{"id":"CVE-2022-49653","state":"PUBLISHED","title":"i2c: piix4: Fix a memory leak in the EFCH MMIO support","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ni2c: piix4: Fix a memory leak in the EFCH MMIO support\n\nThe recently added support for EFCH MMIO regions introduced a memory\nleak in that code path. The leak is caused by the fact that\nrelease_resource() merely removes the resource from the tree but does\nnot free its memory. We need to call release_mem_region() instead,\nwhich does free the memory. As a nice side effect, this brings back\nsome symmetry between the legacy and MMIO paths.","publishedAt":"2025-02-26T02:23:54.484Z","updatedAt":"2026-05-23T15:22:40.191Z","severity":{"score":5.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"4b965566ca26e83553d92b8c57050e5d59911806","status":"affected","lessThan":"d2bf1a6480e8d44658a8ac3bdcec081238873212","versionType":"git"},{"version":"7c148722d074c29fb998578eea5de3c14b9608c9","status":"affected","lessThan":"a3263e4cf8265f0c9eb0ed8a9b50f132c7a42e19","versionType":"git"},{"version":"7c148722d074c29fb998578eea5de3c14b9608c9","status":"affected","lessThan":"8ad59b397f86a4d8014966fdc0552095a0c4fb2b","versionType":"git"},{"version":"f48190bca4b1a397f2e050efea2c8e8e72049ec8","status":"affected","versionType":"git"},{"version":"5.15.42","status":"affected","lessThan":"5.15.54","versionType":"semver"},{"version":"5.17.10","status":"affected","lessThan":"5.18","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/i2c/busses/i2c-piix4.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.18","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.18","versionType":"semver"},{"version":"5.15.54","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.18.11","status":"unaffected","lessThanOrEqual":"5.18.*","versionType":"semver"},{"version":"5.19","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-piix4.c"]}],"references":["https://git.kernel.org/stable/c/d2bf1a6480e8d44658a8ac3bdcec081238873212","https://git.kernel.org/stable/c/a3263e4cf8265f0c9eb0ed8a9b50f132c7a42e19","https://git.kernel.org/stable/c/8ad59b397f86a4d8014966fdc0552095a0c4fb2b"],"weaknesses":["CWE-401"],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/49xxx/CVE-2022-49653.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-49653","state":"PUBLISHED","datePublished":"2025-02-26T02:23:54.484Z","dateUpdated":"2026-05-23T15:22:40.191Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-02-26T02:21:30.433Z"},"containers":{"cna":{"title":"i2c: piix4: Fix a memory leak in the EFCH MMIO support","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ni2c: piix4: Fix a memory leak in the EFCH MMIO support\n\nThe recently added support for EFCH MMIO regions introduced a memory\nleak in that code path. The leak is caused by the fact that\nrelease_resource() merely removes the resource from the tree but does\nnot free its memory. We need to call release_mem_region() instead,\nwhich does free the memory. As a nice side effect, this brings back\nsome symmetry between the legacy and MMIO paths."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"4b965566ca26e83553d92b8c57050e5d59911806","status":"affected","lessThan":"d2bf1a6480e8d44658a8ac3bdcec081238873212","versionType":"git"},{"version":"7c148722d074c29fb998578eea5de3c14b9608c9","status":"affected","lessThan":"a3263e4cf8265f0c9eb0ed8a9b50f132c7a42e19","versionType":"git"},{"version":"7c148722d074c29fb998578eea5de3c14b9608c9","status":"affected","lessThan":"8ad59b397f86a4d8014966fdc0552095a0c4fb2b","versionType":"git"},{"version":"f48190bca4b1a397f2e050efea2c8e8e72049ec8","status":"affected","versionType":"git"},{"version":"5.15.42","status":"affected","lessThan":"5.15.54","versionType":"semver"},{"version":"5.17.10","status":"affected","lessThan":"5.18","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/i2c/busses/i2c-piix4.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.18","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.18","versionType":"semver"},{"version":"5.15.54","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.18.11","status":"unaffected","lessThanOrEqual":"5.18.*","versionType":"semver"},{"version":"5.19","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-piix4.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/d2bf1a6480e8d44658a8ac3bdcec081238873212"},{"url":"https://git.kernel.org/stable/c/a3263e4cf8265f0c9eb0ed8a9b50f132c7a42e19"},{"url":"https://git.kernel.org/stable/c/8ad59b397f86a4d8014966fdc0552095a0c4fb2b"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-23T15:22:40.191Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.42","versionEndExcluding":"5.15.54"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"5.18.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"5.19"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17.10"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.5,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"id":"CVE-2022-49653","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2025-10-01T19:33:38.203252Z"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-401","lang":"en","type":"CWE","description":"CWE-401 Missing Release of Memory after Effective Lifetime"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-10-01T19:36:48.233Z"}}]}}}