{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2023-53458", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-10-01T11:39:39.399Z", "datePublished": "2025-10-01T11:42:29.665Z", "dateUpdated": "2026-01-05T10:20:51.971Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-01-05T10:20:51.971Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: cx23885: Fix a null-ptr-deref bug in buffer_prepare() and buffer_finish()\n\nWhen the driver calls cx23885_risc_buffer() to prepare the buffer, the\nfunction call dma_alloc_coherent may fail, resulting in a empty buffer\nrisc->cpu. Later when we free the buffer or access the buffer, null ptr\nderef is triggered.\n\nThis bug is similar to the following one:\nhttps://git.linuxtv.org/media_stage.git/commit/?id=2b064d91440b33fba5b452f2d1b31f13ae911d71.\n\nWe believe the bug can be also dynamically triggered from user side.\nSimilarly, we fix this by checking the return value of cx23885_risc_buffer()\nand the value of risc->cpu before buffer free."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/media/pci/cx23885/cx23885-core.c", "drivers/media/pci/cx23885/cx23885-video.c"], "versions": [{"version": "4d63a25c4523b5d18e5307897d56aff785f43bf5", "lessThan": "f0a06203f2fe63f04311467200c99c4ee1926578", "status": "affected", "versionType": "git"}, {"version": "4d63a25c4523b5d18e5307897d56aff785f43bf5", "lessThan": "6738841f6fcf23e9fc30e2449f32fc84ee19c6f1", "status": "affected", "versionType": "git"}, {"version": "4d63a25c4523b5d18e5307897d56aff785f43bf5", "lessThan": "5b8e5e28e85a546dfccc3895befe0e823fdd7c89", "status": "affected", "versionType": "git"}, {"version": "4d63a25c4523b5d18e5307897d56aff785f43bf5", "lessThan": "47e8b73bc35d7c54642f78e498697692f6358996", "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/pci/cx23885/cx23885-core.c", "drivers/media/pci/cx23885/cx23885-video.c"], "versions": [{"version": "3.18", "status": "affected"}, {"version": "0", "lessThan": "3.18", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.113", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.30", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.3.4", "lessThanOrEqual": "6.3.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.4", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "5.15.113"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "6.1.30"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "6.3.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.18", "versionEndExcluding": "6.4"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/f0a06203f2fe63f04311467200c99c4ee1926578"}, {"url": "https://git.kernel.org/stable/c/6738841f6fcf23e9fc30e2449f32fc84ee19c6f1"}, {"url": "https://git.kernel.org/stable/c/5b8e5e28e85a546dfccc3895befe0e823fdd7c89"}, {"url": "https://git.kernel.org/stable/c/47e8b73bc35d7c54642f78e498697692f6358996"}], "title": "media: cx23885: Fix a null-ptr-deref bug in buffer_prepare() and buffer_finish()", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"bugzilla": {"description": "kernel: media: cx23885: Fix a null-ptr-deref bug in buffer_prepare() and buffer_finish()", "id": "2400690", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2400690"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nmedia: cx23885: Fix a null-ptr-deref bug in buffer_prepare() and buffer_finish()\nWhen the driver calls cx23885_risc_buffer() to prepare the buffer, the\nfunction call dma_alloc_coherent may fail, resulting in a empty buffer\nrisc->cpu. Later when we free the buffer or access the buffer, null ptr\nderef is triggered.\nThis bug is similar to the following one:\nhttps://git.linuxtv.org/media_stage.git/commit/?id=2b064d91440b33fba5b452f2d1b31f13ae911d71.\nWe believe the bug can be also dynamically triggered from user side.\nSimilarly, we fix this by checking the return value of cx23885_risc_buffer()\nand the value of risc->cpu before buffer free."], "name": "CVE-2023-53458", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "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"}, {"cpe": "cpe:/o:redhat:rhivos:1", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat In-Vehicle Operating System 1"}], "public_date": "2025-10-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-53458\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-53458\nhttps://lore.kernel.org/linux-cve-announce/2025100105-CVE-2023-53458-8239@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-10-02T08:40:03.785653+00:00", "updated": "2025-10-02T08:40:03.785716+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}