CVE-2026-98383ImportantLocalRevised 21 Oct

bpf: Disallow bpf_skb_pull_data() for LWT_SEG6LOCAL

MSRC advisory NVD CVE.org

Assessment

Severity: Important
CVSS base score: 7.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/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: 10 Oct 2026 · October 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: NoneC:N
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 14 Oct 2026

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

Show 5 more recent changes

21 Oct 2026 · 20:45:25 UTCLast revised 15 Oct 2026 02:53 UTC → 21 Oct 2026 18:41 UTC
18 Oct 2026 · 14:54:30 UTCLink: October 2026 → /security?release=2026-Oct#cves
15 Oct 2026 · 07:14:54 UTCLast revised 13 Oct 2026 17:05 UTC → 15 Oct 2026 02:53 UTC
14 Oct 2026 · 11:22:42 UTCLast revised 10 Oct 2026 01:10 UTC → 13 Oct 2026 17:05 UTC
14 Oct 2026 · 11:22:42 UTCSource coverage: msrc-cvrf Incomplete → Current

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Explore global source statements, affected packages and advisory history for CVE-2026-98383. The catalog has a separate collection scope from Microsoft release records.

cve-program · CVE-2026-98383

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/core/filter.c"
                    ],
                    "versions": [
                        {
                            "version": "004d4b274e2a1a895a0e5dc66158b90a7d463d44",
                            "lessThan": "0f38472a2aa8704a6b514c0dfa9c32f3672b8f32",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "004d4b274e2a1a895a0e5dc66158b90a7d463d44",
                            "lessThan": "cae8674489f26edf7553fdd660599466cbb4c32f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "004d4b274e2a1a895a0e5dc66158b90a7d463d44",
                            "lessThan": "9f9e57b5a3a033f95f49ef9d541340cdbcb80abb",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "004d4b274e2a1a895a0e5dc66158b90a7d463d44",
                            "lessThan": "df0072be6fc373cb22f9ea854d458b04e32a03cf",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "004d4b274e2a1a895a0e5dc66158b90a7d463d44",
                            "lessThan": "b9bb0e735460751b620156f800a4279a28573392",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "004d4b274e2a1a895a0e5dc66158b90a7d463d44",
                            "lessThan": "37b18688cd18fd86d2f35c212df1611862a26cd5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "004d4b274e2a1a895a0e5dc66158b90a7d463d44",
                            "lessThan": "fca71ead7a20290af1e2046983eeafae43d21af1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "004d4b274e2a1a895a0e5dc66158b90a7d463d44",
                            "lessThan": "e4a62833adff6ef0fe7c0b90393204fe3c26b5c5",
                            "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/core/filter.c"
                    ],
                    "versions": [
                        {
                            "version": "4.18",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.18",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.271",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.222",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.189",
                            "lessThanOrEqual": "6.1.*",
                            "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"
                        }
                    ]
                }