{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2022-49398", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-02-26T02:08:31.563Z", "datePublished": "2025-02-26T02:12:27.141Z", "dateUpdated": "2025-05-04T12:44:36.334Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T12:44:36.334Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: dwc3: gadget: Replace list_for_each_entry_safe() if using giveback\n\nThe list_for_each_entry_safe() macro saves the current item (n) and\nthe item after (n+1), so that n can be safely removed without\ncorrupting the list. However, when traversing the list and removing\nitems using gadget giveback, the DWC3 lock is briefly released,\nallowing other routines to execute. There is a situation where, while\nitems are being removed from the cancelled_list using\ndwc3_gadget_ep_cleanup_cancelled_requests(), the pullup disable\nroutine is running in parallel (due to UDC unbind). As the cleanup\nroutine removes n, and the pullup disable removes n+1, once the\ncleanup retakes the DWC3 lock, it references a request who was already\nremoved/handled. With list debug enabled, this leads to a panic.\nEnsure all instances of the macro are replaced where gadget giveback\nis used.\n\nExample call stack:\n\nThread#1:\n__dwc3_gadget_ep_set_halt() - CLEAR HALT\n -> dwc3_gadget_ep_cleanup_cancelled_requests()\n ->list_for_each_entry_safe()\n ->dwc3_gadget_giveback(n)\n ->dwc3_gadget_del_and_unmap_request()- n deleted[cancelled_list]\n ->spin_unlock\n ->Thread#2 executes\n ...\n ->dwc3_gadget_giveback(n+1)\n ->Already removed!\n\nThread#2:\ndwc3_gadget_pullup()\n ->waiting for dwc3 spin_lock\n ...\n ->Thread#1 released lock\n ->dwc3_stop_active_transfers()\n ->dwc3_remove_requests()\n ->fetches n+1 item from cancelled_list (n removed by Thread#1)\n ->dwc3_gadget_giveback()\n ->dwc3_gadget_del_and_unmap_request()- n+1 deleted[cancelled_list]\n ->spin_unlock"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/usb/dwc3/gadget.c"], "versions": [{"version": "d4f1afe5e896c18ae01099a85dab5e1a198bd2a8", "lessThan": "1c6e5dc3b639c96e6839a8d1b8e951923fdfd34a", "status": "affected", "versionType": "git"}, {"version": "d4f1afe5e896c18ae01099a85dab5e1a198bd2a8", "lessThan": "2424307cdf421ac72075a1384eae4e4199ab6457", "status": "affected", "versionType": "git"}, {"version": "d4f1afe5e896c18ae01099a85dab5e1a198bd2a8", "lessThan": "26a7e6832afe9d9a991cfd9015177f083cf959cc", "status": "affected", "versionType": "git"}, {"version": "d4f1afe5e896c18ae01099a85dab5e1a198bd2a8", "lessThan": "bf594d1d0c1d7b895954018043536ffd327844f9", "status": "affected", "versionType": "git"}, {"version": "d7ff2e3ff0e09d57b43014fe26b13bb3c9677254", "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/usb/dwc3/gadget.c"], "versions": [{"version": "5.0", "status": "affected"}, {"version": "0", "lessThan": "5.0", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.47", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.17.15", "lessThanOrEqual": "5.17.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.18.4", "lessThanOrEqual": "5.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.19", "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": "5.0", "versionEndExcluding": "5.15.47"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0", "versionEndExcluding": "5.17.15"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0", "versionEndExcluding": "5.18.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0", "versionEndExcluding": "5.19"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19.57"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/1c6e5dc3b639c96e6839a8d1b8e951923fdfd34a"}, {"url": "https://git.kernel.org/stable/c/2424307cdf421ac72075a1384eae4e4199ab6457"}, {"url": "https://git.kernel.org/stable/c/26a7e6832afe9d9a991cfd9015177f083cf959cc"}, {"url": "https://git.kernel.org/stable/c/bf594d1d0c1d7b895954018043536ffd327844f9"}], "title": "usb: dwc3: gadget: Replace list_for_each_entry_safe() if using giveback", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: dwc3: gadget: Replace list_for_each_entry_safe() if using giveback\n\nThe list_for_each_entry_safe() macro saves the current item (n) and\nthe item after (n+1), so that n can be safely removed without\ncorrupting the list. However, when traversing the list and removing\nitems using gadget giveback, the DWC3 lock is briefly released,\nallowing other routines to execute. There is a situation where, while\nitems are being removed from the cancelled_list using\ndwc3_gadget_ep_cleanup_cancelled_requests(), the pullup disable\nroutine is running in parallel (due to UDC unbind). As the cleanup\nroutine removes n, and the pullup disable removes n+1, once the\ncleanup retakes the DWC3 lock, it references a request who was already\nremoved/handled. With list debug enabled, this leads to a panic.\nEnsure all instances of the macro are replaced where gadget giveback\nis used.\n\nExample call stack:\n\nThread#1:\n__dwc3_gadget_ep_set_halt() - CLEAR HALT\n -> dwc3_gadget_ep_cleanup_cancelled_requests()\n ->list_for_each_entry_safe()\n ->dwc3_gadget_giveback(n)\n ->dwc3_gadget_del_and_unmap_request()- n deleted[cancelled_list]\n ->spin_unlock\n ->Thread#2 executes\n ...\n ->dwc3_gadget_giveback(n+1)\n ->Already removed!\n\nThread#2:\ndwc3_gadget_pullup()\n ->waiting for dwc3 spin_lock\n ...\n ->Thread#1 released lock\n ->dwc3_stop_active_transfers()\n ->dwc3_remove_requests()\n ->fetches n+1 item from cancelled_list (n removed by Thread#1)\n ->dwc3_gadget_giveback()\n ->dwc3_gadget_del_and_unmap_request()- n+1 deleted[cancelled_list]\n ->spin_unlock"}], "id": "CVE-2022-49398", "lastModified": "2025-02-26T07:01:16.377", "metrics": {}, "published": "2025-02-26T07:01:16.377", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1c6e5dc3b639c96e6839a8d1b8e951923fdfd34a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2424307cdf421ac72075a1384eae4e4199ab6457"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/26a7e6832afe9d9a991cfd9015177f083cf959cc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bf594d1d0c1d7b895954018043536ffd327844f9"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"affected_release": [{"advisory": "RHSA-2022:7683", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-425.3.1.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2022-11-08T00:00:00Z"}, {"advisory": "RHSA-2022:8267", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-162.6.1.el9_1", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2022-11-15T00:00:00Z"}, {"advisory": "RHSA-2022:8267", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-162.6.1.el9_1", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2022-11-15T00:00:00Z"}], "bugzilla": {"description": "kernel: usb: dwc3: gadget: Replace list_for_each_entry_safe() if using giveback", "id": "2348309", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2348309"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nusb: dwc3: gadget: Replace list_for_each_entry_safe() if using giveback\nThe list_for_each_entry_safe() macro saves the current item (n) and\nthe item after (n+1), so that n can be safely removed without\ncorrupting the list. However, when traversing the list and removing\nitems using gadget giveback, the DWC3 lock is briefly released,\nallowing other routines to execute. There is a situation where, while\nitems are being removed from the cancelled_list using\ndwc3_gadget_ep_cleanup_cancelled_requests(), the pullup disable\nroutine is running in parallel (due to UDC unbind). As the cleanup\nroutine removes n, and the pullup disable removes n+1, once the\ncleanup retakes the DWC3 lock, it references a request who was already\nremoved/handled. With list debug enabled, this leads to a panic.\nEnsure all instances of the macro are replaced where gadget giveback\nis used.\nExample call stack:\nThread#1:\n__dwc3_gadget_ep_set_halt() - CLEAR HALT\n-> dwc3_gadget_ep_cleanup_cancelled_requests()\n->list_for_each_entry_safe()\n->dwc3_gadget_giveback(n)\n->dwc3_gadget_del_and_unmap_request()- n deleted[cancelled_list]\n->spin_unlock\n->Thread#2 executes\n...\n->dwc3_gadget_giveback(n+1)\n->Already removed!\nThread#2:\ndwc3_gadget_pullup()\n->waiting for dwc3 spin_lock\n...\n->Thread#1 released lock\n->dwc3_stop_active_transfers()\n->dwc3_remove_requests()\n->fetches n+1 item from cancelled_list (n removed by Thread#1)\n->dwc3_gadget_giveback()\n->dwc3_gadget_del_and_unmap_request()- n+1 deleted[cancelled_list]\n->spin_unlock"], "name": "CVE-2022-49398", "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": "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-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-02-26T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-49398\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-49398\nhttps://lore.kernel.org/linux-cve-announce/2025022650-CVE-2022-49398-9274@gregkh/T"], "threat_severity": "Moderate"}