{"id":"CVE-2023-53049","title":"usb: ucsi: Fix NULL pointer deref in ucsi_connector_change()","summary":"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 ca…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= bdc62f2bae8fb0e8e99574de5232f0a3c54a27df < a6adfe9bbd6ac11e398b54ccd99a0f8eea09f3c0","Linux >= bdc62f2bae8fb0e8e99574de5232f0a3c54a27df < 7dd27aed9c456670b3882877ef17a48195f21693","Linux >= bdc62f2bae8fb0e8e99574de5232f0a3c54a27df < 1c5abcb13491da8c049f20462189c12c753ba978","Linux >= bdc62f2bae8fb0e8e99574de5232f0a3c54a27df < 7ef0423e43f877a328454059d46763043ce3da44","Linux >= bdc62f2bae8fb0e8e99574de5232f0a3c54a27df < f87fb985452ab2083967103ac00bfd68fb182764","Linux 5.5"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-05T20:15:26.195648Z"},"published":"2025-05-02","updated":"2026-11-05","sourceUpdated":"2026-11-05T20:20:56.363Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2023-53049","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"}],"tags":["cve.org"],"epss":0.00202,"epssPercentile":0.1014,"ingestedAt":"2026-11-05T22:38:31.758Z","slug":"CVE-2023-53049","body":"## Overview\n\nIn 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.\n\n## Affected\n\n- `Linux >= bdc62f2bae8fb0e8e99574de5232f0a3c54a27df < a6adfe9bbd6ac11e398b54ccd99a0f8eea09f3c0`\n- `Linux >= bdc62f2bae8fb0e8e99574de5232f0a3c54a27df < 7dd27aed9c456670b3882877ef17a48195f21693`\n- `Linux >= bdc62f2bae8fb0e8e99574de5232f0a3c54a27df < 1c5abcb13491da8c049f20462189c12c753ba978`\n- `Linux >= bdc62f2bae8fb0e8e99574de5232f0a3c54a27df < 7ef0423e43f877a328454059d46763043ce3da44`\n- `Linux >= bdc62f2bae8fb0e8e99574de5232f0a3c54a27df < f87fb985452ab2083967103ac00bfd68fb182764`\n- `Linux 5.5`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}