CVE-2020-36784 (GCVE-0-2020-36784)
Vulnerability from cvelistv5
Published
2024-02-28 08:13
Modified
2026-05-11 13:42
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
i2c: cadence: fix reference leak when pm_runtime_get_sync fails
The PM reference count is not expected to be incremented on
return in functions cdns_i2c_master_xfer and cdns_reg_slave.
However, pm_runtime_get_sync will increment pm usage counter
even failed. Forgetting to putting operation will result in a
reference leak here.
Replace it with pm_runtime_resume_and_get to keep usage
counter balanced.
References
| URL | Tags | |
|---|---|---|
Impacted products
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-04T17:37:07.220Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/30410519328c94367e561fd878e5f0d3a0303585"
},
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/d57ff04e0ed6f3be1682ae861ead33f879225e07"
},
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/a45fc41beed8e0fe31864619c34aa00797fb60c1"
},
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/23ceb8462dc6f4b4decdb5536a7e5fc477cdf0b6"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2020-36784",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-09-10T16:01:21.710777Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2024-09-11T17:33:42.628Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/i2c/busses/i2c-cadence.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "30410519328c94367e561fd878e5f0d3a0303585",
"status": "affected",
"version": "7fa32329ca03148fb2c07b4ef3247b8fc0488d6a",
"versionType": "git"
},
{
"lessThan": "d57ff04e0ed6f3be1682ae861ead33f879225e07",
"status": "affected",
"version": "7fa32329ca03148fb2c07b4ef3247b8fc0488d6a",
"versionType": "git"
},
{
"lessThan": "a45fc41beed8e0fe31864619c34aa00797fb60c1",
"status": "affected",
"version": "7fa32329ca03148fb2c07b4ef3247b8fc0488d6a",
"versionType": "git"
},
{
"lessThan": "23ceb8462dc6f4b4decdb5536a7e5fc477cdf0b6",
"status": "affected",
"version": "7fa32329ca03148fb2c07b4ef3247b8fc0488d6a",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/i2c/busses/i2c-cadence.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.5"
},
{
"lessThan": "4.5",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.37",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.11.*",
"status": "unaffected",
"version": "5.11.21",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.12.*",
"status": "unaffected",
"version": "5.12.4",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "5.13",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.37",
"versionStartIncluding": "4.5",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.11.21",
"versionStartIncluding": "4.5",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.12.4",
"versionStartIncluding": "4.5",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.13",
"versionStartIncluding": "4.5",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ni2c: cadence: fix reference leak when pm_runtime_get_sync fails\n\nThe PM reference count is not expected to be incremented on\nreturn in functions cdns_i2c_master_xfer and cdns_reg_slave.\n\nHowever, pm_runtime_get_sync will increment pm usage counter\neven failed. Forgetting to putting operation will result in a\nreference leak here.\n\nReplace it with pm_runtime_resume_and_get to keep usage\ncounter balanced."
}
],
"providerMetadata": {
"dateUpdated": "2026-05-11T13:42:50.017Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/30410519328c94367e561fd878e5f0d3a0303585"
},
{
"url": "https://git.kernel.org/stable/c/d57ff04e0ed6f3be1682ae861ead33f879225e07"
},
{
"url": "https://git.kernel.org/stable/c/a45fc41beed8e0fe31864619c34aa00797fb60c1"
},
{
"url": "https://git.kernel.org/stable/c/23ceb8462dc6f4b4decdb5536a7e5fc477cdf0b6"
}
],
"title": "i2c: cadence: fix reference leak when pm_runtime_get_sync fails",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2020-36784",
"datePublished": "2024-02-28T08:13:05.418Z",
"dateReserved": "2024-02-26T17:07:27.435Z",
"dateUpdated": "2026-05-11T13:42:50.017Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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.
- 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.
Loading…
Loading…