{"id":"CVE-2023-53049","state":"PUBLISHED","title":"usb: ucsi: Fix NULL pointer deref in ucsi_connector_change()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: ucsi: Fix NULL pointer deref in ucsi_connector_change()\n\nWhen ucsi_init() fails, ucsi->connector is NULL, yet in case of\nucsi_acpi we may still get events which cause the ucs_acpi code to call\nucsi_connector_change(), which then derefs the NULL ucsi->connector\npointer.\n\nFix this by not setting ucsi->ntfy inside ucsi_init() until ucsi_init()\nhas succeeded, so that ucsi_connector_change() ignores the events\nbecause UCSI_ENABLE_NTFY_CONNECTOR_CHANGE is not set in the ntfy mask.","publishedAt":"2025-05-02T15:55:05.568Z","updatedAt":"2026-05-11T19:37:34.574Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"bdc62f2bae8fb0e8e99574de5232f0a3c54a27df","status":"affected","lessThan":"a6adfe9bbd6ac11e398b54ccd99a0f8eea09f3c0","versionType":"git"},{"version":"bdc62f2bae8fb0e8e99574de5232f0a3c54a27df","status":"affected","lessThan":"7dd27aed9c456670b3882877ef17a48195f21693","versionType":"git"},{"version":"bdc62f2bae8fb0e8e99574de5232f0a3c54a27df","status":"affected","lessThan":"1c5abcb13491da8c049f20462189c12c753ba978","versionType":"git"},{"version":"bdc62f2bae8fb0e8e99574de5232f0a3c54a27df","status":"affected","lessThan":"7ef0423e43f877a328454059d46763043ce3da44","versionType":"git"},{"version":"bdc62f2bae8fb0e8e99574de5232f0a3c54a27df","status":"affected","lessThan":"f87fb985452ab2083967103ac00bfd68fb182764","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/typec/ucsi/ucsi.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.5","versionType":"semver"},{"version":"5.10.177","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.105","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.22","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2.9","status":"unaffected","lessThanOrEqual":"6.2.*","versionType":"semver"},{"version":"6.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/typec/ucsi/ucsi.c"]}],"references":["https://git.kernel.org/stable/c/a6adfe9bbd6ac11e398b54ccd99a0f8eea09f3c0","https://git.kernel.org/stable/c/7dd27aed9c456670b3882877ef17a48195f21693","https://git.kernel.org/stable/c/1c5abcb13491da8c049f20462189c12c753ba978","https://git.kernel.org/stable/c/7ef0423e43f877a328454059d46763043ce3da44","https://git.kernel.org/stable/c/f87fb985452ab2083967103ac00bfd68fb182764"],"weaknesses":[],"ingestedAt":"2026-10-29T20:06:33.064Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/53xxx/CVE-2023-53049.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-53049","state":"PUBLISHED","datePublished":"2025-05-02T15:55:05.568Z","dateUpdated":"2026-05-11T19:37:34.574Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-04-16T07:18:43.828Z"},"containers":{"cna":{"title":"usb: ucsi: Fix NULL pointer deref in ucsi_connector_change()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: ucsi: Fix NULL pointer deref in ucsi_connector_change()\n\nWhen ucsi_init() fails, ucsi->connector is NULL, yet in case of\nucsi_acpi we may still get events which cause the ucs_acpi code to call\nucsi_connector_change(), which then derefs the NULL ucsi->connector\npointer.\n\nFix this by not setting ucsi->ntfy inside ucsi_init() until ucsi_init()\nhas succeeded, so that ucsi_connector_change() ignores the events\nbecause UCSI_ENABLE_NTFY_CONNECTOR_CHANGE is not set in the ntfy mask."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"bdc62f2bae8fb0e8e99574de5232f0a3c54a27df","status":"affected","lessThan":"a6adfe9bbd6ac11e398b54ccd99a0f8eea09f3c0","versionType":"git"},{"version":"bdc62f2bae8fb0e8e99574de5232f0a3c54a27df","status":"affected","lessThan":"7dd27aed9c456670b3882877ef17a48195f21693","versionType":"git"},{"version":"bdc62f2bae8fb0e8e99574de5232f0a3c54a27df","status":"affected","lessThan":"1c5abcb13491da8c049f20462189c12c753ba978","versionType":"git"},{"version":"bdc62f2bae8fb0e8e99574de5232f0a3c54a27df","status":"affected","lessThan":"7ef0423e43f877a328454059d46763043ce3da44","versionType":"git"},{"version":"bdc62f2bae8fb0e8e99574de5232f0a3c54a27df","status":"affected","lessThan":"f87fb985452ab2083967103ac00bfd68fb182764","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/typec/ucsi/ucsi.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.5","versionType":"semver"},{"version":"5.10.177","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.105","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.22","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2.9","status":"unaffected","lessThanOrEqual":"6.2.*","versionType":"semver"},{"version":"6.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/typec/ucsi/ucsi.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/a6adfe9bbd6ac11e398b54ccd99a0f8eea09f3c0"},{"url":"https://git.kernel.org/stable/c/7dd27aed9c456670b3882877ef17a48195f21693"},{"url":"https://git.kernel.org/stable/c/1c5abcb13491da8c049f20462189c12c753ba978"},{"url":"https://git.kernel.org/stable/c/7ef0423e43f877a328454059d46763043ce3da44"},{"url":"https://git.kernel.org/stable/c/f87fb985452ab2083967103ac00bfd68fb182764"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:37:34.574Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"5.10.177"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"5.15.105"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"6.1.22"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"6.2.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"6.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}