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CVE-2026-64587— net: ethernet: arc: emac: quiesce interrupts before requesting IRQ

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会开源的一款操作系统内核。 Linux kernel 3.11版本存在安全漏洞，该漏洞源于在请求IRQ前未使中断静默，硬件可能遗留陈旧中断状态，导致虚假中断与关联net_device的释放产生竞争，可能造成释放后重用。

CVSS 7.0 · High EPSS 0.16% · P4

Possible ATT&CK Techniques 1 AI

T1055 · Process Injection

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux e4f2379db6c6823c5d4a4c2c912df00c65de51d7< abd338da658d7faa8e26cfefc8f83f0066707564 affected
e4f2379db6c6823c5d4a4c2c912df00c65de51d7< 5f29dd540fe5ea3c826fc8ec759ba488b31f9707 affected
e4f2379db6c6823c5d4a4c2c912df00c65de51d7< 6fc7449773748c7b904235a09a67054d78ab1172 affected
e4f2379db6c6823c5d4a4c2c912df00c65de51d7< 81431da777924dddaefa5c9b0ca9da4a93f9df96 affected
e4f2379db6c6823c5d4a4c2c912df00c65de51d7< d0f2386f529807826e7404d40a245ee428f89f62 affected
e4f2379db6c6823c5d4a4c2c912df00c65de51d7< 8efd5dcd31e22a9308b16b107a052fcd568c0a99 affected
e4f2379db6c6823c5d4a4c2c912df00c65de51d7< 8f9adb3605e36f75639de529bb3d66e94194a388 affected
e4f2379db6c6823c5d4a4c2c912df00c65de51d7< 2503d08f8a2de618e5c3a8183b250ff4a2e2d52c affected
… +10 more rows
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I. Basic Information for CVE-2026-64587

Vulnerability Information
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Vulnerability Title
net: ethernet: arc: emac: quiesce interrupts before requesting IRQ
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会开源的一款操作系统内核。 Linux kernel 3.11版本存在安全漏洞，该漏洞源于在请求IRQ前未使中断静默，硬件可能遗留陈旧中断状态，导致虚假中断与关联net_device的释放产生竞争，可能造成释放后重用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux e4f2379db6c6823c5d4a4c2c912df00c65de51d7 ~ abd338da658d7faa8e26cfefc8f83f0066707564 -
Linux Linux 3.11 -

II. Public POCs for CVE-2026-64587

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III. Intelligence Information for CVE-2026-64587

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Patches & Fixes for CVE-2026-64587 (8)

Same Patch Batch · Linux · 2026-08-06 · 22 CVEs total

CVE-2026-64597 9.8 CRITICAL smb: client: fix double-free in SMB2_close() replay
CVE-2026-64598 8.8 HIGH smb/client: Fix error code in smb2_aead_req_alloc()
CVE-2026-64586 8.8 HIGH wifi: brcmfmac: drain bus_reset work on device removal
CVE-2026-64583 7.8 HIGH usb: gadget: udc: bdc: free IRQ and drain func_wake_notify before teardown
CVE-2026-64584 7.8 HIGH usb: gadget: f_midi: cancel pending IN work before freeing the midi object
CVE-2026-64585 7.8 HIGH can: esd_usb: kill anchored URBs before freeing netdevs
CVE-2026-64601 7.8 HIGH ALSA: us144mkii: capture_urb_complete: redundant usb_anchor_urb corrupts anchor list on ea
CVE-2026-64599 7.8 HIGH crypto: amlogic - avoid double cleanup in meson_crypto_probe()
CVE-2026-64588 7.8 HIGH fuse-uring: fix data races on ring->ready
CVE-2026-64594 usb: gadget: f_fs: initialize reset_work at allocation time
CVE-2026-64589 i2c: core: fix NULL-deref on adapter registration failure
CVE-2026-64591 iommu/vt-d: Avoid WARNING in sva unbind path
CVE-2026-64590 dma-buf/udmabuf: skip redundant cpu sync to fix cacheline EEXIST warning
CVE-2026-64592 riscv: mm: Unconditionally sfence.vma for spurious fault
CVE-2026-64593 btrfs: do not trim a device which is not writeable
CVE-2026-68480 x86/bugs: Make Safe-RET robust against interrupt injection
CVE-2026-64595 HID: hid-lenovo-go: cancel cfg_setup work in hid_go_cfg_remove()
CVE-2026-64596 libfs: set SB_I_NOEXEC and SB_I_NODEV by default in init_pseudo()
CVE-2026-64603 platform/x86: intel-hid: Protect ACPI notify handler against recursion
CVE-2026-64602 iio: adc: spear: Initialize completion before requesting IRQ

Showing top 20 of 22 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-64587

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