{"id":"CVE-2026-64587","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ethernet: arc: emac: quiesce interrupts before requesting IRQ\n\nNormal RX/TX interrupts are enabled later, in arc_emac_open(), so probe\nshould not see interrupt del…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ethernet: arc: emac: quiesce interrupts before requesting IRQ\n\nNormal RX/TX interrupts are enabled later, in arc_emac_open(), so probe\nshould not see interrupt del…","severity":"high","cvss":7,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","published":"2026-08-06","updated":"2026-08-08","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-64587","references":[{"url":"https://git.kernel.org/stable/c/2503d08f8a2de618e5c3a8183b250ff4a2e2d52c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/5f29dd540fe5ea3c826fc8ec759ba488b31f9707","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6fc7449773748c7b904235a09a67054d78ab1172","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/81431da777924dddaefa5c9b0ca9da4a93f9df96","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8efd5dcd31e22a9308b16b107a052fcd568c0a99","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8f9adb3605e36f75639de529bb3d66e94194a388","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/abd338da658d7faa8e26cfefc8f83f0066707564","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d0f2386f529807826e7404d40a245ee428f89f62","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd"],"epss":0.00122,"epssPercentile":0.02251,"ingestedAt":"2026-08-08T21:30:13.222Z","slug":"CVE-2026-64587","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nnet: ethernet: arc: emac: quiesce interrupts before requesting IRQ\n\nNormal RX/TX interrupts are enabled later, in arc_emac_open(), so probe\nshould not see interrupt delivery in the usual case. However, hardware may\nstill present stale or latched interrupt status left by firmware or the\nbootloader.\n\nIf probe later unwinds after devm_request_irq() has installed the handler,\nsuch a stale interrupt can still reach arc_emac_intr() during teardown and\nrace with release of the associated net_device.\n\nAvoid that window by putting the device into a known quiescent state before\nrequesting the IRQ: disable all EMAC interrupt sources and clear any\npending EMAC interrupt status bits. This keeps the change hardware-focused\nand minimal, while preventing spurious IRQ delivery from leftover state.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":38.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}