CVE-2026-45899
Published May 27, 2026
Modified May 27, 2026
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.
References
Other References
https://git.kernel.org/stable/c/120c6bd7ca9d3e80a968b758cbb3fbd67570f132
https://git.kernel.org/stable/c/31bf37cf53ede8145e2bc62da803d4506da92975
https://git.kernel.org/stable/c/337506dc652383c80839edb8d8dcdd8ff2129b4f
https://git.kernel.org/stable/c/6e54f8dfee359bbd58086c883ea8cffd5312999d
https://git.kernel.org/stable/c/79b592e8f1b435796cbc2722190368e3e8ffd7a1
https://git.kernel.org/stable/c/808f3191498f300174523c54cab101e18795ae4e
https://git.kernel.org/stable/c/dc7c9b9d03a59a7fe483574531327e650a4b4adc
Frequently Asked Questions
What is CVE-2026-45899? +
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.
How do I check if I'm vulnerable to CVE-2026-45899? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.