{"id":"CVE-2026-93246","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-af: fix out-of-bounds read setting MSI-X irq affinity\n\nrvu_register_interrupts() walks every MSI-X vector and uses strstr()\nto match \"Mbox\" or \"FLR\" in irq_na…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-af: fix out-of-bounds read setting MSI-X irq affinity\n\nrvu_register_interrupts() walks every MSI-X vector and uses strstr()\nto match \"Mbox\" or \"FLR\" in irq_na…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 4e527f1e5c155ce28164ba34cad47b635d16f827 < 2f460aa0211e97c011ef0cfe5016f8f2a2ed059b","Linux >= 4e527f1e5c155ce28164ba34cad47b635d16f827 < 4d5df98369c5f45710b786499f8bd7ffc3196433","Linux 7.1"],"published":"2026-09-24","updated":"2026-09-24","sourceUpdated":"2026-09-24T16:17:20.647","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-93246","references":[{"url":"https://git.kernel.org/stable/c/2f460aa0211e97c011ef0cfe5016f8f2a2ed059b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/4d5df98369c5f45710b786499f8bd7ffc3196433","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-24T16:47:15.830Z","slug":"CVE-2026-93246","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-af: fix out-of-bounds read setting MSI-X irq affinity\n\nrvu_register_interrupts() walks every MSI-X vector and uses strstr()\nto match \"Mbox\" or \"FLR\" in irq_name before pinning those interrupts\nto CPU 0. irq_name is a per-vector NAME_SIZE buffer, but not every\nslot is populated before this loop runs. strstr() keeps scanning until\nit finds a NUL terminator, so an uninitialized slot can trigger a KASAN\nslab-out-of-bounds read at boot when debug options are enabled.\n\nUse strnstr() with NAME_SIZE to bound the search within each vector's\nname buffer.\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":[]}