Description
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.
Metrics
CVSS 3.1 5.5/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HAffected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 966ceafc7a437105ecfe1cadb3747b2965a260ca, < c597c8580d50127fc1221b5a5b653a94d49e23e3; >= 966ceafc7a437105ecfe1cadb3747b2965a260ca, < a62ef2d13d6e7270dd5e88c6082bf2d0edcd5112; >= 966ceafc7a437105ecfe1cadb3747b2965a260ca, < 4707344b0d36d1012c8a1716e20167cd3afdd5f1; >= 966ceafc7a437105ecfe1cadb3747b2965a260ca, < 0a5213bbff62b51c7d4999ac8c7e11ea57d00d45 |
| Linux | Linux | 6.10 |
References
- https://git.kernel.org/stable/c/0a5213bbff62b51c7d4999ac8c7e11ea57d00d45Patch
- https://git.kernel.org/stable/c/4707344b0d36d1012c8a1716e20167cd3afdd5f1Patch
- https://git.kernel.org/stable/c/a62ef2d13d6e7270dd5e88c6082bf2d0edcd5112Patch
- https://git.kernel.org/stable/c/c597c8580d50127fc1221b5a5b653a94d49e23e3Patch
Timeline
- Published
- Jul 25, 2026
- Last modified
- Nov 6, 2026
- NVD status
- Analyzed