CVE-2026-89630Published

smb: client: restore the data_offset bound in is_valid_oplock_break()

Exact source revision recorded 23 Oct 2026 15:48:27 UTC. It does not establish the source's current position. Latest evidence.

Recorded JSON

cve-program · CVE-2026-89630

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": [
                        "fs/smb/client/smb1misc.c"
                    ],
                    "versions": [
                        {
                            "version": "83bfbd0bb9025f98fa62b44f93bd67466773d1db",
                            "lessThan": "5b16a1967a01ad4496a7206a87c3eb16f1df2b05",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "83bfbd0bb9025f98fa62b44f93bd67466773d1db",
                            "lessThan": "ba22f575de9deeae4ae0859ca4315a7698226237",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "78e718c5aa146063cd70d2cc68297c3ac41f31ee",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6.18.56",
                            "lessThan": "6.19",
                            "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": [
                        "fs/smb/client/smb1misc.c"
                    ],
                    "versions": [
                        {
                            "version": "6.19",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.19",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.4",
                            "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