :
Sept. 17, 2026, 5:17 p.m.
Last Modified :
Sept. 17, 2026, 5:17 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Release the last buffer_head before returning success.
- Ensure all error paths release the buffer_head.
- Verify buffer_head handling in zisofs_fill_pages.
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-2026-90434.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-90434 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-2026-90434
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-2026-90434 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-90434 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.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Sep. 17, 2026
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: isofs: release zisofs block pointer buffer head zisofs_fill_pages() reads the compressed block pointer table. The error paths release the current buffer_head, the loop also releases the old buffer_head when it advances. However, the success path leaves the last buffer_head referenced. Release it before returning success. Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/90xxx/CVE-2026-90434.json">CVE-2026-90434</a> Added Reference https://git.kernel.org/stable/c/0c2c54a7d174edc845f7bae24179fe72a926d10f Added Reference https://git.kernel.org/stable/c/106e1a3b2b3454fbda63a59e9290cb9a253f81aa Added Reference https://git.kernel.org/stable/c/2f7dd9b86fe4076059e6a4a2a2c5d565afd76b9e Added Reference https://git.kernel.org/stable/c/3371d30a97a257b7b5f2c8009612e9d452180f0a Added Reference https://git.kernel.org/stable/c/5677737c2cedf417c0fcf61540b9cef0e62273d4 Added Reference https://git.kernel.org/stable/c/dbcc7d1b818162aeab2e97fd217d86546d9fde15 Added Reference https://git.kernel.org/stable/c/ec33e6b7a1de20d7e623b12633191a855445657d Added Reference https://git.kernel.org/stable/c/f2a1611065c700a374b31c5cc8a7587f5e3bfe73