CVE-2023-52491
Vulnerability from cvelistv5
Published
2024-02-29 15:52
Modified
2024-11-04 14:47
Severity ?
Summary
media: mtk-jpeg: Fix use after free bug due to error path handling in mtk_jpeg_dec_device_run
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1b1036c60a37a30caf6759a90fe5ecd06ec35590
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/206c857dd17d4d026de85866f1b5f0969f2a109e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/43872f44eee6c6781fea1348b38885d8e78face9
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6e2f37022f0fc0893da4d85a0500c9d547fffd4c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8254d54d00eb6cdb8367399c7f912eb8d354ecd7
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9fec4db7fff54d9b0306a332bab31eac47eeb5f6
Impacted products
LinuxLinux
LinuxLinux
Show details on NVD website

To clipboard 

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          "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, \u0026jpeg-\u003ejob_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-\u003ecurr_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."
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