{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-93240",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-17T16:02:15.095Z",
        "datePublished": "2026-09-24T15:34:32.134Z",
        "dateUpdated": "2026-10-21T12:52:27.295Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-21T12:52:27.295Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmemcg: make the v1 soft limit knob inert\n\nThe v1 soft limit has been deprecated since v6.12 and nobody has reported\ndepending on it.  Start the removal by decoupling the interface from the\nimplementation: keep memory.soft_limit_in_bytes, but ignore writes to it\nand always report the maximum value on read similar to what\nmemory.kmem.limit_in_bytes already does.\n\nWrites are still parsed, so malformed input keeps returning -EINVAL.  The\nknob now also behaves the same everywhere: it used to return -EOPNOTSUPP\non PREEMPT_RT, where soft limit reclaim has always been disabled.\n\nThis also fixes the syzbot report linked below.  Soft limit reclaim is the\nonly caller that runs shrink_lruvec() from kswapd against a specific\nmemcg, so it is the only way to reach lru_gen_shrink_lruvec() and in turn\nset_mm_walk(), which warns when called from kswapd."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "Documentation/admin-guide/cgroup-v1/memory.rst",
                        "mm/memcontrol-v1.c"
                    ],
                    "versions": [
                        {
                            "version": "e9d4e1ee788097484606c32122f146d802a9c5fb",
                            "lessThan": "bf75f14d755f9cfbb246e6cc011b53cdd5142de3",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e9d4e1ee788097484606c32122f146d802a9c5fb",
                            "lessThan": "72fb67f6e0e5d78e4f34cf9929d1afdb0fd54203",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e9d4e1ee788097484606c32122f146d802a9c5fb",
                            "lessThan": "0a90e268cce7023f34087bfa4affb42e29ff5f45",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e9d4e1ee788097484606c32122f146d802a9c5fb",
                            "lessThan": "5ec8f629a300cc40e746d6178f724bdff7683fa7",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e9d4e1ee788097484606c32122f146d802a9c5fb",
                            "lessThan": "a3417097fb107cea3358b19bcbb4eb655fd67f8c",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "Documentation/admin-guide/cgroup-v1/memory.rst",
                        "mm/memcontrol-v1.c"
                    ],
                    "versions": [
                        {
                            "version": "6.3",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.3",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.160",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.110",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.51",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.5",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.3",
                                    "versionEndExcluding": "6.6.160"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.3",
                                    "versionEndExcluding": "6.12.110"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.3",
                                    "versionEndExcluding": "6.18.51"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.3",
                                    "versionEndExcluding": "7.2.5"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.3",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/bf75f14d755f9cfbb246e6cc011b53cdd5142de3"
                },
                {
                    "url": "https://git.kernel.org/stable/c/72fb67f6e0e5d78e4f34cf9929d1afdb0fd54203"
                },
                {
                    "url": "https://git.kernel.org/stable/c/0a90e268cce7023f34087bfa4affb42e29ff5f45"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5ec8f629a300cc40e746d6178f724bdff7683fa7"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a3417097fb107cea3358b19bcbb4eb655fd67f8c"
                }
            ],
            "title": "memcg: make the v1 soft limit knob inert",
            "x_generator": {
                "engine": "bippy-1.2.0"
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    }
}