CVE - CVE-2023-52491

CVE-ID
CVE-2023-52491	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/1b1036c60a37a30caf6759a90fe5ecd06ec35590 URL:https://git.kernel.org/stable/c/1b1036c60a37a30caf6759a90fe5ecd06ec35590 MISC:https://git.kernel.org/stable/c/206c857dd17d4d026de85866f1b5f0969f2a109e URL:https://git.kernel.org/stable/c/206c857dd17d4d026de85866f1b5f0969f2a109e MISC:https://git.kernel.org/stable/c/43872f44eee6c6781fea1348b38885d8e78face9 URL:https://git.kernel.org/stable/c/43872f44eee6c6781fea1348b38885d8e78face9 MISC:https://git.kernel.org/stable/c/6e2f37022f0fc0893da4d85a0500c9d547fffd4c URL:https://git.kernel.org/stable/c/6e2f37022f0fc0893da4d85a0500c9d547fffd4c MISC:https://git.kernel.org/stable/c/8254d54d00eb6cdb8367399c7f912eb8d354ecd7 URL:https://git.kernel.org/stable/c/8254d54d00eb6cdb8367399c7f912eb8d354ecd7 MISC:https://git.kernel.org/stable/c/9fec4db7fff54d9b0306a332bab31eac47eeb5f6 URL:https://git.kernel.org/stable/c/9fec4db7fff54d9b0306a332bab31eac47eeb5f6
Assigning CNA
kernel.org
Date Record Created
20240220	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240220)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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