CVE-2023-52491 (GCVE-0-2023-52491)
Vulnerability from cvelistv5 – Published: 2024-02-29 15:52 – Updated: 2026-08-05 09:10
VLAI
EPSS
VEX
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
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-08-08 18:46 UTC
Assigner
References
7 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| 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) |
guessed | |
| 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) |
guessed |
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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-\u003ecurr_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.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: medio: mtk-jpeg: Se corrigi\u00f3 el error de use-after-free debido al manejo de la ruta de error en mtk_jpeg_dec_device_run En mtk_jpeg_probe, \u0026amp;jpeg-\u0026gt;job_timeout_work est\u00e1 vinculado con mtk_jpeg_job_timeout_work. En mtk_jpeg_dec_device_run, si ocurre un error en mtk_jpeg_set_dec_dst, finalmente iniciar\u00e1 el trabajador mientras marca el trabajo como finalizado invocando v4l2_m2m_job_finish. Hay dos m\u00e9todos para activar el error. Si eliminamos el m\u00f3dulo, llamar\u00e1 a mtk_jpeg_remove para realizar la limpieza. La secuencia posible es la siguiente, lo que provocar\u00e1 un error de use-after-free. CPU0 CPU1 mtk_jpeg_dec_... | empezar trabajador | |mtk_jpeg_job_timeout_work mtk_jpeg_remove | v4l2_m2m_release | kfree(m2m_dev); | | | v4l2_m2m_get_curr_priv | m2m_dev-\u0026gt;curr_ctx //use Si cerramos el descriptor de archivo, que llamar\u00e1 a mtk_jpeg_release, tendr\u00e1 una secuencia similar. Corrija este error iniciando el trabajador de tiempo de espera solo si inici\u00f3 el trabajador jpegdec exitosamente. 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"aggregate_severity": "Low",
"current_release_date": "2026-08-04T22:58:01+00:00",
"cve": "CVE-2023-52491",
"id": "CVE-2023-52491",
"initial_release_date": "2023-01-01T00:00:00+00:00",
"product_status:known_not_affected": "198",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: media: mtk-jpeg: Fix use after free bug due to error path handling in mtk_jpeg_dec_device_run",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-52491.json",
"version": "3"
},
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"aggregate_severity": "moderate",
"current_release_date": "2026-09-01T01:18:26Z",
"cve": "CVE-2023-52491",
"id": "CVE-2023-52491",
"initial_release_date": "2024-03-13T04:24:44Z",
"product_status:known_affected": "144",
"product_status:known_not_affected": "346",
"product_status:recommended": "202",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2023-52491",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-52491.json",
"version": "40"
},
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they fully control the subsequent close or a second decode session that races the dangling timeout, so success does not depend on conditions outside their control.\\nPR:L - mtk_jpeg_open has no capability checks; triggering the path only needs access to the JPEG codec video node at unprivileged video-group/media-process level, not real root or init-namespace admin rights.\\nUI:N - The attacker performs the entire open, queue, intentional decode-error, and close/second-session sequence themselves; no victim mount, open, or other interactive action is required.\\nS:U - The use-after-free corrupts host-kernel m2m/context/buffer state within a single kernel security authority and does not cross a VM, IOMMU, or sandbox boundary.\\nC:H - The dangling timeout worker calls v4l2_m2m_get_curr_priv and operates on freed or wrong-context m2m/buffer objects after release or cross-session reuse, enabling reclaim-based arbitrary kernel memory disclosure as with other heap UAFs.\\nI:H - The same worker path can double-finish jobs, reset HW, and manipulate freed or concurrently active buffer/context state, providing heap corruption and control-flow hijack primitives consistent with UAF guidance.\\nA:H - Use-after-free or NULL dereference in mtk_jpeg_job_timeout_work reliably causes kernel oops/panic, so availability impact is High.\"}]}], \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"b2f0d2724ba477d326e9d654d4db1c93e98f8b93\", \"lessThan\": \"43872f44eee6c6781fea1348b38885d8e78face9\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b2f0d2724ba477d326e9d654d4db1c93e98f8b93\", \"lessThan\": \"1b1036c60a37a30caf6759a90fe5ecd06ec35590\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b2f0d2724ba477d326e9d654d4db1c93e98f8b93\", \"lessThan\": \"9fec4db7fff54d9b0306a332bab31eac47eeb5f6\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b2f0d2724ba477d326e9d654d4db1c93e98f8b93\", \"lessThan\": \"8254d54d00eb6cdb8367399c7f912eb8d354ecd7\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b2f0d2724ba477d326e9d654d4db1c93e98f8b93\", \"lessThan\": \"6e2f37022f0fc0893da4d85a0500c9d547fffd4c\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b2f0d2724ba477d326e9d654d4db1c93e98f8b93\", \"lessThan\": \"206c857dd17d4d026de85866f1b5f0969f2a109e\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.12\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.12\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.10.210\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.149\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.76\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.15\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.7.3\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.7.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/43872f44eee6c6781fea1348b38885d8e78face9\"}, {\"url\": \"https://git.kernel.org/stable/c/1b1036c60a37a30caf6759a90fe5ecd06ec35590\"}, {\"url\": \"https://git.kernel.org/stable/c/9fec4db7fff54d9b0306a332bab31eac47eeb5f6\"}, {\"url\": \"https://git.kernel.org/stable/c/8254d54d00eb6cdb8367399c7f912eb8d354ecd7\"}, {\"url\": \"https://git.kernel.org/stable/c/6e2f37022f0fc0893da4d85a0500c9d547fffd4c\"}, {\"url\": \"https://git.kernel.org/stable/c/206c857dd17d4d026de85866f1b5f0969f2a109e\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmedia: mtk-jpeg: Fix use after free bug due to error path handling in mtk_jpeg_dec_device_run\\n\\nIn mtk_jpeg_probe, \u0026jpeg-\u003ejob_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. 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}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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