CVE-2026-64587net: ethernet: arc: emac: quiesce interrupts before requesting IRQ
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- 7.0 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Aug 8, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from e4f2379db6c6823c5d4a4c2c912df00c65de51d7 before abd338da658d7faa8e26cfefc8f83f0066707564; from e4f2379db6c6823c5d4a4c2c912df00c65de51d7 before 5f29dd540fe5ea3c826fc8ec759ba488b31f9707; from e4f2379db6c6823c5d4a4c2c912df00c65de51d7 before 6fc7449773748c7b904235a09a67054d78ab1172; from e4f2379db6c6823c5d4a4c2c912df00c65de51d7 before 81431da777924dddaefa5c9b0ca9da4a93f9df96; from e4f2379db6c6823c5d4a4c2c912df00c65de51d7 before d0f2386f529807826e7404d40a245ee428f89f62; from e4f2379db6c6823c5d4a4c2c912df00c65de51d7 before 8efd5dcd31e22a9308b16b107a052fcd568c0a99; from e4f2379db6c6823c5d4a4c2c912df00c65de51d7 before 8f9adb3605e36f75639de529bb3d66e94194a388; from e4f2379db6c6823c5d4a4c2c912df00c65de51d7 before 2503d08f8a2de618e5c3a8183b250ff4a2e2d52c | CNA record |
References
- https://git.kernel.org/stable/c/abd338da658d7faa8e26cfefc8f83f0066707564
- 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/d0f2386f529807826e7404d40a245ee428f89f62
- https://git.kernel.org/stable/c/8efd5dcd31e22a9308b16b107a052fcd568c0a99
- https://git.kernel.org/stable/c/8f9adb3605e36f75639de529bb3d66e94194a388
- https://git.kernel.org/stable/c/2503d08f8a2de618e5c3a8183b250ff4a2e2d52c
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.