CVE-2023-52491

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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->curr_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."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The bug is reached via the Mediatek JPEG V4L2 m2m device node (/dev/videoN) through ordinary open/ioctl/STREAMON/qbuf and close() paths in mtk_jpeg_dec_device_run, requiring local process access rather than network or adjacent packet delivery.\nAC:L - An attacker can deterministically force the mtk_jpeg_set_dec_dst error path (plane/size mismatch under their control), which schedules the 1s job_timeout_work and then job_finish; 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": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c"], "versions": [{"version": "b2f0d2724ba477d326e9d654d4db1c93e98f8b93", "lessThan": "43872f44eee6c6781fea1348b38885d8e78face9", "status": "affected", "versionType": "git"}, {"version": "b2f0d2724ba477d326e9d654d4db1c93e98f8b93", "lessThan": "1b1036c60a37a30caf6759a90fe5ecd06ec35590", "status": "affected", "versionType": "git"}, {"version": "b2f0d2724ba477d326e9d654d4db1c93e98f8b93", "lessThan": "9fec4db7fff54d9b0306a332bab31eac47eeb5f6", "status": "affected", "versionType": "git"}, {"version": "b2f0d2724ba477d326e9d654d4db1c93e98f8b93", "lessThan": "8254d54d00eb6cdb8367399c7f912eb8d354ecd7", "status": "affected", "versionType": "git"}, {"version": "b2f0d2724ba477d326e9d654d4db1c93e98f8b93", "lessThan": "6e2f37022f0fc0893da4d85a0500c9d547fffd4c", "status": "affected", "versionType": "git"}, {"version": "b2f0d2724ba477d326e9d654d4db1c93e98f8b93", "lessThan": "206c857dd17d4d026de85866f1b5f0969f2a109e", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c"], "versions": [{"version": "4.12", "status": "affected"}, {"version": "0", "lessThan": "4.12", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.210", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.149", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.76", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.15", 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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, &jpeg->job_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. 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->curr_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."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.210", "versionStartIncluding": "4.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.149", "versionStartIncluding": "4.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.76", "versionStartIncluding": "4.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.15", "versionStartIncluding": "4.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.7.3", "versionStartIncluding": "4.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.8", "versionStartIncluding": "4.12"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T09:10:13.876Z"}}}, "cveMetadata": {"cveId": "CVE-2023-52491", "state": "PUBLISHED", "dateUpdated": "2026-08-05T09:10:13.876Z", "dateReserved": "2024-02-20T12:30:33.303Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-02-29T15:52:09.891Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "43872f44eee6c6781fea1348b38885d8e78face9", "status": "affected", "version": "b2f0d2724ba477d326e9d654d4db1c93e98f8b93", "versionType": "git"}, {"lessThan": "1b1036c60a37a30caf6759a90fe5ecd06ec35590", "status": "affected", "version": "b2f0d2724ba477d326e9d654d4db1c93e98f8b93", "versionType": "git"}, {"lessThan": "9fec4db7fff54d9b0306a332bab31eac47eeb5f6", "status": "affected", "version": "b2f0d2724ba477d326e9d654d4db1c93e98f8b93", "versionType": "git"}, {"lessThan": "8254d54d00eb6cdb8367399c7f912eb8d354ecd7", "status": "affected", "version": "b2f0d2724ba477d326e9d654d4db1c93e98f8b93", "versionType": "git"}, {"lessThan": "6e2f37022f0fc0893da4d85a0500c9d547fffd4c", "status": "affected", "version": "b2f0d2724ba477d326e9d654d4db1c93e98f8b93", "versionType": "git"}, {"lessThan": "206c857dd17d4d026de85866f1b5f0969f2a109e", "status": "affected", "version": "b2f0d2724ba477d326e9d654d4db1c93e98f8b93", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.12"}, {"lessThan": "4.12", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.210", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.149", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.76", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.15", "versionType": "semver"}, {"lessThanOrEqual": "6.7.*", "status": "unaffected", "version": "6.7.3", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.8", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "FFC7FC62-DD78-4B12-9C6A-57C3E33A3410", "versionEndExcluding": "5.10.210", "versionStartIncluding": "4.12", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "0D0465BB-4053-4E15-9137-6696EBAE90FD", "versionEndExcluding": "5.15.149", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "32F0FEB3-5FE1-4400-A56D-886F09BE872E", "versionEndExcluding": "6.1.76", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "87C718CB-AE3D-4B07-B4D9-BFF64183C468", "versionEndExcluding": "6.6.15", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "58FD5308-148A-40D3-B36A-0CA6B434A8BF", "versionEndExcluding": "6.7.3", "versionStartIncluding": "6.7", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "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, &jpeg->job_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. 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->curr_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, &jpeg->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->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. Entonces v4l2_m2m_job_finish solo se llamar\u00e1 en mtk_jpeg_job_timeout_work o mtk_jpeg_dec_device_run."}], "id": "CVE-2023-52491", "lastModified": "2026-08-04T10:18:30.207", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2023-52491", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-08-08T18:46:39.566289Z", "version": "2.0.3"}}]}, "published": "2024-03-11T18:15:16.807", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1b1036c60a37a30caf6759a90fe5ecd06ec35590"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/206c857dd17d4d026de85866f1b5f0969f2a109e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/43872f44eee6c6781fea1348b38885d8e78face9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6e2f37022f0fc0893da4d85a0500c9d547fffd4c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8254d54d00eb6cdb8367399c7f912eb8d354ecd7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9fec4db7fff54d9b0306a332bab31eac47eeb5f6"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1b1036c60a37a30caf6759a90fe5ecd06ec35590"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/206c857dd17d4d026de85866f1b5f0969f2a109e"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/43872f44eee6c6781fea1348b38885d8e78face9"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6e2f37022f0fc0893da4d85a0500c9d547fffd4c"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8254d54d00eb6cdb8367399c7f912eb8d354ecd7"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9fec4db7fff54d9b0306a332bab31eac47eeb5f6"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: media: mtk-jpeg: Fix use after free bug due to error path handling in mtk_jpeg_dec_device_run", "id": "2269185", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2269185"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.1", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-416", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nmedia: mtk-jpeg: Fix use after free bug due to error path handling in mtk_jpeg_dec_device_run\nIn mtk_jpeg_probe, &jpeg->job_timeout_work is bound with\nmtk_jpeg_job_timeout_work.\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.\nThere are two methods to trigger the bug. 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.\nCPU0 CPU1\nmtk_jpeg_dec_... |\nstart worker |\n|mtk_jpeg_job_timeout_work\nmtk_jpeg_remove |\nv4l2_m2m_release |\nkfree(m2m_dev); |\n|\n| v4l2_m2m_get_curr_priv\n| m2m_dev->curr_ctx //use\nIf we close the file descriptor, which will call mtk_jpeg_release,\nit will have a similar sequence.\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."], "name": "CVE-2023-52491", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-02-29T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-52491\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-52491\nhttps://lore.kernel.org/linux-cve-announce/20240229155245.1571576-32-lee@kernel.org/T"], "threat_severity": "Low"}

{}