CVE-2026-74306
vfio/qat: fix f_pos race in qat_vf_resume_write()
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: vfio/qat: fix f_pos race in qat_vf_resume_write() qat_vf_resume_write() checks filp->f_pos before taking migf->lock, but copies into the migration-state buffer after taking the lock and re-reading the shared file position. Two concurrent writers could therefore pass the bounds check with the old offset, then have the second writer copy after the first advanced f_pos, writing past the end of the migration-state buffer. Take migf->lock before doing the boundary checks.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Aug 15, 2026 |
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Affected Versions
Linux / Linux
bb208810b1abf1c84870cfbe1cc9cf1a1d35c607 < 6465af0004dc1b067129a26ef44f19cdf13bbce6 bb208810b1abf1c84870cfbe1cc9cf1a1d35c607 < d416dcefdbac90d96b22485fd93f28229ad9984b bb208810b1abf1c84870cfbe1cc9cf1a1d35c607 < b6fd7a40a66485c8aa8156d8fcf50b95cb8ba281 bb208810b1abf1c84870cfbe1cc9cf1a1d35c607 < 4ec5e932e636896e97e4c6a8205b0ac76d52421a
Linux / Linux
6.10
References
git.kernel.org: https://git.kernel.org/stable/c/6465af0004dc1b067129a26ef44f19cdf13bbce6 git.kernel.org: https://git.kernel.org/stable/c/d416dcefdbac90d96b22485fd93f28229ad9984b git.kernel.org: https://git.kernel.org/stable/c/b6fd7a40a66485c8aa8156d8fcf50b95cb8ba281 git.kernel.org: https://git.kernel.org/stable/c/4ec5e932e636896e97e4c6a8205b0ac76d52421a