{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "cveId": "CVE-2024-26998",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-02-19T14:20:24.206Z",
        "datePublished": "2024-05-01T05:28:25.905Z",
        "dateUpdated": "2024-08-02T00:21:05.918Z"
    },
    "containers": {
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            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2024-05-29T05:26:41.917Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nserial: core: Clearing the circular buffer before NULLifying it\n\nThe circular buffer is NULLified in uart_tty_port_shutdown()\nunder the spin lock. However, the PM or other timer based callbacks\nmay still trigger after this event without knowning that buffer pointer\nis not valid. Since the serial code is a bit inconsistent in checking\nthe buffer state (some rely on the head-tail positions, some on the\nbuffer pointer), it's better to have both aligned, i.e. buffer pointer\nto be NULL and head-tail possitions to be the same, meaning it's empty.\nThis will prevent asynchronous calls to dereference NULL pointer as\nreported recently in 8250 case:\n\n  BUG: kernel NULL pointer dereference, address: 00000cf5\n  Workqueue: pm pm_runtime_work\n  EIP: serial8250_tx_chars (drivers/tty/serial/8250/8250_port.c:1809)\n  ...\n  ? serial8250_tx_chars (drivers/tty/serial/8250/8250_port.c:1809)\n  __start_tx (drivers/tty/serial/8250/8250_port.c:1551)\n  serial8250_start_tx (drivers/tty/serial/8250/8250_port.c:1654)\n  serial_port_runtime_suspend (include/linux/serial_core.h:667 drivers/tty/serial/serial_port.c:63)\n  __rpm_callback (drivers/base/power/runtime.c:393)\n  ? serial_port_remove (drivers/tty/serial/serial_port.c:50)\n  rpm_suspend (drivers/base/power/runtime.c:447)\n\nThe proposed change will prevent ->start_tx() to be called during\nsuspend on shut down port."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/tty/serial/serial_core.c"
                    ],
                    "versions": [
                        {
                            "version": "434beb66368d",
                            "lessThan": "7ae7104d5434",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "43066e32227e",
                            "lessThan": "bb1118905e87",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "43066e32227e",
                            "lessThan": "9cf7ea2eeb74",
                            "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/tty/serial/serial_core.c"
                    ],
                    "versions": [
                        {
                            "version": "6.8",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.8",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "6.6.29",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "6.8.8",
                            "lessThanOrEqual": "6.8.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "6.9",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/7ae7104d54342433a3a73975f6569beefdd86350"
                },
                {
                    "url": "https://git.kernel.org/stable/c/bb1118905e875c111d7ccef9aee86ac5e4e7f985"
                },
                {
                    "url": "https://git.kernel.org/stable/c/9cf7ea2eeb745213dc2a04103e426b960e807940"
                }
            ],
            "title": "serial: core: Clearing the circular buffer before NULLifying it",
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        },
        "adp": [
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                            "type": "ssvc",
                            "content": {
                                "id": "CVE-2024-26998",
                                "role": "CISA Coordinator",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
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                                        "Automatable": "no"
                                    },
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                                        "Technical Impact": "partial"
                                    }
                                ],
                                "version": "2.0.3",
                                "timestamp": "2024-05-09T18:39:13.227309Z"
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                    "dateUpdated": "2024-07-05T17:22:46.551Z"
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                    "shortName": "CVE",
                    "dateUpdated": "2024-08-02T00:21:05.918Z"
                },
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "https://git.kernel.org/stable/c/7ae7104d54342433a3a73975f6569beefdd86350",
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