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CVE-2023-52491— media: mtk-jpeg: Fix use after free bug due to error path handling in mtk_jpeg_dec_device_run

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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。

CVSS 7.8 · High EPSS 0.28% · P19

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux b2f0d2724ba477d326e9d654d4db1c93e98f8b93< 43872f44eee6c6781fea1348b38885d8e78face9 affected
b2f0d2724ba477d326e9d654d4db1c93e98f8b93< 1b1036c60a37a30caf6759a90fe5ecd06ec35590 affected
b2f0d2724ba477d326e9d654d4db1c93e98f8b93< 9fec4db7fff54d9b0306a332bab31eac47eeb5f6 affected
b2f0d2724ba477d326e9d654d4db1c93e98f8b93< 8254d54d00eb6cdb8367399c7f912eb8d354ecd7 affected
b2f0d2724ba477d326e9d654d4db1c93e98f8b93< 6e2f37022f0fc0893da4d85a0500c9d547fffd4c affected
b2f0d2724ba477d326e9d654d4db1c93e98f8b93< 206c857dd17d4d026de85866f1b5f0969f2a109e affected
4.12 affected
< 4.12 unaffected
… +6 more rows
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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: CVE Program / CVE List V5
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: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux b2f0d2724ba477d326e9d654d4db1c93e98f8b93 ~ 43872f44eee6c6781fea1348b38885d8e78face9 -
Linux Linux 4.12 -

II. Public POCs for CVE-2023-52491

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III. Intelligence Information for CVE-2023-52491

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Mailing List Discussions for CVE-2023-52491 (1)

Other References for CVE-2023-52491 (6)

Same Patch Batch · Linux · 2024-02-29 · 53 CVEs total

CVE-2023-52480 9.8 CRITICAL ksmbd: fix race condition between session lookup and expire
CVE-2023-52478 8.8 HIGH HID: logitech-hidpp: Fix kernel crash on receiver USB disconnect
CVE-2023-52479 8.8 HIGH ksmbd: fix uaf in smb20_oplock_break_ack
CVE-2024-26620 8.2 HIGH s390/vfio-ap: always filter entire AP matrix
CVE-2024-26608 7.8 HIGH ksmbd: fix global oob in ksmbd_nl_policy
CVE-2024-26617 7.8 HIGH fs/proc/task_mmu: move mmu notification mechanism inside mm lock
CVE-2023-52483 7.8 HIGH mctp: perform route lookups under a RCU read-side lock
CVE-2024-26614 7.8 HIGH tcp: make sure init the accept_queue's spinlocks once
CVE-2023-52486 7.8 HIGH drm: Don't unref the same fb many times by mistake due to deadlock handling
CVE-2021-47061 7.8 HIGH KVM: Destroy I/O bus devices on unregister failure _after_ sync'ing SRCU
CVE-2021-47060 7.8 HIGH KVM: Stop looking for coalesced MMIO zones if the bus is destroyed
CVE-2024-26610 7.8 HIGH wifi: iwlwifi: fix a memory corruption
CVE-2021-47068 7.8 HIGH net/nfc: fix use-after-free llcp_sock_bind/connect
CVE-2024-26611 7.5 HIGH xsk: fix usage of multi-buffer BPF helpers for ZC XDP
CVE-2023-52497 7.1 HIGH erofs: fix lz4 inplace decompression
CVE-2021-47055 7.1 HIGH mtd: require write permissions for locking and badblock ioctls
CVE-2021-47066 7.1 HIGH async_xor: increase src_offs when dropping destination page
CVE-2024-26619 riscv: Fix module loading free order
CVE-2021-47020 soundwire: stream: fix memory leak in stream config error path
CVE-2024-26612 netfs, fscache: Prevent Oops in fscache_put_cache()

Showing top 20 of 53 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2023-52491

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