CVE-2026-89808
HIGH
MEDIUM
Priority: 0.01
BB Relevance:
41/100
Published: 2026-09-16
Modified: 2026-10-30
First seen: 2026-10-30
Status: active
Attack Surface
Low Complexity
No Interaction
Conf. Impact
Integ. Impact
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
High
I:
High
A:
High
Description
In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Fix the case that vm range is hole at svm_migrate_copy_to_vram When migration vm range is hole at cpu side(MIGRATE_PFN_MIGRATE set + MIGRATE_PFN_VALID unset) driver still allocates device pages. There is no dma map of src pages and migration. j is 0 and svm_migrate_copy_memory_gart() will return an uninitialized r. That can trigger out_free_vram_pages to drop all VRAM just set up. Initialize r and only call the last svm_migrate_copy_memory_gart if j > 0. Current code postponed the last page to the final copy. This patch flushes on the last page when reach to the end of current drm_buddy_block; avoids another svm_migrate_copy_memory_gart.
Affected Software (7)
| Vendor | Product | Version |
|---|---|---|
| Linux | Linux | 50ea50cf6f6d31d3235ad1853c5dbea766a3ed11 < d5872c81c70163a3ba9eb4da9a94c92b03067576 |
| Linux | Linux | 50ea50cf6f6d31d3235ad1853c5dbea766a3ed11 < 6e1a6f3ddb87d7f89a775c55fb399680c02bdcc2 |
| Linux | Linux | 50ea50cf6f6d31d3235ad1853c5dbea766a3ed11 < bd1adb2e5101db649121b59e601c92773a302a70 |
| Linux | Linux | 50ea50cf6f6d31d3235ad1853c5dbea766a3ed11 < ae806a95b28fcecb913430cfa45a252e91a945d6 |
| Linux | Linux | 50ea50cf6f6d31d3235ad1853c5dbea766a3ed11 < 0a9a0e8a97da70a0336c9115178aaf1be29bcfb1 |
| Linux | Linux | 50ea50cf6f6d31d3235ad1853c5dbea766a3ed11 < 520e345ffe05aabef1db82beda4288afb1757ff2 |
| Linux | Linux | 5.14 |