{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-49895","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-05-01T14:05:17.243Z","datePublished":"2025-05-01T14:10:37.707Z","dateUpdated":"2026-05-11T19:08:49.162Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T19:08:49.162Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ncxl/region: Fix decoder allocation crash\n\nWhen an intermediate port's decoders have been exhausted by existing\nregions, and creating a new region with the port in question in it's\nhierarchical path is attempted, cxl_port_attach_region() fails to find a\nport decoder (as would be expected), and drops into the failure / cleanup\npath.\n\nHowever, during cleanup of the region reference, a sanity check attempts\nto dereference the decoder, which in the above case didn't exist. This\ncauses a NULL pointer dereference BUG.\n\nTo fix this, refactor the decoder allocation and de-allocation into\nhelper routines, and in this 'free' routine, check that the decoder,\n@cxld, is valid before attempting any operations on it."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/cxl/core/region.c"],"versions":[{"version":"384e624bb211b406db40edc900bb51af8bb267d0","lessThan":"c6813b5610ac53af73edd87a660d23a0511faa47","status":"affected","versionType":"git"},{"version":"384e624bb211b406db40edc900bb51af8bb267d0","lessThan":"71ee71d7adcba648077997a29a91158d20c40b09","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/cxl/core/region.c"],"versions":[{"version":"6.0","status":"affected"},{"version":"0","lessThan":"6.0","status":"unaffected","versionType":"semver"},{"version":"6.0.8","lessThanOrEqual":"6.0.*","status":"unaffected","versionType":"semver"},{"version":"6.1","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.0.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/c6813b5610ac53af73edd87a660d23a0511faa47"},{"url":"https://git.kernel.org/stable/c/71ee71d7adcba648077997a29a91158d20c40b09"}],"title":"cxl/region: Fix decoder allocation crash","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-476","lang":"en","description":"CWE-476 NULL Pointer Dereference"}]}],"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":{"timestamp":"2025-10-01T16:02:07.580579Z","id":"CVE-2022-49895","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-10-01T16:02:10.001Z"}}]}}