CVE-2025-38692 (GCVE-0-2025-38692)
Vulnerability from cvelistv5
Published
2025-09-04 15:32
Modified
2025-09-29 05:56
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
exfat: add cluster chain loop check for dir
An infinite loop may occur if the following conditions occur due to
file system corruption.
(1) Condition for exfat_count_dir_entries() to loop infinitely.
- The cluster chain includes a loop.
- There is no UNUSED entry in the cluster chain.
(2) Condition for exfat_create_upcase_table() to loop infinitely.
- The cluster chain of the root directory includes a loop.
- There are no UNUSED entry and up-case table entry in the cluster
chain of the root directory.
(3) Condition for exfat_load_bitmap() to loop infinitely.
- The cluster chain of the root directory includes a loop.
- There are no UNUSED entry and bitmap entry in the cluster chain
of the root directory.
(4) Condition for exfat_find_dir_entry() to loop infinitely.
- The cluster chain includes a loop.
- The unused directory entries were exhausted by some operation.
(5) Condition for exfat_check_dir_empty() to loop infinitely.
- The cluster chain includes a loop.
- The unused directory entries were exhausted by some operation.
- All files and sub-directories under the directory are deleted.
This commit adds checks to break the above infinite loop.
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| ▼ | Linux | Linux |
Version: 1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003 Version: 1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003 Version: 1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003 Version: 1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003 Version: 1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003 |
||||||
|
|||||||||
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"fs/exfat/dir.c",
"fs/exfat/fatent.c",
"fs/exfat/namei.c",
"fs/exfat/super.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "868f23286c1a13162330fa6c614fe350f78e3f82",
"status": "affected",
"version": "1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003",
"versionType": "git"
},
{
"lessThan": "aa8fe7b7b73d4c9a41bb96cb3fb3092f794ecb33",
"status": "affected",
"version": "1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003",
"versionType": "git"
},
{
"lessThan": "e2066ca3ef49a30920d8536fa366b2a183a808ee",
"status": "affected",
"version": "1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003",
"versionType": "git"
},
{
"lessThan": "4c3cda20c4cf1871e27868d08fda06b79bc7d568",
"status": "affected",
"version": "1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003",
"versionType": "git"
},
{
"lessThan": "99f9a97dce39ad413c39b92c90393bbd6778f3fd",
"status": "affected",
"version": "1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"fs/exfat/dir.c",
"fs/exfat/fatent.c",
"fs/exfat/namei.c",
"fs/exfat/super.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.7"
},
{
"lessThan": "5.7",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.103",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.43",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.15.*",
"status": "unaffected",
"version": "6.15.11",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.16.*",
"status": "unaffected",
"version": "6.16.2",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.17",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.103",
"versionStartIncluding": "5.7",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.43",
"versionStartIncluding": "5.7",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.15.11",
"versionStartIncluding": "5.7",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.16.2",
"versionStartIncluding": "5.7",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.17",
"versionStartIncluding": "5.7",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nexfat: add cluster chain loop check for dir\n\nAn infinite loop may occur if the following conditions occur due to\nfile system corruption.\n\n(1) Condition for exfat_count_dir_entries() to loop infinitely.\n - The cluster chain includes a loop.\n - There is no UNUSED entry in the cluster chain.\n\n(2) Condition for exfat_create_upcase_table() to loop infinitely.\n - The cluster chain of the root directory includes a loop.\n - There are no UNUSED entry and up-case table entry in the cluster\n chain of the root directory.\n\n(3) Condition for exfat_load_bitmap() to loop infinitely.\n - The cluster chain of the root directory includes a loop.\n - There are no UNUSED entry and bitmap entry in the cluster chain\n of the root directory.\n\n(4) Condition for exfat_find_dir_entry() to loop infinitely.\n - The cluster chain includes a loop.\n - The unused directory entries were exhausted by some operation.\n\n(5) Condition for exfat_check_dir_empty() to loop infinitely.\n - The cluster chain includes a loop.\n - The unused directory entries were exhausted by some operation.\n - All files and sub-directories under the directory are deleted.\n\nThis commit adds checks to break the above infinite loop."
}
],
"providerMetadata": {
"dateUpdated": "2025-09-29T05:56:08.225Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/868f23286c1a13162330fa6c614fe350f78e3f82"
},
{
"url": "https://git.kernel.org/stable/c/aa8fe7b7b73d4c9a41bb96cb3fb3092f794ecb33"
},
{
"url": "https://git.kernel.org/stable/c/e2066ca3ef49a30920d8536fa366b2a183a808ee"
},
{
"url": "https://git.kernel.org/stable/c/4c3cda20c4cf1871e27868d08fda06b79bc7d568"
},
{
"url": "https://git.kernel.org/stable/c/99f9a97dce39ad413c39b92c90393bbd6778f3fd"
}
],
"title": "exfat: add cluster chain loop check for dir",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-38692",
"datePublished": "2025-09-04T15:32:46.004Z",
"dateReserved": "2025-04-16T04:51:24.032Z",
"dateUpdated": "2025-09-29T05:56:08.225Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2025-38692\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-09-04T16:15:37.447\",\"lastModified\":\"2025-09-05T17:47:24.833\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nexfat: add cluster chain loop check for dir\\n\\nAn infinite loop may occur if the following conditions occur due to\\nfile system corruption.\\n\\n(1) Condition for exfat_count_dir_entries() to loop infinitely.\\n - The cluster chain includes a loop.\\n - There is no UNUSED entry in the cluster chain.\\n\\n(2) Condition for exfat_create_upcase_table() to loop infinitely.\\n - The cluster chain of the root directory includes a loop.\\n - There are no UNUSED entry and up-case table entry in the cluster\\n chain of the root directory.\\n\\n(3) Condition for exfat_load_bitmap() to loop infinitely.\\n - The cluster chain of the root directory includes a loop.\\n - There are no UNUSED entry and bitmap entry in the cluster chain\\n of the root directory.\\n\\n(4) Condition for exfat_find_dir_entry() to loop infinitely.\\n - The cluster chain includes a loop.\\n - The unused directory entries were exhausted by some operation.\\n\\n(5) Condition for exfat_check_dir_empty() to loop infinitely.\\n - The cluster chain includes a loop.\\n - The unused directory entries were exhausted by some operation.\\n - All files and sub-directories under the directory are deleted.\\n\\nThis commit adds checks to break the above infinite loop.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/4c3cda20c4cf1871e27868d08fda06b79bc7d568\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/868f23286c1a13162330fa6c614fe350f78e3f82\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/99f9a97dce39ad413c39b92c90393bbd6778f3fd\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/aa8fe7b7b73d4c9a41bb96cb3fb3092f794ecb33\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e2066ca3ef49a30920d8536fa366b2a183a808ee\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…