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ppp: defer channel free to an RCU grace period to fix pppol2tp RX UAF

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

cve-program · CVE-2026-68398

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/net/ppp/ppp_generic.c"
                    ],
                    "versions": [
                        {
                            "version": "ee40fb2e1eb5bc0ddd3f2f83c6e39a454ef5a741",
                            "lessThan": "4e47f1ac188ece11d6fdabe44166a2776cc5bd4e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ee40fb2e1eb5bc0ddd3f2f83c6e39a454ef5a741",
                            "lessThan": "110b765744b147c63882f5e9cb12931c5dc8d85f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ee40fb2e1eb5bc0ddd3f2f83c6e39a454ef5a741",
                            "lessThan": "4bb84e964ff0fe0a171c965362de72f9820dbce9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ee40fb2e1eb5bc0ddd3f2f83c6e39a454ef5a741",
                            "lessThan": "3ab32218d7182705dae5c86f13925f458072da2c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ee40fb2e1eb5bc0ddd3f2f83c6e39a454ef5a741",
                            "lessThan": "c9574b8a8edeb4edd3ac6472c27ef7184bdb2baa",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ee40fb2e1eb5bc0ddd3f2f83c6e39a454ef5a741",
                            "lessThan": "06213c85d8c0994f786c093b8b2a517987943ca6",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ee40fb2e1eb5bc0ddd3f2f83c6e39a454ef5a741",
                            "lessThan": "ec4215683e47424c9c4762fd3c60f552a3119142",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d36e5ba7bbed5d7bd26e8609ffed503c2def401b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9bcc0508576b2d50efd958f2ea1c5906749c2c89",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c2984681fe15cfb803a9132aaaf1140ab20a72c1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5803ecd7f6ac6f747582e775caa62ac9d0489261",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "26f8819ddd10141ebe7bbce700fbab36bfa5f478",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3.2.99",
                            "lessThan": "3.3",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "3.16.54",
                            "lessThan": "3.17",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.4.225",
                            "lessThan": "4.5",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.9.225",
                            "lessThan": "4.10",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.14.182",
                            "lessThan": "4.15",
                            "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/net/ppp/ppp_generic.c"
                    ],
                    "versions": [
                        {
                            "version": "4.15",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.15",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.216",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.183",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.148",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.101",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.42",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.6",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }

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

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Sources read 8 Nov 15:15 UTC · 274 of 275 readable · 272 fully read · documentation 469/469 current