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vuln-cve/data/2023/53xxx/CVE-2023-53840.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2023-53840",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2025-12-09T01:27:17.826Z",
"datePublished": "2025-12-09T01:29:56.848Z",
"dateUpdated": "2026-05-11T19:52:32.046Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-05-11T19:52:32.046Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: early: xhci-dbc: Fix a potential out-of-bound memory access\n\nIf xdbc_bulk_write() fails, the values in 'buf' can be anything. So the\nstring is not guaranteed to be NULL terminated when xdbc_trace() is called.\n\nReserve an extra byte, which will be zeroed automatically because 'buf' is\na static variable, in order to avoid troubles, should it happen."
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/usb/early/xhci-dbc.c"
],
"versions": [
{
"version": "aeb9dd1de98c1a5f2007ea5d2a154c1244caf8a0",
"lessThan": "e8fb0f13e45cf361fd06593d3cb2d89915cd3bd0",
"status": "affected",
"versionType": "git"
},
{
"version": "aeb9dd1de98c1a5f2007ea5d2a154c1244caf8a0",
"lessThan": "351c8d8650d1ccc006255fa01f98b6c6496a02e5",
"status": "affected",
"versionType": "git"
},
{
"version": "aeb9dd1de98c1a5f2007ea5d2a154c1244caf8a0",
"lessThan": "df7c8aba7309f4dc55df94e06b67f576c0f52406",
"status": "affected",
"versionType": "git"
},
{
"version": "aeb9dd1de98c1a5f2007ea5d2a154c1244caf8a0",
"lessThan": "a4a97ab3db5c081eb6e7dba91306adefb461e0bd",
"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/early/xhci-dbc.c"
],
"versions": [
{
"version": "4.12",
"status": "affected"
},
{
"version": "0",
"lessThan": "4.12",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.15.99",
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.1.16",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.2.3",
"lessThanOrEqual": "6.2.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.3",
"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": "4.12",
"versionEndExcluding": "5.15.99"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.12",
"versionEndExcluding": "6.1.16"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.12",
"versionEndExcluding": "6.2.3"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.12",
"versionEndExcluding": "6.3"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/e8fb0f13e45cf361fd06593d3cb2d89915cd3bd0"
},
{
"url": "https://git.kernel.org/stable/c/351c8d8650d1ccc006255fa01f98b6c6496a02e5"
},
{
"url": "https://git.kernel.org/stable/c/df7c8aba7309f4dc55df94e06b67f576c0f52406"
},
{
"url": "https://git.kernel.org/stable/c/a4a97ab3db5c081eb6e7dba91306adefb461e0bd"
}
],
"title": "usb: early: xhci-dbc: Fix a potential out-of-bound memory access",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
}
}