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        "cveId": "CVE-2023-52491",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-02-20T12:30:33.303Z",
        "datePublished": "2024-02-29T15:52:09.891Z",
        "dateUpdated": "2024-08-08T18:47:11.526Z"
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                "dateUpdated": "2024-05-28T19:50:27.901Z"
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            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: mtk-jpeg: Fix use after free bug due to error path handling in mtk_jpeg_dec_device_run\n\nIn mtk_jpeg_probe, &jpeg->job_timeout_work is bound with\nmtk_jpeg_job_timeout_work.\n\nIn mtk_jpeg_dec_device_run, if error happens in\nmtk_jpeg_set_dec_dst, it will finally start the worker while\nmark the job as finished by invoking v4l2_m2m_job_finish.\n\nThere are two methods to trigger the bug. If we remove the\nmodule, it which will call mtk_jpeg_remove to make cleanup.\nThe possible sequence is as follows, which will cause a\nuse-after-free bug.\n\nCPU0                  CPU1\nmtk_jpeg_dec_...    |\n  start worker\t    |\n                    |mtk_jpeg_job_timeout_work\nmtk_jpeg_remove     |\n  v4l2_m2m_release  |\n    kfree(m2m_dev); |\n                    |\n                    | v4l2_m2m_get_curr_priv\n                    |   m2m_dev->curr_ctx //use\n\nIf we close the file descriptor, which will call mtk_jpeg_release,\nit will have a similar sequence.\n\nFix this bug by starting timeout worker only if started jpegdec worker\nsuccessfully. Then v4l2_m2m_job_finish will only be called in\neither mtk_jpeg_job_timeout_work or mtk_jpeg_dec_device_run."
                }
            ],
            "affected": [
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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/media/platform/mediatek/jpeg/mtk_jpeg_core.c"
                    ],
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                            "lessThan": "43872f44eee6",
                            "status": "affected",
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                        {
                            "version": "b2f0d2724ba4",
                            "lessThan": "1b1036c60a37",
                            "status": "affected",
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                        {
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                        {
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                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c"
                    ],
                    "versions": [
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                            "version": "4.12",
                            "status": "affected"
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                        {
                            "version": "0",
                            "lessThan": "4.12",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "5.10.210",
                            "lessThanOrEqual": "5.10.*",
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                            "version": "5.15.149",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
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                            "version": "6.1.76",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
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                        {
                            "version": "6.6.15",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "6.7.3",
                            "lessThanOrEqual": "6.7.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "6.8",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/43872f44eee6c6781fea1348b38885d8e78face9"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1b1036c60a37a30caf6759a90fe5ecd06ec35590"
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                },
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                },
                {
                    "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"
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            "title": "media: mtk-jpeg: Fix use after free bug due to error path handling in mtk_jpeg_dec_device_run",
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