CVEvulnerability
CVE-2026-53322
8.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2026-06-26
- Last modified
- 2026-09-09
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- 8.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- CVSS 3.1 (0b0ca135-0b70-47e7-9f44-1890c2a1c46c)
- 7.0 HIGH — CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-415, CWE-826
Description
In the Linux kernel, the following vulnerability has been resolved:
vfio/pci: Clean up DMABUFs before disabling function
On device shutdown, make vfio_pci_core_close_device() call
vfio_pci_dma_buf_cleanup() before the function is disabled via
vfio_pci_core_disable(). This ensures that all access via DMABUFs is
revoked before the function's BARs become inaccessible.
This fixes an issue where, if the function is disabled first, a tiny
window exists in which the function's MSE is cleared and yet BARs
could still be accessed via the DMABUF. The resources would also be
freed and up for grabs by a different driver.
Affected configurations
• linux linux kernel (>= 6.19 < 7.0.10)
Related
References
- https://git.kernel.org/stable/c/4f1000a30f67cf7d328059242776a858611d5ef9 Patch
- https://git.kernel.org/stable/c/d97708701434ce72968e771976aaf9d3438fcafd Patch
- https://access.redhat.com/errata/RHSA-2026:65334 access.redhat.com
- https://access.redhat.com/security/cve/CVE-2026-53322 Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2493709 Third Party Advisory
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53322.json Third Party Advisory