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NVD / CVE Program· CNA Linux

CVE-2026-89811: drm/amdkfd: Add TLB flush after MES queue eviction/suspension

HighCVSS 8.8 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 35/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.17% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 5bbd7f283312d0209a0fedcc9d2d33b5afa5a7b1, 6aae545c87087e4dc96e205452243813bfa73ba2, 750cd793ee69c27faf17fb9c49f92f71716bbc8b; azl3 kernel 6.6.152.1-1 on Azure Linux 3.0 Release Notes; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 Release Notes.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 5bbd7f283312d0209a0fedcc9d2d33b5afa5a7b1, 6aae545c87087e4dc96e205452243813bfa73ba2, 750cd793ee69c27faf17fb9c49f92f71716bbc8b; azl3 kernel 6.6.152.1-1 on Azure Linux 3.0 Release Notes; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 Release Notes or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Add TLB flush after MES queue eviction/suspension MES (Micro Engine Scheduler) does not perform heavy-weight TLB invalidation after unmapping queues, unlike HWS which does this automatically. This causes a race condition where in-flight DMA descriptors can access memory that has been unmapped, leading to page faults and GPU queue hangs during SVM page migration. The issue manifests as KFDSVMRangeTest.MultiThreadMigrationTest failures on gfx1151 (Strix Point) with XNACK mode 1 enabled - the GPU compute queue hangs with packets submitted but never consumed. Add kfd_flush_tlb() calls after MES queue removal in two locations: - evict_process_queues_cpsch(): after all queues removed during eviction - suspend_queues(): after debug/criu queue suspension (with mem_fence barrier) This ensures all in-flight memory accesses from unmapped queues are flushed before memory is freed or migrated. (cherry picked from commit f5c4f88e0f9c45a8fb9dfac0c1df726c95e41b77)

Published
Sep 16, 2026
Updated
Oct 30, 2026
EPSS
0.1% · 7th percentile
CWE
—

Report tools

JSON

Action score

35

Monitor

Low priority for now.

CVSS
35 / 40 · 8.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CNA vs NVD score

NVD
—
CNA · Linux
8.8
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 5.19affected
    • cc009e613de6560eb499f8bc92c80a737752cb30 and later · before 750cd793ee69c27faf17fb9c49f92f71716bbc8baffected · git
    • cc009e613de6560eb499f8bc92c80a737752cb30 and later · before 5bbd7f283312d0209a0fedcc9d2d33b5afa5a7b1affected · git
    • cc009e613de6560eb499f8bc92c80a737752cb30 and later · before bbf5ad5268f36d7ebb7e99ae78fc73cffe98d372affected · git
    • cc009e613de6560eb499f8bc92c80a737752cb30 and later · before e230c546ed93741833ab5babb0b202f9c2052b45affected · git
    • cc009e613de6560eb499f8bc92c80a737752cb30 and later · before 6aae545c87087e4dc96e205452243813bfa73ba2affected · git
    • cc009e613de6560eb499f8bc92c80a737752cb30 and later · before 94e25cb6ab7f4f025bcdcd8ea79fda30f12843a4affected · git
    • before 5.19not affected · semver
    • 6.1.191 and later · up to and including 6.1.*not affected · semver
    • 6.6.160 and later · up to and including 6.6.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:10kernelbefore 6.12.0-211.68.1.el10_26.12.0-211.68.1.el10_2
AlmaLinux:10kernel-64kbefore 6.12.0-211.68.1.el10_26.12.0-211.68.1.el10_2
AlmaLinux:10kernel-64k-corebefore 6.12.0-211.68.1.el10_26.12.0-211.68.1.el10_2
AlmaLinux:10kernel-64k-debugbefore 6.12.0-211.68.1.el10_26.12.0-211.68.1.el10_2
AlmaLinux:10kernel-64k-debug-corebefore 6.12.0-211.68.1.el10_26.12.0-211.68.1.el10_2
AlmaLinux:10kernel-64k-debug-develbefore 6.12.0-211.68.1.el10_26.12.0-211.68.1.el10_2
AlmaLinux:10kernel-64k-debug-devel-matchedbefore 6.12.0-211.68.1.el10_26.12.0-211.68.1.el10_2
AlmaLinux:10kernel-64k-debug-modulesbefore 6.12.0-211.68.1.el10_26.12.0-211.68.1.el10_2
AlmaLinux:10kernel-64k-debug-modules-corebefore 6.12.0-211.68.1.el10_26.12.0-211.68.1.el10_2
AlmaLinux:10kernel-64k-debug-modules-extrabefore 6.12.0-211.68.1.el10_26.12.0-211.68.1.el10_2
AlmaLinux:10kernel-64k-develbefore 6.12.0-211.68.1.el10_26.12.0-211.68.1.el10_2
AlmaLinux:10kernel-64k-devel-matchedbefore 6.12.0-211.68.1.el10_26.12.0-211.68.1.el10_2
AlmaLinux:10kernel-64k-modulesbefore 6.12.0-211.68.1.el10_26.12.0-211.68.1.el10_2
AlmaLinux:10kernel-64k-modules-corebefore 6.12.0-211.68.1.el10_26.12.0-211.68.1.el10_2
AlmaLinux:10kernel-64k-modules-extrabefore 6.12.0-211.68.1.el10_26.12.0-211.68.1.el10_2
AlmaLinux:10kernel-abi-stablelistsbefore 6.12.0-211.68.1.el10_26.12.0-211.68.1.el10_2
AlmaLinux:10kernel-corebefore 6.12.0-211.68.1.el10_26.12.0-211.68.1.el10_2
AlmaLinux:10kernel-cross-headersbefore 6.12.0-211.68.1.el10_26.12.0-211.68.1.el10_2
AlmaLinux:10kernel-debugbefore 6.12.0-211.68.1.el10_26.12.0-211.68.1.el10_2
AlmaLinux:10kernel-debug-corebefore 6.12.0-211.68.1.el10_26.12.0-211.68.1.el10_2
AlmaLinux:10kernel-debug-develbefore 6.12.0-211.68.1.el10_26.12.0-211.68.1.el10_2
AlmaLinux:10kernel-debug-devel-matchedbefore 6.12.0-211.68.1.el10_26.12.0-211.68.1.el10_2
AlmaLinux:10kernel-debug-modulesbefore 6.12.0-211.68.1.el10_26.12.0-211.68.1.el10_2
AlmaLinux:10kernel-debug-modules-corebefore 6.12.0-211.68.1.el10_26.12.0-211.68.1.el10_2

+96

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-89809Sep 16, 2026 · drm/amdkfd: fix scope of mqd_mgr dereference in pqm_debugfs_mqds
    0Monitor
  • ← EarlierCVE-2026-89810Sep 16, 2026 · drm/amdkfd: Fix error path at svm_migrate_copy_to_ram
    31Monitor
  • Later →CVE-2026-89812Sep 16, 2026 · drm/amdgpu: force complete the MES ring fences on reset
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux5bbd7f283312d0209a0fedcc9d2d33b5afa5a7b1Vendor (CNA)
Linux Linux6aae545c87087e4dc96e205452243813bfa73ba2Vendor (CNA)
Linux Linux750cd793ee69c27faf17fb9c49f92f71716bbc8bVendor (CNA)
Linux Linux94e25cb6ab7f4f025bcdcd8ea79fda30f12843a4Vendor (CNA)
Linux Linuxbbf5ad5268f36d7ebb7e99ae78fc73cffe98d372Vendor (CNA)
Linux Linuxe230c546ed93741833ab5babb0b202f9c2052b45Vendor (CNA)
azl3 kernel 6.6.150.1-1 on Azure Linux 3.0—Microsoft (MSRC)
azl3 kernel 6.6.152.1-1 on Azure Linux 3.0Release NotesMicrosoft (MSRC)
azl3 kernel 6.6.157.1-1 on Azure Linux 3.0Release NotesMicrosoft (MSRC)
azl3 kernel 6.6.159.1-1 on Azure Linux 3.06.6.161.1-1 · Release NotesMicrosoft (MSRC)
almalinux:bpftool4.18.0-553.173.1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel4.18.0-553.173.1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel5.14.0-687.57.1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k5.14.0-687.57.1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-core5.14.0-687.57.1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug5.14.0-687.57.1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-core5.14.0-687.57.1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules5.14.0-687.57.1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-core5.14.0-687.57.1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-extra5.14.0-687.57.1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-modules5.14.0-687.57.1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-modules-core5.14.0-687.57.1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-modules-extra5.14.0-687.57.1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-abi-stablelists5.14.0-687.57.1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-rt4.18.0-553.173.1.rt7.514.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-rt-core4.18.0-553.173.1.rt7.514.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-rt-debug4.18.0-553.173.1.rt7.514.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-rt-debug-core4.18.0-553.173.1.rt7.514.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-rt-debug-devel4.18.0-553.173.1.rt7.514.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-rt-debug-modules4.18.0-553.173.1.rt7.514.el8_10 · AlmaLinux:8Package registry (OSV)

+20

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Not on record for this CVE: patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted

Impact can extend beyond the vulnerable component (scope changes).

Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Changed
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

—

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

References

Show all references (5 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records