| { |
| "containers": { |
| "cna": { |
| "providerMetadata": { |
| "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" |
| }, |
| "descriptions": [ |
| { |
| "lang": "en", |
| "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: ucan: fix out of bound read in strscpy() source\n\nCommit 7fdaf8966aae (\"can: ucan: use strscpy() to instead of strncpy()\")\nunintentionally introduced a one byte out of bound read on strscpy()'s\nsource argument (which is kind of ironic knowing that strscpy() is meant\nto be a more secure alternative :)).\n\nLet's consider below buffers:\n\n dest[len + 1]; /* will be NUL terminated */\n src[len]; /* may not be NUL terminated */\n\nWhen doing:\n\n strncpy(dest, src, len);\n dest[len] = '\\0';\n\nstrncpy() will read up to len bytes from src.\n\nOn the other hand:\n\n strscpy(dest, src, len + 1);\n\nwill read up to len + 1 bytes from src, that is to say, an out of bound\nread of one byte will occur on src if it is not NUL terminated. Note\nthat the src[len] byte is never copied, but strscpy() still needs to\nread it to check whether a truncation occurred or not.\n\nThis exact pattern happened in ucan.\n\nThe root cause is that the source is not NUL terminated. Instead of\ndoing a copy in a local buffer, directly NUL terminate it as soon as\nusb_control_msg() returns. With this, the local firmware_str[] variable\ncan be removed.\n\nOn top of this do a couple refactors:\n\n - ucan_ctl_payload->raw is only used for the firmware string, so\n rename it to ucan_ctl_payload->fw_str and change its type from u8 to\n char.\n\n - ucan_device_request_in() is only used to retrieve the firmware\n string, so rename it to ucan_get_fw_str() and refactor it to make it\n directly handle all the string termination logic." |
| } |
| ], |
| "affected": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "drivers/net/can/usb/ucan.c" |
| ], |
| "versions": [ |
| { |
| "version": "7fdaf8966aae476deafe11f9a0067ff588615444", |
| "lessThan": "cc29775a8a72d7f3b56cc026796ad99bd65804a7", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "7fdaf8966aae476deafe11f9a0067ff588615444", |
| "lessThan": "8cec9e314d3360fc1d8346297c41a6ee45cb45a9", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "7fdaf8966aae476deafe11f9a0067ff588615444", |
| "lessThan": "a4994161a61bc8fd71d105c579d847cefee99262", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "7fdaf8966aae476deafe11f9a0067ff588615444", |
| "lessThan": "1d22a122ffb116c3cf78053e812b8b21f8852ee9", |
| "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/net/can/usb/ucan.c" |
| ], |
| "versions": [ |
| { |
| "version": "6.2", |
| "status": "affected" |
| }, |
| { |
| "version": "0", |
| "lessThan": "6.2", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.6.85", |
| "lessThanOrEqual": "6.6.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.12.21", |
| "lessThanOrEqual": "6.12.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.13.9", |
| "lessThanOrEqual": "6.13.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.14", |
| "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": "6.2", |
| "versionEndExcluding": "6.6.85" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "6.2", |
| "versionEndExcluding": "6.12.21" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "6.2", |
| "versionEndExcluding": "6.13.9" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "6.2", |
| "versionEndExcluding": "6.14" |
| } |
| ] |
| } |
| ] |
| } |
| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/cc29775a8a72d7f3b56cc026796ad99bd65804a7" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/8cec9e314d3360fc1d8346297c41a6ee45cb45a9" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/a4994161a61bc8fd71d105c579d847cefee99262" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/1d22a122ffb116c3cf78053e812b8b21f8852ee9" |
| } |
| ], |
| "title": "can: ucan: fix out of bound read in strscpy() source", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2025-22003", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
