{"id":"CVE-2026-98495","title":"net: arp: terminate device name before lookup","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: arp: terminate device name before lookup\n\nThe ARP ioctl copies a user-provided struct arpreq into a stack object. Its\narp_dev field may contain IFNAMSIZ bytes with…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc < ae6d704dbf9542b0a0830ec91a2db4f30307e7d8","Linux >= 36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc < 47107491b48ceef0a2faa7a010cfa961f211ef9f","Linux >= 36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc < 7389757d88f54237951d7497d9c4dae7cc6d64be","Linux >= 36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc < 1b08c5c3ac27c9ff91c5309f4a32b4e91ce2263b","Linux >= 36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc < 414bbad9928598904313299ac9e037a73f520be1","Linux >= 36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc < ba664d83638640cf454b65167339cbf20dfd6f10","Linux >= 36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc < 35e716a70733472ede300540082d64c33bf3b4c9","Linux >= 36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc < d8b6529e80bcb4fb8177121404cbb3377acaebd2","Linux 5.5"],"published":"2026-10-18","updated":"2026-10-18","sourceUpdated":"2026-10-18T15:16:24.810Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98495","references":[{"url":"https://git.kernel.org/stable/c/ae6d704dbf9542b0a0830ec91a2db4f30307e7d8"},{"url":"https://git.kernel.org/stable/c/47107491b48ceef0a2faa7a010cfa961f211ef9f"},{"url":"https://git.kernel.org/stable/c/7389757d88f54237951d7497d9c4dae7cc6d64be"},{"url":"https://git.kernel.org/stable/c/1b08c5c3ac27c9ff91c5309f4a32b4e91ce2263b"},{"url":"https://git.kernel.org/stable/c/414bbad9928598904313299ac9e037a73f520be1"},{"url":"https://git.kernel.org/stable/c/ba664d83638640cf454b65167339cbf20dfd6f10"},{"url":"https://git.kernel.org/stable/c/35e716a70733472ede300540082d64c33bf3b4c9"},{"url":"https://git.kernel.org/stable/c/d8b6529e80bcb4fb8177121404cbb3377acaebd2"}],"tags":["cve.org"],"ingestedAt":"2026-10-18T15:45:12.290Z","slug":"CVE-2026-98495","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nnet: arp: terminate device name before lookup\n\nThe ARP ioctl copies a user-provided struct arpreq into a stack object. Its\narp_dev field may contain IFNAMSIZ bytes without a NUL terminator.\n\nSuch input is passed to dev_get_by_name_rcu() or __dev_get_by_name(), where\nstrcmp() can read past the end of the stack object when a matching\nalternative interface name exists.\n\nTerminate the field before the lookup to prevent the out-of-bounds read.\n\n## Affected\n\n- `Linux >= 36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc < ae6d704dbf9542b0a0830ec91a2db4f30307e7d8`\n- `Linux >= 36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc < 47107491b48ceef0a2faa7a010cfa961f211ef9f`\n- `Linux >= 36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc < 7389757d88f54237951d7497d9c4dae7cc6d64be`\n- `Linux >= 36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc < 1b08c5c3ac27c9ff91c5309f4a32b4e91ce2263b`\n- `Linux >= 36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc < 414bbad9928598904313299ac9e037a73f520be1`\n- `Linux >= 36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc < ba664d83638640cf454b65167339cbf20dfd6f10`\n- `Linux >= 36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc < 35e716a70733472ede300540082d64c33bf3b4c9`\n- `Linux >= 36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc < d8b6529e80bcb4fb8177121404cbb3377acaebd2`\n- `Linux 5.5`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}