CVE-2026-89818ModerateLocalRevised 21 Oct

drm/amdgpu/vcn: fix integer overflow in dec_msg buffer count check

MSRC advisory NVD CVE.org

Assessment

Severity: Moderate
CVSS base score: 7.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H/E:U
Impact: Not stated
EPSS · 30-day forecast: No EPSS score collected
Public detection template: No Nuclei template is listed in the current collected catalog
Exploitation detected: Unknown: not stated by MSRC
Exploitability: Not assessed
Publicly disclosed: Unknown: not stated by MSRC
Customer action: Required: follow the MSRC remediation guidance
Component: Mariner
Weakness: —
Issued by: Linux
Published: 17 Sep 2026 · September 2026
Last revised: 21 Oct 2026Information published.

CVSS 3.1 base metricsRed raises the risk · green lowers it

Attack vector: LocalAV:L
Attack complexity: LowAC:L
Privileges required: LowPR:L
User interaction: NoneUI:N
Scope: UnchangedS:U
Confidentiality: HighC:H
Integrity: NoneI:N
Availability: HighA:H

Updates that fix it

0 KBs

No KB listed

No KB update is listed in the collected MSRC record. Check the MSRC advisory for product releases and other remedies.

Affected products

Open Source Software

2 affected products

azl3 kernel 6.6.150.1-1 on Azure Linux 3.0
azl3 kernel 6.6.152.1-1 on Azure Linux 3.0

What changed

Detection template: Unknown: detection-template evidence is incomplete or retained → No Nuclei template listed
6 Nov 2026 · 17:32:22 UTC
Detection template: No Nuclei template listed → Unknown: detection-template evidence is incomplete or retained
6 Nov 2026 · 16:31:02 UTC
Detection template: Unknown: detection-template evidence is incomplete or retained → No Nuclei template listed
2 Nov 2026 · 17:30:39 UTC
Detection template: No Nuclei template listed → Unknown: detection-template evidence is incomplete or retained
2 Nov 2026 · 16:27:39 UTC
Detection template: No Nuclei template listed · Customer action: Required: apply the update → Required: follow the MSRC remediation guidance · Public disclosure: No → Unknown: not stated by MSRC · Exploitation detected: Not reported by MSRC → Unknown: not stated by MSRC
29 Oct 2026
Detection template: Unknown: exploit-code evidence is incomplete or retained → No Nuclei template listed · CISA KEV: Unknown: catalog evidence is incomplete or retained → Not listed in the collected catalog
23 Oct 2026 · 09:33:49 UTC
Detection template: No Nuclei template listed → Unknown: exploit-code evidence is incomplete or retained · CISA KEV: Not listed in the collected catalog → Unknown: catalog evidence is incomplete or retained
23 Oct 2026 · 08:31:50 UTC

Page history

Changes are dated when recorded; day views use the last saved version from that UTC day, and citations stay fixed.

Cite this version

Field-level log (36)

Up to 100 recent field edits are shown; older edits may be outside retention.

6 Nov 2026 · 17:32:22 UTC Public detection templateUnknown: detection-template evidence is incomplete or retained → No Nuclei template listed
6 Nov 2026 · 17:32:22 UTC Source coverage: public-exploit-codeIncomplete → Current
6 Nov 2026 · 17:32:22 UTC Source coverage: first-epssIncomplete → Current
6 Nov 2026 · 17:32:22 UTC Source coverage: msrc-cvrfIncomplete → Current
6 Nov 2026 · 16:31:02 UTC Public detection templateNo Nuclei template listed → Unknown: detection-template evidence is incomplete or retained
6 Nov 2026 · 16:31:02 UTC Source coverage: public-exploit-codeCurrent → Incomplete
6 Nov 2026 · 16:31:02 UTC Source coverage: first-epssCurrent → Incomplete
6 Nov 2026 · 16:31:02 UTC Source coverage: msrc-cvrfCurrent → Incomplete
2 Nov 2026 · 17:30:39 UTC Public detection templateUnknown: detection-template evidence is incomplete or retained → No Nuclei template listed
2 Nov 2026 · 17:30:39 UTC Source coverage: public-exploit-codeIncomplete → Current
2 Nov 2026 · 17:30:39 UTC Source coverage: first-epssIncomplete → Current
2 Nov 2026 · 17:30:39 UTC Source coverage: msrc-cvrfIncomplete → Current
2 Nov 2026 · 16:27:39 UTC Public detection templateNo Nuclei template listed → Unknown: detection-template evidence is incomplete or retained
2 Nov 2026 · 16:27:39 UTC Source coverage: public-exploit-codeCurrent → Incomplete
2 Nov 2026 · 16:27:39 UTC Source coverage: first-epssCurrent → Incomplete
2 Nov 2026 · 16:27:39 UTC Source coverage: msrc-cvrfCurrent → Incomplete
29 Oct 2026 · 20:19:26 UTC Public detection templateNo Nuclei template listed
29 Oct 2026 · 20:19:26 UTC EPSSNot scored → No EPSS score collected
29 Oct 2026 · 20:19:26 UTC Customer actionRequired: apply the update → Required: follow the MSRC remediation guidance
29 Oct 2026 · 20:19:26 UTC Publicly disclosedNo → Unknown: not stated by MSRC
29 Oct 2026 · 20:19:26 UTC Exploitation detectedNot reported by MSRC → Unknown: not stated by MSRC
23 Oct 2026 · 09:33:49 UTC Public exploit codeUnknown: exploit-code evidence is incomplete or retained → No Nuclei template listed
23 Oct 2026 · 09:33:49 UTC CISA KEVUnknown: catalog evidence is incomplete or retained → Not listed in the collected catalog
23 Oct 2026 · 09:33:49 UTC Source coverage: public-exploit-codeIncomplete → Current
23 Oct 2026 · 09:33:49 UTC Source coverage: first-epssIncomplete → Current
23 Oct 2026 · 09:33:49 UTC Source coverage: cisa-kevIncomplete → Current
23 Oct 2026 · 09:33:49 UTC Source coverage: msrc-cvrfIncomplete → Current
23 Oct 2026 · 08:31:50 UTC Public exploit codeNo Nuclei template listed → Unknown: exploit-code evidence is incomplete or retained
23 Oct 2026 · 08:31:50 UTC CISA KEVNot listed in the collected catalog → Unknown: catalog evidence is incomplete or retained
23 Oct 2026 · 08:31:50 UTC Source coverage: public-exploit-codeCurrent → Incomplete
23 Oct 2026 · 08:31:50 UTC Source coverage: first-epssCurrent → Incomplete
23 Oct 2026 · 08:31:50 UTC Source coverage: cisa-kevCurrent → Incomplete
23 Oct 2026 · 08:31:50 UTC Source coverage: msrc-cvrfCurrent → Incomplete
21 Oct 2026 · 20:45:25 UTC Last revised2 Oct 2026 02:13 UTC → 21 Oct 2026 18:39 UTC
18 Oct 2026 · 14:54:30 UTC Link: September 2026/security?release=2026-Sep#cves
14 Oct 2026 · 11:22:42 UTC Source coverage: msrc-cvrfIncomplete → Current

Explore global source statements, affected packages and advisory history for CVE-2026-89818. The catalog has a separate collection scope from Microsoft release records.

cve-program · CVE-2026-89818

Published

Linux

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c",
                        "drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c"
                    ],
                    "versions": [
                        {
                            "version": "88411caee8f576d6b5abf6531232fcc0ce756dc5",
                            "lessThan": "c2340281be4ddacb8c203e2bce59b126d1d6c4c8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c72a8b4dc6d598e3831ef3abd9c6527dfbf4810e",
                            "lessThan": "6dceaeceaa7c8396339f3ea34b0110cb912ca61b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7688143ca62edeecacb3ba0a2cea129dbd262a18",
                            "lessThan": "47799e1f893d47d8af231710a61065e3ec8a13e8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "63b51e8a9d54317d31cc3856c1e12407070d5fc2",
                            "lessThan": "7e28853c78c20bb8ba4c1dba702430cd05e09f76",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b193019860d61e92da395eae2011f2f6716b182f",
                            "lessThan": "9ae19bd60891bea0a7b7504cc8dbfe74570ac3b3",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b193019860d61e92da395eae2011f2f6716b182f",
                            "lessThan": "4d7390530853eb7befda9cc786e4c86e8ad7ac9e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f55552adb100eb54a6e6dabff4fbdc8679bd3fa0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "82c535eff05490c71153af57de9fe85502fcb5d5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "638d3e0b9eb77aa53fdd60e2b928761d16ba76fa",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "870c8738c3774336baedddd0240951d078a703b8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "638e48ee39d0f2af9336f917a6f5d6692dd64d93",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e382e0b81a3e7bd21504fee1d01ae8b08f84d3a7",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3c817a60b09eaab926e475088e750936efcc95ae",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6.1.175",
                            "lessThan": "6.1.188",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.140",
                            "lessThan": "6.6.157",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.90",
                            "lessThan": "6.12.110",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.32",
                            "lessThan": "6.18.51",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.209",
                            "lessThan": "5.16",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0.9",
                            "lessThan": "7.1",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                }

Linux

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c",
                        "drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c"
                    ],
                    "versions": [
                        {
                            "version": "7.1",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "7.1",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.188",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.157",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.110",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.51",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.5",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON