cve-2023-52491
Vulnerability from cvelistv5
Published
2024-02-29 15:52
Modified
2024-12-19 08:20
Severity ?
EPSS score ?
0.01% (0.01019)
Summary
In the Linux kernel, the following vulnerability has been resolved: media: mtk-jpeg: Fix use after free bug due to error path handling in mtk_jpeg_dec_device_run In mtk_jpeg_probe, &jpeg->job_timeout_work is bound with mtk_jpeg_job_timeout_work. In mtk_jpeg_dec_device_run, if error happens in mtk_jpeg_set_dec_dst, it will finally start the worker while mark the job as finished by invoking v4l2_m2m_job_finish. There are two methods to trigger the bug. If we remove the module, it which will call mtk_jpeg_remove to make cleanup. The possible sequence is as follows, which will cause a use-after-free bug. CPU0 CPU1 mtk_jpeg_dec_... | start worker | |mtk_jpeg_job_timeout_work mtk_jpeg_remove | v4l2_m2m_release | kfree(m2m_dev); | | | v4l2_m2m_get_curr_priv | m2m_dev->curr_ctx //use If we close the file descriptor, which will call mtk_jpeg_release, it will have a similar sequence. Fix this bug by starting timeout worker only if started jpegdec worker successfully. Then v4l2_m2m_job_finish will only be called in either mtk_jpeg_job_timeout_work or mtk_jpeg_dec_device_run.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1b1036c60a37a30caf6759a90fe5ecd06ec35590Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/206c857dd17d4d026de85866f1b5f0969f2a109ePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/43872f44eee6c6781fea1348b38885d8e78face9Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6e2f37022f0fc0893da4d85a0500c9d547fffd4cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8254d54d00eb6cdb8367399c7f912eb8d354ecd7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9fec4db7fff54d9b0306a332bab31eac47eeb5f6Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/1b1036c60a37a30caf6759a90fe5ecd06ec35590Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/206c857dd17d4d026de85866f1b5f0969f2a109ePatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/43872f44eee6c6781fea1348b38885d8e78face9Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/6e2f37022f0fc0893da4d85a0500c9d547fffd4cPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8254d54d00eb6cdb8367399c7f912eb8d354ecd7Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/9fec4db7fff54d9b0306a332bab31eac47eeb5f6Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlPatch
Impacted products
Vendor Product Version
Linux Linux Version: b2f0d2724ba477d326e9d654d4db1c93e98f8b93
Version: b2f0d2724ba477d326e9d654d4db1c93e98f8b93
Version: b2f0d2724ba477d326e9d654d4db1c93e98f8b93
Version: b2f0d2724ba477d326e9d654d4db1c93e98f8b93
Version: b2f0d2724ba477d326e9d654d4db1c93e98f8b93
Version: b2f0d2724ba477d326e9d654d4db1c93e98f8b93
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&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.\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-12-19T08:20:50.219Z\"}}}",
         cveMetadata: "{\"cveId\": \"CVE-2023-52491\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-12-19T08:20:50.219Z\", \"dateReserved\": \"2024-02-20T12:30:33.303Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-02-29T15:52:09.891Z\", \"assignerShortName\": \"Linux\"}",
         dataType: "CVE_RECORD",
         dataVersion: "5.1",
      },
   },
}


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