| { |
| "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: gadget: ncm: Avoid dropping datagrams of properly parsed NTBs\n\nIt is observed sometimes when tethering is used over NCM with Windows 11\nas host, at some instances, the gadget_giveback has one byte appended at\nthe end of a proper NTB. When the NTB is parsed, unwrap call looks for\nany leftover bytes in SKB provided by u_ether and if there are any pending\nbytes, it treats them as a separate NTB and parses it. But in case the\nsecond NTB (as per unwrap call) is faulty/corrupt, all the datagrams that\nwere parsed properly in the first NTB and saved in rx_list are dropped.\n\nAdding a few custom traces showed the following:\n[002] d..1 7828.532866: dwc3_gadget_giveback: ep1out:\nreq 000000003868811a length 1025/16384 zsI ==> 0\n[002] d..1 7828.532867: ncm_unwrap_ntb: K: ncm_unwrap_ntb toprocess: 1025\n[002] d..1 7828.532867: ncm_unwrap_ntb: K: ncm_unwrap_ntb nth: 1751999342\n[002] d..1 7828.532868: ncm_unwrap_ntb: K: ncm_unwrap_ntb seq: 0xce67\n[002] d..1 7828.532868: ncm_unwrap_ntb: K: ncm_unwrap_ntb blk_len: 0x400\n[002] d..1 7828.532868: ncm_unwrap_ntb: K: ncm_unwrap_ntb ndp_len: 0x10\n[002] d..1 7828.532869: ncm_unwrap_ntb: K: Parsed NTB with 1 frames\n\nIn this case, the giveback is of 1025 bytes and block length is 1024.\nThe rest 1 byte (which is 0x00) won't be parsed resulting in drop of\nall datagrams in rx_list.\n\nSame is case with packets of size 2048:\n[002] d..1 7828.557948: dwc3_gadget_giveback: ep1out:\nreq 0000000011dfd96e length 2049/16384 zsI ==> 0\n[002] d..1 7828.557949: ncm_unwrap_ntb: K: ncm_unwrap_ntb nth: 1751999342\n[002] d..1 7828.557950: ncm_unwrap_ntb: K: ncm_unwrap_ntb blk_len: 0x800\n\nLecroy shows one byte coming in extra confirming that the byte is coming\nin from PC:\n\n Transfer 2959 - Bytes Transferred(1025) Timestamp((18.524 843 590)\n - Transaction 8391 - Data(1025 bytes) Timestamp(18.524 843 590)\n --- Packet 4063861\n Data(1024 bytes)\n Duration(2.117us) Idle(14.700ns) Timestamp(18.524 843 590)\n --- Packet 4063863\n Data(1 byte)\n Duration(66.160ns) Time(282.000ns) Timestamp(18.524 845 722)\n\nAccording to Windows driver, no ZLP is needed if wBlockLength is non-zero,\nbecause the non-zero wBlockLength has already told the function side the\nsize of transfer to be expected. However, there are in-market NCM devices\nthat rely on ZLP as long as the wBlockLength is multiple of wMaxPacketSize.\nTo deal with such devices, it pads an extra 0 at end so the transfer is no\nlonger multiple of wMaxPacketSize." |
| } |
| ], |
| "affected": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "drivers/usb/gadget/function/f_ncm.c" |
| ], |
| "versions": [ |
| { |
| "version": "9f6ce4240a2bf456402c15c06768059e5973f28c", |
| "lessThan": "059285e04ebb273d32323fbad5431c5b94f77e48", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "9f6ce4240a2bf456402c15c06768059e5973f28c", |
| "lessThan": "a31cf46d108dabce3df80b3e5c07661e24912151", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "9f6ce4240a2bf456402c15c06768059e5973f28c", |
| "lessThan": "57ca0e16f393bb21d69734e536e383a3a4c665fd", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "9f6ce4240a2bf456402c15c06768059e5973f28c", |
| "lessThan": "2cb66b62a5d64ccf09b0591ab86fb085fa491fc5", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "9f6ce4240a2bf456402c15c06768059e5973f28c", |
| "lessThan": "35b604a37ec70d68b19dafd10bbacf1db505c9ca", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "9f6ce4240a2bf456402c15c06768059e5973f28c", |
| "lessThan": "2b7ec68869d50ea998908af43b643bca7e54577e", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "9f6ce4240a2bf456402c15c06768059e5973f28c", |
| "lessThan": "c7f43900bc723203d7554d299a2ce844054fab8e", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "9f6ce4240a2bf456402c15c06768059e5973f28c", |
| "lessThan": "76c51146820c5dac629f21deafab0a7039bc3ccd", |
| "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/gadget/function/f_ncm.c" |
| ], |
| "versions": [ |
| { |
| "version": "2.6.38", |
| "status": "affected" |
| }, |
| { |
| "version": "0", |
| "lessThan": "2.6.38", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "4.19.308", |
| "lessThanOrEqual": "4.19.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.4.270", |
| "lessThanOrEqual": "5.4.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.10.211", |
| "lessThanOrEqual": "5.10.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.15.150", |
| "lessThanOrEqual": "5.15.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.1.80", |
| "lessThanOrEqual": "6.1.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.6.19", |
| "lessThanOrEqual": "6.6.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.7.7", |
| "lessThanOrEqual": "6.7.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.8", |
| "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": "2.6.38", |
| "versionEndExcluding": "4.19.308" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "2.6.38", |
| "versionEndExcluding": "5.4.270" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "2.6.38", |
| "versionEndExcluding": "5.10.211" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "2.6.38", |
| "versionEndExcluding": "5.15.150" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "2.6.38", |
| "versionEndExcluding": "6.1.80" |
| }, |
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| "versionStartIncluding": "2.6.38", |
| "versionEndExcluding": "6.6.19" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "2.6.38", |
| "versionEndExcluding": "6.7.7" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "2.6.38", |
| "versionEndExcluding": "6.8" |
| } |
| ] |
| } |
| ] |
| } |
| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/059285e04ebb273d32323fbad5431c5b94f77e48" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/a31cf46d108dabce3df80b3e5c07661e24912151" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/57ca0e16f393bb21d69734e536e383a3a4c665fd" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/2cb66b62a5d64ccf09b0591ab86fb085fa491fc5" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/35b604a37ec70d68b19dafd10bbacf1db505c9ca" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/2b7ec68869d50ea998908af43b643bca7e54577e" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/c7f43900bc723203d7554d299a2ce844054fab8e" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/76c51146820c5dac629f21deafab0a7039bc3ccd" |
| } |
| ], |
| "title": "usb: gadget: ncm: Avoid dropping datagrams of properly parsed NTBs", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2024-27405", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
