{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-68216", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-30T09:28:09.375Z", "datePublished": "2026-08-10T12:00:35.592Z", "dateUpdated": "2026-08-10T12:00:35.592Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-10T12:00:35.592Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: pwc: Return queued buffers on start_streaming() failure\n\nThe vb2 framework hands buffers to the driver via buf_queue() before\ncalling start_streaming(). If start_streaming() returns an error\nwithout first returning those buffers via vb2_buffer_done(),\nvb2_start_streaming() fires WARN_ON(owned_by_drv_count) and the queued\nbuffers leak.\n\npwc's start_streaming() had two early returns that hit this trap:\n-ENODEV when the USB device was already disconnected, and -ERESTARTSYS\nwhen mutex_lock_interruptible() was interrupted by a signal. Call the\nexisting pwc_cleanup_queued_bufs() helper with VB2_BUF_STATE_QUEUED\nbefore returning (matching the state already used by the\npwc_isoc_init() error path in the same function).\n\nThis mirrors the uvcvideo fix in commit 4cf3b6fd54eb (\"media: uvcvideo:\nReturn queued buffers on start_streaming() failure\")."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/media/usb/pwc/pwc-if.c"], "versions": [{"version": "ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478", "lessThan": "f2f9fcacd81953dde6cb86312ab13ca13e689664", "status": "affected", "versionType": "git"}, {"version": "ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478", "lessThan": "5d7cc2634c3843a1414a0f6407aa17f1f91dee60", "status": "affected", "versionType": "git"}, {"version": "ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478", "lessThan": "cb16b79a2be2cec9c3ebe4147490817c4d8b1de3", "status": "affected", "versionType": "git"}, {"version": "ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478", "lessThan": "a4f8f629983f643333e49df90557805469bcbb25", "status": "affected", "versionType": "git"}, {"version": "ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478", "lessThan": "975b2ee20e569d47821e4f6c9761b4664d48a6a4", "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/usb/pwc/pwc-if.c"], "versions": [{"version": "3.5", "status": "affected"}, {"version": "0", "lessThan": "3.5", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.148", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.101", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.42", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.6", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2-rc1", "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": "3.5", "versionEndExcluding": "6.6.148"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.5", "versionEndExcluding": "6.12.101"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.5", "versionEndExcluding": "6.18.42"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.5", "versionEndExcluding": "7.1.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.5", "versionEndExcluding": "7.2-rc1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/f2f9fcacd81953dde6cb86312ab13ca13e689664"}, {"url": "https://git.kernel.org/stable/c/5d7cc2634c3843a1414a0f6407aa17f1f91dee60"}, {"url": "https://git.kernel.org/stable/c/cb16b79a2be2cec9c3ebe4147490817c4d8b1de3"}, {"url": "https://git.kernel.org/stable/c/a4f8f629983f643333e49df90557805469bcbb25"}, {"url": "https://git.kernel.org/stable/c/975b2ee20e569d47821e4f6c9761b4664d48a6a4"}], "title": "media: pwc: Return queued buffers on start_streaming() failure", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/media/usb/pwc/pwc-if.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "f2f9fcacd81953dde6cb86312ab13ca13e689664", "status": "affected", "version": "ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478", "versionType": "git"}, {"lessThan": "5d7cc2634c3843a1414a0f6407aa17f1f91dee60", "status": "affected", "version": "ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478", "versionType": "git"}, {"lessThan": "cb16b79a2be2cec9c3ebe4147490817c4d8b1de3", "status": "affected", "version": "ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478", "versionType": "git"}, {"lessThan": "a4f8f629983f643333e49df90557805469bcbb25", "status": "affected", "version": "ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478", "versionType": "git"}, {"lessThan": "975b2ee20e569d47821e4f6c9761b4664d48a6a4", "status": "affected", "version": "ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/media/usb/pwc/pwc-if.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "3.5"}, {"lessThan": "3.5", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.148", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.101", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.42", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2-rc1", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: pwc: Return queued buffers on start_streaming() failure\n\nThe vb2 framework hands buffers to the driver via buf_queue() before\ncalling start_streaming(). If start_streaming() returns an error\nwithout first returning those buffers via vb2_buffer_done(),\nvb2_start_streaming() fires WARN_ON(owned_by_drv_count) and the queued\nbuffers leak.\n\npwc's start_streaming() had two early returns that hit this trap:\n-ENODEV when the USB device was already disconnected, and -ERESTARTSYS\nwhen mutex_lock_interruptible() was interrupted by a signal. Call the\nexisting pwc_cleanup_queued_bufs() helper with VB2_BUF_STATE_QUEUED\nbefore returning (matching the state already used by the\npwc_isoc_init() error path in the same function).\n\nThis mirrors the uvcvideo fix in commit 4cf3b6fd54eb (\"media: uvcvideo:\nReturn queued buffers on start_streaming() failure\")."}], "id": "CVE-2026-68216", "lastModified": "2026-08-10T13:20:09.527", "metrics": {}, "published": "2026-08-10T13:20:09.527", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5d7cc2634c3843a1414a0f6407aa17f1f91dee60"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/975b2ee20e569d47821e4f6c9761b4664d48a6a4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a4f8f629983f643333e49df90557805469bcbb25"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cb16b79a2be2cec9c3ebe4147490817c4d8b1de3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f2f9fcacd81953dde6cb86312ab13ca13e689664"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Linux kernel: `pwc` media driver resource leak via `start_streaming()` failure", "id": "2513341", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513341"}, "csaw": false, "cvss3": {"cvss3_base_score": "3.3", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L", "status": "draft"}, "cwe": "CWE-772", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nmedia: pwc: Return queued buffers on start_streaming() failure\nThe vb2 framework hands buffers to the driver via buf_queue() before\ncalling start_streaming(). If start_streaming() returns an error\nwithout first returning those buffers via vb2_buffer_done(),\nvb2_start_streaming() fires WARN_ON(owned_by_drv_count) and the queued\nbuffers leak.\npwc's start_streaming() had two early returns that hit this trap:\n-ENODEV when the USB device was already disconnected, and -ERESTARTSYS\nwhen mutex_lock_interruptible() was interrupted by a signal. Call the\nexisting pwc_cleanup_queued_bufs() helper with VB2_BUF_STATE_QUEUED\nbefore returning (matching the state already used by the\npwc_isoc_init() error path in the same function).\nThis mirrors the uvcvideo fix in commit 4cf3b6fd54eb (\"media: uvcvideo:\nReturn queued buffers on start_streaming() failure\").", "A flaw was found in the Linux kernel's `pwc` media driver. When the `start_streaming()` function fails, it does not properly return queued buffers, leading to a resource leak. This can occur if the USB device is disconnected or if a mutex lock is interrupted. A local attacker could potentially exploit this to cause a Denial of Service (DoS) due to resource exhaustion."], "name": "CVE-2026-68216", "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": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:enterprise_linux_nvidia:", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux for NVIDIA 26"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "rhcos", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-08-10T12:00:35Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-68216\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-68216\nhttps://git.kernel.org/stable/c/5d7cc2634c3843a1414a0f6407aa17f1f91dee60\nhttps://git.kernel.org/stable/c/975b2ee20e569d47821e4f6c9761b4664d48a6a4\nhttps://git.kernel.org/stable/c/a4f8f629983f643333e49df90557805469bcbb25\nhttps://git.kernel.org/stable/c/cb16b79a2be2cec9c3ebe4147490817c4d8b1de3\nhttps://git.kernel.org/stable/c/f2f9fcacd81953dde6cb86312ab13ca13e689664"], "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478,f2f9fcacd81953dde6cb86312ab13ca13e689664)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478,5d7cc2634c3843a1414a0f6407aa17f1f91dee60)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478,cb16b79a2be2cec9c3ebe4147490817c4d8b1de3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478,a4f8f629983f643333e49df90557805469bcbb25)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ceede9fa8939e40ad0ddb4ad1355f45c6f1d3478,975b2ee20e569d47821e4f6c9761b4664d48a6a4)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "3.5"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,3.5)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.148,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.101,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.42,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.6,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-10T14:30:04.126679+00:00", "updated": "2026-08-10T18:15:11.241526+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-775"]}