CVE-2023-52491 (GCVE-0-2023-52491)

Vulnerability from cvelistv5 – Published: 2024-02-29 15:52 – Updated: 2025-05-04 07:37
VLAI?
Title
media: mtk-jpeg: Fix use after free bug due to error path handling in mtk_jpeg_dec_device_run
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: b2f0d2724ba477d326e9d654d4db1c93e98f8b93 , < 43872f44eee6c6781fea1348b38885d8e78face9 (git)
Affected: b2f0d2724ba477d326e9d654d4db1c93e98f8b93 , < 1b1036c60a37a30caf6759a90fe5ecd06ec35590 (git)
Affected: b2f0d2724ba477d326e9d654d4db1c93e98f8b93 , < 9fec4db7fff54d9b0306a332bab31eac47eeb5f6 (git)
Affected: b2f0d2724ba477d326e9d654d4db1c93e98f8b93 , < 8254d54d00eb6cdb8367399c7f912eb8d354ecd7 (git)
Affected: b2f0d2724ba477d326e9d654d4db1c93e98f8b93 , < 6e2f37022f0fc0893da4d85a0500c9d547fffd4c (git)
Affected: b2f0d2724ba477d326e9d654d4db1c93e98f8b93 , < 206c857dd17d4d026de85866f1b5f0969f2a109e (git)
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    Linux Linux Affected: 4.12
Unaffected: 0 , < 4.12 (semver)
Unaffected: 5.10.210 , ≤ 5.10.* (semver)
Unaffected: 5.15.149 , ≤ 5.15.* (semver)
Unaffected: 6.1.76 , ≤ 6.1.* (semver)
Unaffected: 6.6.15 , ≤ 6.6.* (semver)
Unaffected: 6.7.3 , ≤ 6.7.* (semver)
Unaffected: 6.8 , ≤ * (original_commit_for_fix)
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