UNKNOWN NVD
CVE-2026-68240
In the Linux kernel, the following vulnerability has been resolved: drm/gpusvm: publish dpagemap early to avoid device mapping leak on error drm_gpusvm_get_pa
In the Linux kernel, the following vulnerability has been resolved:
drm/gpusvm: publish dpagemap early to avoid device mapping leak on error
drm_gpusvm_get_pages() only stored the local dpagemap into
svm_pages->dpagemap on the success path. If a later page failed (e.g.
-EOPNOTSUPP when ctx->allow_mixed is false) and jumped to err_unmap,
svm_pages->dpagemap was still NULL, so __drm_gpusvm_unmap_pages() skipped
device_unmap() and leaked the device mappings already created.
Assign svm_pages->dpagemap when the first device page is mapped so the
err_unmap path can device_unmap() those mappings.
This issue was found by Sashiko AI review.
References
- https://git.kernel.org/stable/c/72e4fca5529e45b5beebad79d804de442f632324
- https://git.kernel.org/stable/c/7f708f51e3955bda0d77a0b67ab9bea6c97fea99
- https://git.kernel.org/stable/c/e8362523fd1b61712f7d996802f9b5dee545c7e6
This unknown severity vulnerability was published on 2026-08-10 via NVD.
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