CVE-2026-98839LowLocalRevised 5 Nov

vt: selection: Fix unsigned underflow and slab-out-of-bounds read in paste_selection()

MSRC advisory NVD CVE.org

Assessment

Severity: Low
CVSS base score: 3.0CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:L
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: 20 Oct 2026 · October 2026
Last revised: 5 Nov 2026Information published.

CVSS 3.1 base metricsRed raises the risk · green lowers it

Attack vector: LocalAV:L
Attack complexity: HighAC:H
Privileges required: HighPR:H
User interaction: NoneUI:N
Scope: UnchangedS:U
Confidentiality: LowC:L
Integrity: NoneI:N
Availability: LowA:L

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

3 affected products

azl3 kernel 6.6.157.1-1 on Azure Linux 3.0
azl3 kernel 6.6.159.1-1 on Azure Linux 3.0
azl3 kernel 6.6.161.1-1 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
Affected products: azl3 kernel 6.6.157.1-1 on Azure Linux 3.0, azl3 kernel 6.6.159.1-1 on Azure Linux 3.0 → azl3 kernel 6.6.157.1-1 on Azure Linux 3.0, azl3 kernel 6.6.159.1-1 on Azure Linux 3.0, azl3 kernel 6.6.161.1-1 on Azure Linux 3.0
6 Nov 2026 · 09:07:49 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
Affected products: azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 → azl3 kernel 6.6.157.1-1 on Azure Linux 3.0, azl3 kernel 6.6.159.1-1 on Azure Linux 3.0
2 Nov 2026 · 09:04:36 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 (38)

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
6 Nov 2026 · 09:07:49 UTC Last revised1 Nov 2026 14:54 UTC → 5 Nov 2026 14:53 UTC
6 Nov 2026 · 09:07:49 UTC Affected productsazl3 kernel 6.6.157.1-1 on Azure Linux 3.0, azl3 kernel 6.6.159.1-1 on Azure Linux 3.0 → azl3 kernel 6.6.157.1-1 on Azure Linux 3.0, azl3 kernel 6.6.159.1-1 on Azure Linux 3.0, azl3 kernel 6.6.161.1-1 on Azure Linux 3.0
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
2 Nov 2026 · 09:04:36 UTC Last revised21 Oct 2026 18:42 UTC → 1 Nov 2026 14:54 UTC
2 Nov 2026 · 09:04:36 UTC Affected productsazl3 kernel 6.6.157.1-1 on Azure Linux 3.0 → azl3 kernel 6.6.157.1-1 on Azure Linux 3.0, azl3 kernel 6.6.159.1-1 on Azure Linux 3.0
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 revised20 Oct 2026 01:03 UTC → 21 Oct 2026 18:42 UTC

Explore global source statements, affected packages and advisory history for CVE-2026-98839. The catalog has a separate collection scope from Microsoft release records.

cve-program · CVE-2026-98839

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/tty/vt/selection.c"
                    ],
                    "versions": [
                        {
                            "version": "e8c75a30a23c6ba63f4ef6895cbf41fd42f21aa2",
                            "lessThan": "037d7e3ca5c593092f4b0d471eb869a85cbddde0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e8c75a30a23c6ba63f4ef6895cbf41fd42f21aa2",
                            "lessThan": "619c6d7dd76fff15a9714fbf02ce299b737f01a2",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e8c75a30a23c6ba63f4ef6895cbf41fd42f21aa2",
                            "lessThan": "39495ef5d6f8019e62d65807f217a7ca8232727a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "54c522782fd11a720f959ee9cb5a15bb9580343d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "05c508edc9d0b44e4706d3c2cf14ee12aac210d2",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e5be0e24ffc7f5783a3864b5b958088ed15be9e8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a4719f6d07b2c63223f7452c435c5f578f105cfe",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b4492f1e7456bd162714c0ec2815c2749d930844",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9a9c13ad21a8220cb70c9807a920f43520515f94",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8c368d36878e2fc99285279fc5e14b3d3cb8947c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3.16.83",
                            "lessThan": "3.17",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.4.216",
                            "lessThan": "4.5",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.9.216",
                            "lessThan": "4.10",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.14.173",
                            "lessThan": "4.15",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.19.109",
                            "lessThan": "4.20",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.4.25",
                            "lessThan": "5.5",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.5.9",
                            "lessThan": "5.6",
                            "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/tty/vt/selection.c"
                    ],
                    "versions": [
                        {
                            "version": "5.6",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.6",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.56",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.10",
                            "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