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Prior to version 3.21.0, `xf_Pointer_New` frees `cursorPixels` on failure, then `pointer_free` calls `xf_Pointer_Free` and frees it again, triggering ASan UAF. A malicious server can trigger a client‑side use after free, causing a crash (DoS) and potential heap corruption with code‑execution risk depending on allocator behavior and surrounding heap layout. Version 3.21.0 contains a patch for the issue."}],"source":{"advisory":"GHSA-qcrr-85qx-4p6x","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-01-20T15:29:59.841389Z","id":"CVE-2026-23883","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"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":"2026-01-20T15:30:10.352Z"}},{"affected":[{"cpes":["cpe:/o:redhat:enterprise_linux_eus:10.0"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux AppStream EUS (v. 10.0)","vendor":"Red Hat"},{"cpes":["cpe:/o:redhat:enterprise_linux:10.1"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux AppStream (v. 10)","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:enterprise_linux:8::appstream"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux AppStream (v. 8)","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:rhel_e4s:9.0::appstream"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux AppStream E4S (v.9.0)","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:rhel_e4s:9.2::appstream"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux AppStream E4S (v.9.2)","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:rhel_eus:9.4::appstream"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux AppStream EUS (v.9.4)","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:rhel_eus:9.6::appstream"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux AppStream EUS (v.9.6)","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:enterprise_linux:9::appstream"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux AppStream (v. 9)","vendor":"Red Hat"},{"cpes":["cpe:/o:redhat:enterprise_linux_eus:10.0"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)","vendor":"Red Hat"},{"cpes":["cpe:/o:redhat:enterprise_linux:10.1"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:enterprise_linux:8::crb"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux CRB (v. 8)","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:rhel_eus:9.4::crb"],"defaultStatus":"affected","product":"Red Hat CodeReady Linux Builder EUS (v.9.4)","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:rhel_eus:9.6::crb"],"defaultStatus":"affected","product":"Red Hat CodeReady Linux Builder EUS (v.9.6)","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:enterprise_linux:9::crb"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)","vendor":"Red Hat"},{"cpes":["cpe:/o:redhat:enterprise_linux:6"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux 6","vendor":"Red Hat"},{"cpes":["cpe:/o:redhat:enterprise_linux:7"],"defaultStatus":"unaffected","product":"Red Hat Enterprise Linux 7","vendor":"Red Hat"}],"datePublic":"2026-01-19T17:15:55.735Z","descriptions":[{"lang":"en","value":"A flaw was found in FreeRDP, a free implementation of the Remote Desktop Protocol. A malicious server can exploit a use-after-free vulnerability by enticing a client to connect to it. This can lead to a client-side crash, resulting in a Denial of Service (DoS), and potentially allow for arbitrary code execution due to heap corruption."}],"metrics":[{"other":{"content":{"namespace":"https://access.redhat.com/security/updates/classification/","value":"Important"},"type":"Red Hat severity rating"}},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.6,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H","version":"3.1"},"format":"CVSS"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-416","description":"Use After Free","lang":"en","type":"CWE"}]}],"references":[{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-23883"},{"name":"RHBZ#2430885","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2430885"},{"tags":["x_sadp-csaf-vex"],"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23883.json"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:2952"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:2222"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:2081"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:2770"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:2824"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:2736"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:3037"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:2048"}],"solutions":[{"lang":"en","value":"RHSA-2026:2952: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)"},{"lang":"en","value":"RHSA-2026:2222: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)"},{"lang":"en","value":"RHSA-2026:2081: Red Hat Enterprise Linux AppStream (v. 8), Red Hat Enterprise Linux CRB (v. 8)"},{"lang":"en","value":"RHSA-2026:2770: Red Hat Enterprise Linux AppStream E4S (v.9.0)"},{"lang":"en","value":"RHSA-2026:2824: Red Hat Enterprise Linux AppStream E4S (v.9.2)"},{"lang":"en","value":"RHSA-2026:2736: Red Hat CodeReady Linux Builder EUS (v.9.4), Red Hat Enterprise Linux AppStream EUS (v.9.4)"},{"lang":"en","value":"RHSA-2026:3037: Red Hat CodeReady Linux Builder EUS (v.9.6), Red Hat Enterprise Linux AppStream EUS (v.9.6)"},{"lang":"en","value":"RHSA-2026:2048: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)"}],"timeline":[{"lang":"en","time":"2026-01-19T18:01:42.972Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-01-19T17:15:55.735Z","value":"Made public."}],"title":"freerdp: FreeRDP: Arbitrary code execution and denial of service via malicious server","x_adpType":"supplier","x_generator":{"engine":"sadp-cli 1.0.0"},"providerMetadata":{"orgId":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","shortName":"redhat-SADP","dateUpdated":"2026-06-30T12:06:41.450Z"}}]}}