| { |
| "containers": { |
| "cna": { |
| "providerMetadata": { |
| "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" |
| }, |
| "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" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2022-49398", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
