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    "cveMetadata": {
        "cveId": "CVE-2025-39873",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-04-16T07:20:57.144Z",
        "datePublished": "2025-09-23T06:00:46.157Z",
        "dateUpdated": "2026-07-30T05:58:14.662Z"
    },
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                "dateUpdated": "2026-07-30T05:58:14.662Z"
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            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: xilinx_can: xcan_write_frame(): fix use-after-free of transmitted SKB\n\ncan_put_echo_skb() takes ownership of the SKB and it may be freed\nduring or after the call.\n\nHowever, xilinx_can xcan_write_frame() keeps using SKB after the call.\n\nFix that by only calling can_put_echo_skb() after the code is done\ntouching the SKB.\n\nThe tx_lock is held for the entire xcan_write_frame() execution and\nalso on the can_get_echo_skb() side so the order of operations does not\nmatter.\n\nAn earlier fix commit 3d3c817c3a40 (\"can: xilinx_can: Fix usage of skb\nmemory\") did not move the can_put_echo_skb() call far enough.\n\n[mkl: add \"commit\" in front of sha1 in patch description]\n[mkl: fix indention]"
                }
            ],
            "metrics": [
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                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                        "baseScore": 7.8,
                        "baseSeverity": "HIGH"
                    }
                }
            ],
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                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/can/xilinx_can.c"
                    ],
                    "versions": [
                        {
                            "version": "1598efe57b3e768056e4ca56cb9cf33111e68d1c",
                            "lessThan": "e202ffd9e54538ef67ec301ebd6d9da4823466c9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1598efe57b3e768056e4ca56cb9cf33111e68d1c",
                            "lessThan": "1139321161a3ba5e45e61e0738b37f42f20bc57a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1598efe57b3e768056e4ca56cb9cf33111e68d1c",
                            "lessThan": "94b050726288a56a6b8ff55aa641f2fedbd3b44c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1598efe57b3e768056e4ca56cb9cf33111e68d1c",
                            "lessThan": "725b33deebd6e4c96fe7893f384510a54258f28f",
                            "status": "affected",
                            "versionType": "git"
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                        {
                            "version": "1598efe57b3e768056e4ca56cb9cf33111e68d1c",
                            "lessThan": "668cc1e3bb21101d074e430de1b7ba8fd10189e7",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1598efe57b3e768056e4ca56cb9cf33111e68d1c",
                            "lessThan": "ef79f00be72bd81d2e1e6f060d83cf7e425deee4",
                            "status": "affected",
                            "versionType": "git"
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                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/can/xilinx_can.c"
                    ],
                    "versions": [
                        {
                            "version": "4.19",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.19",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.194",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.153",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.107",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.48",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.16.8",
                            "lessThanOrEqual": "6.16.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.17",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
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                    "nodes": [
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                            "operator": "OR",
                            "negate": false,
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                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/e202ffd9e54538ef67ec301ebd6d9da4823466c9"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1139321161a3ba5e45e61e0738b37f42f20bc57a"
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                    "url": "https://git.kernel.org/stable/c/94b050726288a56a6b8ff55aa641f2fedbd3b44c"
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                    "url": "https://git.kernel.org/stable/c/725b33deebd6e4c96fe7893f384510a54258f28f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/668cc1e3bb21101d074e430de1b7ba8fd10189e7"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ef79f00be72bd81d2e1e6f060d83cf7e425deee4"
                }
            ],
            "title": "can: xilinx_can: xcan_write_frame(): fix use-after-free of transmitted SKB",
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        "adp": [
            {
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
                    }
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                    "shortName": "CVE",
                    "dateUpdated": "2025-11-03T17:44:20.103Z"
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}