{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-43205",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-05-01T14:12:55.992Z",
        "datePublished": "2026-05-06T11:28:10.270Z",
        "dateUpdated": "2026-05-11T22:20:00.994Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T22:20:00.994Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndpaa2-switch: validate num_ifs to prevent out-of-bounds write\n\nThe driver obtains sw_attr.num_ifs from firmware via dpsw_get_attributes()\nbut never validates it against DPSW_MAX_IF (64). This value controls\niteration in dpaa2_switch_fdb_get_flood_cfg(), which writes port indices\ninto the fixed-size cfg->if_id[DPSW_MAX_IF] array. When firmware reports\nnum_ifs >= 64, the loop can write past the array bounds.\n\nAdd a bound check for num_ifs in dpaa2_switch_init().\n\ndpaa2_switch_fdb_get_flood_cfg() appends the control interface (port\nnum_ifs) after all matched ports. When num_ifs == DPSW_MAX_IF and all\nports match the flood filter, the loop fills all 64 slots and the control\ninterface write overflows by one entry.\n\nThe check uses >= because num_ifs == DPSW_MAX_IF is also functionally\nbroken.\n\nbuild_if_id_bitmap() silently drops any ID >= 64:\n      if (id[i] < DPSW_MAX_IF)\n          bmap[id[i] / 64] |= ..."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c"
                    ],
                    "versions": [
                        {
                            "version": "539dda3c5d190c5088b5e57944b1b482fcb464de",
                            "lessThan": "a26dda3bae469c8e4e1b1993ad33dafa32d0fc28",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "539dda3c5d190c5088b5e57944b1b482fcb464de",
                            "lessThan": "a3034a8d56174dd6464c46823438f25797910a8d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "539dda3c5d190c5088b5e57944b1b482fcb464de",
                            "lessThan": "b690635d4719214892855b79ce018d4b1672ac96",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "539dda3c5d190c5088b5e57944b1b482fcb464de",
                            "lessThan": "8b841fd529db9faf8bc678d429d4bf4e98b10900",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "539dda3c5d190c5088b5e57944b1b482fcb464de",
                            "lessThan": "89764cf44544e943230f5e03b8c40a90da26537c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "539dda3c5d190c5088b5e57944b1b482fcb464de",
                            "lessThan": "c18493f750208eb4ff1198fc5a02786b8b2d70a6",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "539dda3c5d190c5088b5e57944b1b482fcb464de",
                            "lessThan": "8a5752c6dcc085a3bfc78589925182e4e98468c5",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c"
                    ],
                    "versions": [
                        {
                            "version": "5.13",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.13",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.202",
                            "lessThanOrEqual": "5.15.*",
                            "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": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.13",
                                    "versionEndExcluding": "5.15.202"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.13",
                                    "versionEndExcluding": "6.1.165"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.13",
                                    "versionEndExcluding": "6.6.128"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.13",
                                    "versionEndExcluding": "6.12.75"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.13",
                                    "versionEndExcluding": "6.18.16"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.13",
                                    "versionEndExcluding": "6.19.6"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.13",
                                    "versionEndExcluding": "7.0"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/a26dda3bae469c8e4e1b1993ad33dafa32d0fc28"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a3034a8d56174dd6464c46823438f25797910a8d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b690635d4719214892855b79ce018d4b1672ac96"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8b841fd529db9faf8bc678d429d4bf4e98b10900"
                },
                {
                    "url": "https://git.kernel.org/stable/c/89764cf44544e943230f5e03b8c40a90da26537c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c18493f750208eb4ff1198fc5a02786b8b2d70a6"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8a5752c6dcc085a3bfc78589925182e4e98468c5"
                }
            ],
            "title": "dpaa2-switch: validate num_ifs to prevent out-of-bounds write",
            "x_generator": {
                "engine": "bippy-1.2.0"
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}