{"apiVersion":"1.0","identifier":"CVE-2026-74737","description":"In the Linux kernel, the following vulnerability has been resolved: net: ethernet: ti: am65-cpsw-nuss: Fix port_id extraction from SRC TAG On the packet reception path, the ID of the MAC Port on which the packet was received, is embedded in the RX DMA Descriptor-s metadata. The ID is extracted using the helper function cppi5_desc_get_tags_ids() which fills in the 16-bit Source Tag into the -port_id- variable. However, it is only the lower 8-bits of the 16-bit Source Tag that represent the MAC Port ID, while the upper 8-bits are Hardware-Reserved and carry an arbitrary value. With the existing logic, sporadic kernel crash is observed due to the subsequent driver code accessing out-of-bound memory because of an invalid port_id. Hence, fix the port_id extraction logic to use only the lower 8-bits of the Source Tag as the MAC Port ID.","publishedAt":"2026-08-26T15:16:52","lastModifiedAt":"2026-08-27T06:17:22","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-74737","cvssScore":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","epssProbability":0.00559,"riskScore":1.03,"affectedProduct":"Linux kernel","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-74737","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-74737","en":"https://www.redsauce.net/en/cves/CVE-2026-74737","fr":"https://www.redsauce.net/fr/cves/CVE-2026-74737","pt":"https://www.redsauce.net/pt/cves/CVE-2026-74737","de":"https://www.redsauce.net/de/cves/CVE-2026-74737","sk":"https://www.redsauce.net/sk/cves/CVE-2026-74737","el":"https://www.redsauce.net/el/cves/CVE-2026-74737"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-74737"}}