{"id":"CVE-2026-7764","state":"PUBLISHED","title":"Out-of-bounds read in morse.ko Vendor IE processing","description":"An out-of-bounds read vulnerability in the morse.ko HaLow Wi-Fi kernel driver in Morse Micro HaLowLink 2 software versions prior to 2.11.12 allows an unauthenticated attacker within radio range to disclose a small amount of kernel heap memory or cause a Denial of Service (kernel oops/panic) via a crafted 802.11ah beacon or probe response frame containing a malformed Vendor Information Element. The function morse_vendor_find_vendor_ie() does not validate the IE length against the expected structure size before its result is passed to morse_vendor_rx_caps_ops_ie() and morse_vendor_fill_sta_vendor_info(), which read at fixed offsets into the IE data. Because the length check only requires the IE to be longer than 3 bytes, an attacker can supply an undersized IE, causing a heap out-of-bounds read of up to 9 bytes. No authentication, association, or user interaction is required.","publishedAt":"2026-06-04T00:17:45.373Z","updatedAt":"2026-06-04T13:01:15.389Z","severity":{"score":6.8,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","source":"CISA-ADP"},"assigner":"Bugcrowd","products":["Morse Micro HaLowLink 2"],"affected":[{"vendor":"Morse Micro","product":"HaLowLink 2","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"2.11.12","versionType":"semver"}]}],"references":["https://www.morsemicro.com/security-advisories/MM-SA-2026-003"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:07.220Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/7xxx/CVE-2026-7764.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-7764","state":"PUBLISHED","datePublished":"2026-06-04T00:17:45.373Z","dateUpdated":"2026-06-04T13:01:15.389Z","assignerShortName":"Bugcrowd","assignerOrgId":"4ac701fe-44e9-4bcd-9585-dd6449257611","dateReserved":"2026-05-04T05:03:13.154Z"},"containers":{"cna":{"title":"Out-of-bounds read in morse.ko Vendor IE processing","descriptions":[{"lang":"en","value":"An out-of-bounds read vulnerability in the morse.ko HaLow Wi-Fi kernel driver in Morse Micro HaLowLink 2 software versions prior to 2.11.12 allows an unauthenticated attacker within radio range to disclose a small amount of kernel heap memory or cause a Denial of Service (kernel oops/panic) via a crafted 802.11ah beacon or probe response frame containing a malformed Vendor Information Element. The function morse_vendor_find_vendor_ie() does not validate the IE length against the expected structure size before its result is passed to morse_vendor_rx_caps_ops_ie() and morse_vendor_fill_sta_vendor_info(), which read at fixed offsets into the IE data. Because the length check only requires the IE to be longer than 3 bytes, an attacker can supply an undersized IE, causing a heap out-of-bounds read of up to 9 bytes. No authentication, association, or user interaction is required."}],"affected":[{"vendor":"Morse Micro","product":"HaLowLink 2","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"2.11.12","versionType":"semver"}]}],"references":[{"url":"https://www.morsemicro.com/security-advisories/MM-SA-2026-003"}],"problemTypes":[{"descriptions":[{"lang":"en","description":"CWE-125: Out-of-bounds Read"}]}],"providerMetadata":{"shortName":"Bugcrowd","orgId":"4ac701fe-44e9-4bcd-9585-dd6449257611","dateUpdated":"2026-06-04T00:17:45.373Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:morsemicro:halow_link_2:*:*:*:*:*:*:*:*","versionEndExcluding":"2.11.12"}]}]}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":6.8,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"LOW"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-06-04T13:01:07.316384Z","id":"CVE-2026-7764","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-04T13:01:15.389Z"}}]}}}