CVE-2026-45899
ext4: drop extent cache when splitting extent fails
Description
In the Linux kernel, the following vulnerability has been resolved: ext4: drop extent cache when splitting extent fails When the split extent fails, we might leave some extents still being processed and return an error directly, which will result in stale extent entries remaining in the extent status tree. So drop all of the remaining potentially stale extents if the splitting fails.
INFO
Published Date :
May 27, 2026, 2:17 p.m.
Last Modified :
May 27, 2026, 2:48 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Apply the kernel patch for ext4.
- Update the Linux kernel to the resolved version.
- Reboot the system after applying the update.
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-2026-45899.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-45899 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-2026-45899
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-2026-45899 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-45899 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
May. 27, 2026
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: ext4: drop extent cache when splitting extent fails When the split extent fails, we might leave some extents still being processed and return an error directly, which will result in stale extent entries remaining in the extent status tree. So drop all of the remaining potentially stale extents if the splitting fails. Added Reference https://git.kernel.org/stable/c/120c6bd7ca9d3e80a968b758cbb3fbd67570f132 Added Reference https://git.kernel.org/stable/c/31bf37cf53ede8145e2bc62da803d4506da92975 Added Reference https://git.kernel.org/stable/c/337506dc652383c80839edb8d8dcdd8ff2129b4f Added Reference https://git.kernel.org/stable/c/6e54f8dfee359bbd58086c883ea8cffd5312999d Added Reference https://git.kernel.org/stable/c/79b592e8f1b435796cbc2722190368e3e8ffd7a1 Added Reference https://git.kernel.org/stable/c/808f3191498f300174523c54cab101e18795ae4e Added Reference https://git.kernel.org/stable/c/dc7c9b9d03a59a7fe483574531327e650a4b4adc