CVE-2026-98456ImportantLocalRevised 24 Oct

Bluetooth: mgmt: fix race in read_unconf_index_list()

MSRC advisory NVD CVE.org

Assessment

Severity: Important
CVSS base score: 7.0CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Impact: Not stated
EPSS, next 30 days: Not scored yet
Public exploit code: No Nuclei template lists it
Exploitability: Not assessed
Publicly disclosed: No
Customer action: Required: apply the update
Component: Mariner
Weakness: —
Issued by: Linux
Published: 20 Oct 2026 · October 2026
Last revised: 24 Oct 2026Information published.

CVSS 3.1 base metricsRed raises the risk · green lowers it

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

Updates that fix it

0 KBs

No KB listed

MSRC lists no downloadable update, which usually means a service-side fix or a release-notes update. Check the MSRC advisory.

Affected products

1 affected product

azl3 kernel 6.6.157.1-1 on Azure Linux 3.0

What changed

First observed 20 Oct 2026

25 Oct 2026 · 07:41:18 UTC Last revised21 Oct 2026 18:33 UTC → 24 Oct 2026 14:45 UTC
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

Show 2 more recent changes

23 Oct 2026 · 08:31:50 UTCSource coverage: msrc-cvrf Current → Incomplete
21 Oct 2026 · 20:45:25 UTCLast revised 20 Oct 2026 01:09 UTC → 21 Oct 2026 18:33 UTC

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Explore global source statements, affected packages and advisory history for CVE-2026-98456. The catalog has a separate collection scope from Microsoft release records.

cve-program · CVE-2026-98456

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": [
                        "net/bluetooth/mgmt.c"
                    ],
                    "versions": [
                        {
                            "version": "73d1df2a7a1036a1f000e5f0ece6ade3e082b854",
                            "lessThan": "524e0450dd9a396f99a81b045219b0e2ea0dab57",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "73d1df2a7a1036a1f000e5f0ece6ade3e082b854",
                            "lessThan": "8ddf962c76432a10a6cb80042875cbc48a9c056b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "73d1df2a7a1036a1f000e5f0ece6ade3e082b854",
                            "lessThan": "416546cd6a54e9b68f2b91bc680b1ee17dcd77a1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "73d1df2a7a1036a1f000e5f0ece6ade3e082b854",
                            "lessThan": "2e8bba0360d1379bfa8da47c8f5dadbb10a3fba1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "73d1df2a7a1036a1f000e5f0ece6ade3e082b854",
                            "lessThan": "b5dbb41b212c50c095a4dbee3017a84fe94f033b",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                }

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": [
                        "net/bluetooth/mgmt.c"
                    ],
                    "versions": [
                        {
                            "version": "3.17",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "3.17",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.158",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.112",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.55",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.9",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }