CVE-2026-64357
xfs: fix exchmaps reservation limit check
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: xfs: fix exchmaps reservation limit check xfs_exchmaps_estimate_overhead() adds the bmbt and rmapbt overhead to a local resblks variable, but the final UINT_MAX check still tests req->resblks. That is the reservation value from before the overhead was added. The computed value is stored back in req->resblks and later passed to xfs_trans_alloc(), whose block reservation argument is unsigned int. Check the computed reservation so the existing limit applies to the value that will be used.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Jul 25, 2026 |
Stay Ahead of the Next One
Get instant alerts for linux linux
Be the first to know when new unknown vulnerabilities affecting linux linux are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
Affected Versions
Linux / Linux
966ceafc7a437105ecfe1cadb3747b2965a260ca < c597c8580d50127fc1221b5a5b653a94d49e23e3 966ceafc7a437105ecfe1cadb3747b2965a260ca < a62ef2d13d6e7270dd5e88c6082bf2d0edcd5112 966ceafc7a437105ecfe1cadb3747b2965a260ca < 4707344b0d36d1012c8a1716e20167cd3afdd5f1 966ceafc7a437105ecfe1cadb3747b2965a260ca < 0a5213bbff62b51c7d4999ac8c7e11ea57d00d45
Linux / Linux
6.10
References
git.kernel.org: https://git.kernel.org/stable/c/c597c8580d50127fc1221b5a5b653a94d49e23e3 git.kernel.org: https://git.kernel.org/stable/c/a62ef2d13d6e7270dd5e88c6082bf2d0edcd5112 git.kernel.org: https://git.kernel.org/stable/c/4707344b0d36d1012c8a1716e20167cd3afdd5f1 git.kernel.org: https://git.kernel.org/stable/c/0a5213bbff62b51c7d4999ac8c7e11ea57d00d45