{"id":"CVE-2020-36784","state":"PUBLISHED","title":"i2c: cadence: fix reference leak when pm_runtime_get_sync fails","description":"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.","publishedAt":"2024-02-28T08:13:05.418Z","updatedAt":"2026-05-11T13:42:50.017Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"7fa32329ca03148fb2c07b4ef3247b8fc0488d6a","status":"affected","lessThan":"30410519328c94367e561fd878e5f0d3a0303585","versionType":"git"},{"version":"7fa32329ca03148fb2c07b4ef3247b8fc0488d6a","status":"affected","lessThan":"d57ff04e0ed6f3be1682ae861ead33f879225e07","versionType":"git"},{"version":"7fa32329ca03148fb2c07b4ef3247b8fc0488d6a","status":"affected","lessThan":"a45fc41beed8e0fe31864619c34aa00797fb60c1","versionType":"git"},{"version":"7fa32329ca03148fb2c07b4ef3247b8fc0488d6a","status":"affected","lessThan":"23ceb8462dc6f4b4decdb5536a7e5fc477cdf0b6","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/i2c/busses/i2c-cadence.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.5","versionType":"semver"},{"version":"5.10.37","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.11.21","status":"unaffected","lessThanOrEqual":"5.11.*","versionType":"semver"},{"version":"5.12.4","status":"unaffected","lessThanOrEqual":"5.12.*","versionType":"semver"},{"version":"5.13","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/i2c/busses/i2c-cadence.c"]}],"references":["https://git.kernel.org/stable/c/30410519328c94367e561fd878e5f0d3a0303585","https://git.kernel.org/stable/c/d57ff04e0ed6f3be1682ae861ead33f879225e07","https://git.kernel.org/stable/c/a45fc41beed8e0fe31864619c34aa00797fb60c1","https://git.kernel.org/stable/c/23ceb8462dc6f4b4decdb5536a7e5fc477cdf0b6"],"weaknesses":[],"ingestedAt":"2026-10-29T19:47:24.909Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2020/36xxx/CVE-2020-36784.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2020-36784","state":"PUBLISHED","datePublished":"2024-02-28T08:13:05.418Z","dateUpdated":"2026-05-11T13:42:50.017Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-02-26T17:07:27.435Z"},"containers":{"cna":{"title":"i2c: cadence: fix reference leak when pm_runtime_get_sync fails","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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"7fa32329ca03148fb2c07b4ef3247b8fc0488d6a","status":"affected","lessThan":"30410519328c94367e561fd878e5f0d3a0303585","versionType":"git"},{"version":"7fa32329ca03148fb2c07b4ef3247b8fc0488d6a","status":"affected","lessThan":"d57ff04e0ed6f3be1682ae861ead33f879225e07","versionType":"git"},{"version":"7fa32329ca03148fb2c07b4ef3247b8fc0488d6a","status":"affected","lessThan":"a45fc41beed8e0fe31864619c34aa00797fb60c1","versionType":"git"},{"version":"7fa32329ca03148fb2c07b4ef3247b8fc0488d6a","status":"affected","lessThan":"23ceb8462dc6f4b4decdb5536a7e5fc477cdf0b6","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/i2c/busses/i2c-cadence.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.5","versionType":"semver"},{"version":"5.10.37","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.11.21","status":"unaffected","lessThanOrEqual":"5.11.*","versionType":"semver"},{"version":"5.12.4","status":"unaffected","lessThanOrEqual":"5.12.*","versionType":"semver"},{"version":"5.13","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/i2c/busses/i2c-cadence.c"]}],"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T13:42:50.017Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.5","versionEndExcluding":"5.10.37"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.5","versionEndExcluding":"5.11.21"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.5","versionEndExcluding":"5.12.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.5","versionEndExcluding":"5.13"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CVE Program Container","references":[{"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","tags":["x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-04T17:37:07.220Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2020-36784","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-09-10T16:01:21.710777Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-09-11T17:33:42.628Z"}}]}}}