CVE-2025-38431 (GCVE-0-2025-38431)
Vulnerability from cvelistv5
Published
2025-07-25 14:22
Modified
2025-07-28 04:22
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
smb: client: fix regression with native SMB symlinks
Some users and customers reported that their backup/copy tools started
to fail when the directory being copied contained symlink targets that
the client couldn't parse - even when those symlinks weren't followed.
Fix this by allowing lstat(2) and readlink(2) to succeed even when the
client can't resolve the symlink target, restoring old behavior.
References
Impacted products
{ "containers": { "cna": { "affected": [ { "defaultStatus": "unaffected", "product": "Linux", "programFiles": [ "fs/smb/client/reparse.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "lessThan": "6ddaf7567080c7de2e0c99efca2ee1e6b79beea5", "status": "affected", "version": "12b466eb52d926802b6898d2cb7e67386467f54a", "versionType": "git" }, { "lessThan": "ff8abbd248c1f52df0c321690b88454b13ff54b2", "status": "affected", "version": "12b466eb52d926802b6898d2cb7e67386467f54a", "versionType": "git" } ] }, { "defaultStatus": "affected", "product": "Linux", "programFiles": [ "fs/smb/client/reparse.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "status": "affected", "version": "6.14" }, { "lessThan": "6.14", "status": "unaffected", "version": "0", "versionType": "semver" }, { "lessThanOrEqual": "6.15.*", "status": "unaffected", "version": "6.15.5", "versionType": "semver" }, { "lessThanOrEqual": "*", "status": "unaffected", "version": "6.16", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "cpeMatch": [ { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.15.5", "versionStartIncluding": "6.14", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.16", "versionStartIncluding": "6.14", "vulnerable": true } ], "negate": false, "operator": "OR" } ] } ], "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix regression with native SMB symlinks\n\nSome users and customers reported that their backup/copy tools started\nto fail when the directory being copied contained symlink targets that\nthe client couldn\u0027t parse - even when those symlinks weren\u0027t followed.\n\nFix this by allowing lstat(2) and readlink(2) to succeed even when the\nclient can\u0027t resolve the symlink target, restoring old behavior." } ], "providerMetadata": { "dateUpdated": "2025-07-28T04:22:03.224Z", "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux" }, "references": [ { "url": "https://git.kernel.org/stable/c/6ddaf7567080c7de2e0c99efca2ee1e6b79beea5" }, { "url": "https://git.kernel.org/stable/c/ff8abbd248c1f52df0c321690b88454b13ff54b2" } ], "title": "smb: client: fix regression with native SMB symlinks", "x_generator": { "engine": "bippy-1.2.0" } } }, "cveMetadata": { "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "assignerShortName": "Linux", "cveId": "CVE-2025-38431", "datePublished": "2025-07-25T14:22:34.363Z", "dateReserved": "2025-04-16T04:51:24.015Z", "dateUpdated": "2025-07-28T04:22:03.224Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1", "vulnerability-lookup:meta": { "nvd": "{\"cve\":{\"id\":\"CVE-2025-38431\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-07-25T15:15:28.133\",\"lastModified\":\"2025-07-25T15:29:19.837\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nsmb: client: fix regression with native SMB symlinks\\n\\nSome users and customers reported that their backup/copy tools started\\nto fail when the directory being copied contained symlink targets that\\nthe client couldn\u0027t parse - even when those symlinks weren\u0027t followed.\\n\\nFix this by allowing lstat(2) and readlink(2) to succeed even when the\\nclient can\u0027t resolve the symlink target, restoring old behavior.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/6ddaf7567080c7de2e0c99efca2ee1e6b79beea5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ff8abbd248c1f52df0c321690b88454b13ff54b2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}" } }
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Sightings
Author | Source | Type | Date |
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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.
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