CVE-2025-39720 (GCVE-0-2025-39720)
Vulnerability from cvelistv5
Published
2025-09-05 17:21
Modified
2025-09-29 05:58
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: fix refcount leak causing resource not released
When ksmbd_conn_releasing(opinfo->conn) returns true,the refcount was not
decremented properly, causing a refcount leak that prevents the count from
reaching zero and the memory from being released.
References
Impacted products
{ "containers": { "cna": { "affected": [ { "defaultStatus": "unaffected", "product": "Linux", "programFiles": [ "fs/smb/server/oplock.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "lessThan": "a1d2bab4d53368a526c97aba92671dd71814f95a", "status": "affected", "version": "0626e6641f6b467447c81dd7678a69c66f7746cf", "versionType": "git" }, { "lessThan": "36e010bb865fbaa1202fe9bcce3fd486d6db7606", "status": "affected", "version": "0626e6641f6b467447c81dd7678a69c66f7746cf", "versionType": "git" }, { "lessThan": "9a7abce6e8c0e2145b346a6d4abf0d9655e9b0e8", "status": "affected", "version": "0626e6641f6b467447c81dd7678a69c66f7746cf", "versionType": "git" }, { "lessThan": "89bb430f621124af39bb31763c4a8b504c9651e2", "status": "affected", "version": "0626e6641f6b467447c81dd7678a69c66f7746cf", "versionType": "git" } ] }, { "defaultStatus": "affected", "product": "Linux", "programFiles": [ "fs/smb/server/oplock.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "status": "affected", "version": "5.15" }, { "lessThan": "5.15", "status": "unaffected", "version": "0", "versionType": "semver" }, { "lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.103", "versionType": "semver" }, { "lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.44", "versionType": "semver" }, { "lessThanOrEqual": "6.16.*", "status": "unaffected", "version": "6.16.4", "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": "5.15", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.12.44", "versionStartIncluding": "5.15", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.16.4", "versionStartIncluding": "5.15", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.17", "versionStartIncluding": "5.15", "vulnerable": true } ], "negate": false, "operator": "OR" } ] } ], "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix refcount leak causing resource not released\n\nWhen ksmbd_conn_releasing(opinfo-\u003econn) returns true,the refcount was not\ndecremented properly, causing a refcount leak that prevents the count from\nreaching zero and the memory from being released." } ], "providerMetadata": { "dateUpdated": "2025-09-29T05:58:06.752Z", "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux" }, "references": [ { "url": "https://git.kernel.org/stable/c/a1d2bab4d53368a526c97aba92671dd71814f95a" }, { "url": "https://git.kernel.org/stable/c/36e010bb865fbaa1202fe9bcce3fd486d6db7606" }, { "url": "https://git.kernel.org/stable/c/9a7abce6e8c0e2145b346a6d4abf0d9655e9b0e8" }, { "url": "https://git.kernel.org/stable/c/89bb430f621124af39bb31763c4a8b504c9651e2" } ], "title": "ksmbd: fix refcount leak causing resource not released", "x_generator": { "engine": "bippy-1.2.0" } } }, "cveMetadata": { "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "assignerShortName": "Linux", "cveId": "CVE-2025-39720", "datePublished": "2025-09-05T17:21:28.060Z", "dateReserved": "2025-04-16T07:20:57.117Z", "dateUpdated": "2025-09-29T05:58:06.752Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1", "vulnerability-lookup:meta": { "nvd": "{\"cve\":{\"id\":\"CVE-2025-39720\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-09-05T18:15:49.643\",\"lastModified\":\"2025-09-08T16:25:38.810\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nksmbd: fix refcount leak causing resource not released\\n\\nWhen ksmbd_conn_releasing(opinfo-\u003econn) returns true,the refcount was not\\ndecremented properly, causing a refcount leak that prevents the count from\\nreaching zero and the memory from being released.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/36e010bb865fbaa1202fe9bcce3fd486d6db7606\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/89bb430f621124af39bb31763c4a8b504c9651e2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/9a7abce6e8c0e2145b346a6d4abf0d9655e9b0e8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a1d2bab4d53368a526c97aba92671dd71814f95a\",\"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.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- 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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