{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-43238",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-05-01T14:12:55.995Z",
        "datePublished": "2026-05-06T11:28:32.950Z",
        "dateUpdated": "2026-05-11T22:20:40.634Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T22:20:40.634Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: act_skbedit: fix divide-by-zero in tcf_skbedit_hash()\n\nCommit 38a6f0865796 (\"net: sched: support hash selecting tx queue\")\nadded SKBEDIT_F_TXQ_SKBHASH support. The inclusive range size is\ncomputed as:\n\nmapping_mod = queue_mapping_max - queue_mapping + 1;\n\nThe range size can be 65536 when the requested range covers all possible\nu16 queue IDs (e.g. queue_mapping=0 and queue_mapping_max=U16_MAX).\nThat value cannot be represented in a u16 and previously wrapped to 0,\nso tcf_skbedit_hash() could trigger a divide-by-zero:\n\nqueue_mapping += skb_get_hash(skb) % params->mapping_mod;\n\nCompute mapping_mod in a wider type and reject ranges larger than U16_MAX\nto prevent params->mapping_mod from becoming 0 and avoid the crash."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/sched/act_skbedit.c"
                    ],
                    "versions": [
                        {
                            "version": "38a6f0865796e26fc38fff4858f681d9ae76fa0f",
                            "lessThan": "59809fda4da7730cfe84a948033f47eb45db073d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "38a6f0865796e26fc38fff4858f681d9ae76fa0f",
                            "lessThan": "9c735a7d98c982a786b0db71eb6566ee00aaa04f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "38a6f0865796e26fc38fff4858f681d9ae76fa0f",
                            "lessThan": "015cebdfcb97b5347fb7f598ea712a281cb35840",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "38a6f0865796e26fc38fff4858f681d9ae76fa0f",
                            "lessThan": "4ece5eb4836f8ff03b9004dc2430a7169f282851",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "38a6f0865796e26fc38fff4858f681d9ae76fa0f",
                            "lessThan": "3c2b95b26860bd6f8e2310d31ea1200d3f8f173e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "38a6f0865796e26fc38fff4858f681d9ae76fa0f",
                            "lessThan": "be054cc66f739a9ba615dba9012a07fab8e7dd6f",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/sched/act_skbedit.c"
                    ],
                    "versions": [
                        {
                            "version": "5.19",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.19",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.165",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.128",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.75",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.16",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.6",
                            "lessThanOrEqual": "6.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
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                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                                    "versionEndExcluding": "6.1.165"
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/59809fda4da7730cfe84a948033f47eb45db073d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/9c735a7d98c982a786b0db71eb6566ee00aaa04f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/015cebdfcb97b5347fb7f598ea712a281cb35840"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4ece5eb4836f8ff03b9004dc2430a7169f282851"
                },
                {
                    "url": "https://git.kernel.org/stable/c/3c2b95b26860bd6f8e2310d31ea1200d3f8f173e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/be054cc66f739a9ba615dba9012a07fab8e7dd6f"
                }
            ],
            "title": "net/sched: act_skbedit: fix divide-by-zero in tcf_skbedit_hash()",
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