CVE-2026-45974
Published May 27, 2026
Modified May 27, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix invalid leaf access in btrfs_quota_enable() if ref key not found If btrfs_search_slot_for_read() returns 1, it means we did not find any key greater than or equals to the key we asked for, meaning we have reached the end of the tree and therefore the path is not valid. If this happens we need to break out of the loop and stop, instead of continuing and accessing an invalid path.
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EPSS — Exploit Prediction
0.0013
Probability of exploitation
0.03%
Percentile rank
EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.
References
Other References
https://git.kernel.org/stable/c/023545e272f369d487e6a986c1e321c6e04be1da
https://git.kernel.org/stable/c/0761447f6f51e1c7997960d8e6559337deed6729
https://git.kernel.org/stable/c/1ee1d006c9fe4d6be5527ab1c84216b80cccbe40
https://git.kernel.org/stable/c/b2bd557b75b760e4b9d209112bda19314bd64558
https://git.kernel.org/stable/c/b5b8ade9da452086e78f5d519b90d3769e354853
https://git.kernel.org/stable/c/d7cf2314dd5e8661c05d076cd627eea9a7f76616
https://git.kernel.org/stable/c/ecb7c2484cfc83a93658907580035a8adf1e0a92
https://git.kernel.org/stable/c/fd4913a53e3b54ad7e161847291439fe445d6356
Frequently Asked Questions
What is CVE-2026-45974? +
In the Linux kernel, the following vulnerability has been resolved:
btrfs: fix invalid leaf access in btrfs_quota_enable() if ref key not found
If btrfs_search_slot_for_read() returns 1, it means we did not find any
key greater than or equals to the key we asked for, meaning we have
reached the end of the tree and therefore the path is not valid. If
this happens we need to break out of the loop and stop, instead of
continuing and accessing an invalid path.
How do I check if I'm vulnerable to CVE-2026-45974? +
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.