CVE-2026-64587
In the Linux kernel, the following vulnerability has been resolved: net: ethernet: arc: emac: quiesce interrupts before requesting IRQ Normal RX/TX interrupts are enabled later, in arc_emac_open(), so probe should not see interrupt delivery in the usual…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.16%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In the Linux kernel, the following vulnerability has been resolved: net: ethernet: arc: emac: quiesce interrupts before requesting IRQ Normal RX/TX interrupts are enabled later, in arc_emac_open(), so probe should not see interrupt delivery in the usual case. However, hardware may still present stale or latched interrupt status left by firmware or the bootloader. If probe later unwinds after devm_request_irq() has installed the handler, such a stale interrupt can still reach arc_emac_intr() during teardown and race with release of the associated net_device. Avoid that window by putting the device into a known quiescent state before requesting the IRQ: disable all EMAC interrupt sources and clear any pending EMAC interrupt status bits. This keeps the change hardware-focused and minimal, while preventing spurious IRQ delivery from leftover state.
- CVSS 3.1
- 7.0 HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.16% probability · 5th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
EPSS 0.2% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://git.kernel.org/stable/c/2503d08f8a2de618e5c3a8183b250ff4a2e2d52c
- https://git.kernel.org/stable/c/5f29dd540fe5ea3c826fc8ec759ba488b31f9707
- https://git.kernel.org/stable/c/6fc7449773748c7b904235a09a67054d78ab1172
- https://git.kernel.org/stable/c/81431da777924dddaefa5c9b0ca9da4a93f9df96
- https://git.kernel.org/stable/c/8efd5dcd31e22a9308b16b107a052fcd568c0a99
- https://git.kernel.org/stable/c/8f9adb3605e36f75639de529bb3d66e94194a388
- https://git.kernel.org/stable/c/abd338da658d7faa8e26cfefc8f83f0066707564
- https://git.kernel.org/stable/c/d0f2386f529807826e7404d40a245ee428f89f62
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.