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vuln-cve/data/2025/39xxx/CVE-2025-39838.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2025-39838",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2025-04-16T07:20:57.141Z",
"datePublished": "2025-09-19T15:26:13.506Z",
"dateUpdated": "2026-11-05T21:12:59.903Z"
},
"containers": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-05-11T21:37:25.302Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: prevent NULL pointer dereference in UTF16 conversion\n\nThere can be a NULL pointer dereference bug here. NULL is passed to\n__cifs_sfu_make_node without checks, which passes it unchecked to\ncifs_strndup_to_utf16, which in turn passes it to\ncifs_local_to_utf16_bytes where '*from' is dereferenced, causing a crash.\n\nThis patch adds a check for NULL 'src' in cifs_strndup_to_utf16 and\nreturns NULL early to prevent dereferencing NULL pointer.\n\nFound by Linux Verification Center (linuxtesting.org) with SVACE"
}
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"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"fs/smb/client/cifs_unicode.c"
],
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{
"version": "41d3f256c6a5e41eb32b87168399c0facd512dc0",
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],
"versions": [
{
"version": "6.12",
"status": "affected"
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{
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"lessThan": "6.12",
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"versionType": "semver"
},
{
"version": "6.12.46",
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
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},
{
"version": "6.16.6",
"lessThanOrEqual": "6.16.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.17",
"lessThanOrEqual": "*",
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"versionType": "original_commit_for_fix"
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]
}
],
"cpeApplicability": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.12",
"versionEndExcluding": "6.12.46"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.12",
"versionEndExcluding": "6.16.6"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionEndExcluding": "6.17"
}
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],
"references": [
{
"url": "https://git.kernel.org/stable/c/1f797f062b5cf13a1c2bcc23285361baaa7c9260"
},
{
"url": "https://git.kernel.org/stable/c/3c26a8d30ed6b53a52a023ec537dc50a6d34a67a"
},
{
"url": "https://git.kernel.org/stable/c/70bccd9855dae56942f2b18a08ba137bb54093a0"
}
],
"title": "cifs: prevent NULL pointer dereference in UTF16 conversion",
"x_generator": {
"engine": "bippy-1.2.0"
}
},
"adp": [
{
"title": "CVE Program Container",
"references": [
{
"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
}
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"providerMetadata": {
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE",
"dateUpdated": "2025-11-03T17:43:52.863Z"
}
},
{
"x_adpType": "supplier",
"providerMetadata": {
"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
"shortName": "siemens-SADP",
"dateUpdated": "2026-05-12T12:07:26.229Z"
},
"affected": [
{
"vendor": "Siemens",
"product": "SIMATIC CN 4100",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "V5.0",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
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],
"references": [
{
"url": "https://cert-portal.siemens.com/productcert/html/ssa-032379.html"
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{
"metrics": [
{
"other": {
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"content": {
"id": "CVE-2025-39838",
"role": "CISA Coordinator",
"options": [
{
"Exploitation": "none"
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{
"Automatable": "no"
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{
"Technical Impact": "partial"
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],
"version": "2.0.3",
"timestamp": "2026-11-05T21:12:29.483732Z"
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],
"title": "CISA ADP Vulnrichment",
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}