{"id":"CVE-2026-93104","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rvt: Return NULL after port allocation failure\n\nrvt_alloc_device() deallocates the IB device when its port array cannot\nbe allocated but then returns the pointer t…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rvt: Return NULL after port allocation failure\n\nrvt_alloc_device() deallocates the IB device when its port array cannot\nbe allocated but then returns the pointer t…","severity":"medium","vendor":"Linux","product":"Linux","affected":["Linux >= ff6acd69518e0a84bd9c9b7f1bd4313f7076db97 < b1e1b25723af44328524c7b54433e4bf0ab9930c","Linux >= ff6acd69518e0a84bd9c9b7f1bd4313f7076db97 < 2982eaf3b9d2d953318c74cd6f1b7576ea6d7b1f","Linux 4.6"],"published":"2026-09-17","updated":"2026-10-15","sourceUpdated":"2026-10-15T11:18:05.270","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-93104","references":[{"url":"https://git.kernel.org/stable/c/2982eaf3b9d2d953318c74cd6f1b7576ea6d7b1f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/80968b42d13080bf7bc1f3ee17fef126ce2ad98f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b1e1b25723af44328524c7b54433e4bf0ab9930c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93104.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-93104"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2536233"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-93104"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93104"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-93104.mbox"},{"url":"https://kernelcve.org/list/?q=CVE-2026-93104"},{"url":"https://git.kernel.org/stable/c/b7129930d1ec46c03a0de07fdce6c29f75795006"},{"url":"https://git.kernel.org/stable/c/5a1a7a5e2fe1a15824fa9ae5edd8f008259471d1"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00174,"epssPercentile":0.06842,"ingestedAt":"2026-09-17T16:21:47.755Z","cvss":4.7,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":["CWE-416"],"slug":"CVE-2026-93104","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rvt: Return NULL after port allocation failure\n\nrvt_alloc_device() deallocates the IB device when its port array cannot\nbe allocated but then returns the pointer to the released allocation.\nCallers treat any non-NULL value as valid and dereference it, resulting\nin a use-after-free.\n\nReturn NULL immediately after deallocation so callers can propagate the\nallocation failure.\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 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, … · updated 2026-10-21 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93104.json)","depth":"sunlit","depthScore":26,"depthScoreParts":{"impact":25.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":227080,"id":"CVE-2026-93104","ts":1792585072408,"field":"cvss","old":null,"new":"4.7"},{"seq":227079,"id":"CVE-2026-93104","ts":1792585072408,"field":"severity","old":"none","new":"medium"}]}