CVE-2023-52491— media: mtk-jpeg: Fix use after free bug due to error path handling in mtk_jpeg_dec_device_run
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I. Basic Information for CVE-2023-52491
Vulnerability Information
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Vulnerability Title
media: mtk-jpeg: Fix use after free bug due to error path handling in mtk_jpeg_dec_device_run
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于mtk_jpeg_dec_device_run中存在错误路径处理问题，导致存在释放后重用漏洞。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2023-52491
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Same Patch Batch · Linux · 2024-02-29 · 53 CVEs total
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| CVE-2021-47067 | soc/tegra: regulators: Fix locking up when voltage-spread is out of range | |
| CVE-2021-47062 | KVM: SVM: Use online_vcpus, not created_vcpus, to iterate over vCPUs | |
| CVE-2021-47065 | rtw88: Fix array overrun in rtw_get_tx_power_params() | |
| CVE-2021-47064 | mt76: fix potential DMA mapping leak | |
| CVE-2021-47063 | drm: bridge/panel: Cleanup connector on bridge detach | |
| CVE-2021-47066 | async_xor: increase src_offs when dropping destination page | |
| CVE-2021-47055 | mtd: require write permissions for locking and badblock ioctls | |
| CVE-2021-47054 | bus: qcom: Put child node before return | |
| CVE-2021-47056 | crypto: qat - ADF_STATUS_PF_RUNNING should be set after adf_dev_init | |
| CVE-2021-47016 | m68k: mvme147,mvme16x: Don't wipe PCC timer config bits | |
| CVE-2021-46959 | spi: Fix use-after-free with devm_spi_alloc_* | |
| CVE-2024-26620 | s390/vfio-ap: always filter entire AP matrix | |
| CVE-2024-26619 | riscv: Fix module loading free order | |
| CVE-2024-26618 | arm64/sme: Always exit sme_alloc() early with existing storage | |
| CVE-2024-26617 | fs/proc/task_mmu: move mmu notification mechanism inside mm lock | |
| CVE-2024-26616 | btrfs: scrub: avoid use-after-free when chunk length is not 64K aligned | |
| CVE-2024-26615 | net/smc: fix illegal rmb_desc access in SMC-D connection dump | |
| CVE-2024-26614 | tcp: make sure init the accept_queue's spinlocks once |
Showing top 20 of 53 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
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Same vendor: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
V. Comments for CVE-2023-52491
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