{"id":"CVE-2026-88383","title":"libical 4.0.6 contains an incompatible function pointer in icalparameter_string_to_kind()","summary":"libical 4.0.6 contains an incompatible function pointer in icalparameter_string_to_kind(). When parsing iCalendar data containing a parameterized property, the function passes icalparameter_compare_kind_map() to bsearch() through an inco…","severity":"medium","cvss":6.2,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-843"],"vendor":"Red Hat","product":"Red Hat Enterprise Linux 7","affected":["enterprise_linux 10","enterprise_linux 6","enterprise_linux 7","enterprise_linux 8","enterprise_linux 9"],"published":"2026-09-24","updated":"2026-10-06","sourceUpdated":"2026-10-06T18:16:57.693","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-88383","references":[{"url":"https://github.com/libical/libical/issues/1361","label":"cve@mitre.org"},{"url":"https://github.com/libical/libical/pull/1363","label":"cve@mitre.org"},{"url":"https://github.com/libical/libical/pull/1363/changes/557d9c043733b33a8511dce41fdeeb508460d5a9","label":"cve@mitre.org"},{"url":"https://github.com/libical/libical/issues/1361","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-88383.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-88383"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2540578"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-88383"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-88383"}],"tags":["nvd","cve.org","csaf","vex","red-hat","exploit-available"],"epss":0.00202,"epssPercentile":0.09998,"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-06T15:34:46.122313Z"},"scores":{"nvd":6.2,"vendor":6.5,"adp":6.2},"ingestedAt":"2026-09-24T16:47:15.848Z","slug":"CVE-2026-88383","body":"## Overview\n\nlibical 4.0.6 contains an incompatible function pointer in icalparameter_string_to_kind(). When parsing iCalendar data containing a parameterized property, the function passes icalparameter_compare_kind_map() to bsearch() through an incompatible comparator function pointer type. bsearch() invokes the callback through the mismatched type, resulting in undefined behavior and process termination, leading to denial of service.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-10-06 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-88383.json)","depth":"twilight","depthScore":46,"depthScoreParts":{"impact":34.1,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[{"seq":216683,"id":"CVE-2026-88383","ts":1791314053264,"field":"cvss","old":"6.5","new":"6.2"},{"seq":216642,"id":"CVE-2026-88383","ts":1791310382161,"field":"exploit_available","old":"false","new":"true"},{"seq":210655,"id":"CVE-2026-88383","ts":1790322139706,"field":"cvss","old":null,"new":"6.5"},{"seq":210654,"id":"CVE-2026-88383","ts":1790322139706,"field":"severity","old":"none","new":"medium"}]}