CVE-2026-64587
net: ethernet: arc: emac: quiesce interrupts before requesting IRQ
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.
INFO
Published Date :
Aug. 6, 2026, 8:16 a.m.
Last Modified :
Aug. 6, 2026, 8:16 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products
The following products are affected by CVE-2026-64587
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Disable all EMAC interrupt sources.
- Clear pending EMAC interrupt status bits.
- Request the IRQ after disabling interrupts.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-64587.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-64587 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-64587
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-64587 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-64587 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 06, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'e4f2379db6c6823c5d4a4c2c912df00c65de51d7', 'lessThan': 'abd338da658d7faa8e26cfefc8f83f0066707564', 'versionType': 'git'}, {'status': 'affected', 'version': 'e4f2379db6c6823c5d4a4c2c912df00c65de51d7', 'lessThan': '5f29dd540fe5ea3c826fc8ec759ba488b31f9707', 'versionType': 'git'}, {'status': 'affected', 'version': 'e4f2379db6c6823c5d4a4c2c912df00c65de51d7', 'lessThan': '6fc7449773748c7b904235a09a67054d78ab1172', 'versionType': 'git'}, {'status': 'affected', 'version': 'e4f2379db6c6823c5d4a4c2c912df00c65de51d7', 'lessThan': '81431da777924dddaefa5c9b0ca9da4a93f9df96', 'versionType': 'git'}, {'status': 'affected', 'version': 'e4f2379db6c6823c5d4a4c2c912df00c65de51d7', 'lessThan': 'd0f2386f529807826e7404d40a245ee428f89f62', 'versionType': 'git'}, {'status': 'affected', 'version': 'e4f2379db6c6823c5d4a4c2c912df00c65de51d7', 'lessThan': '8efd5dcd31e22a9308b16b107a052fcd568c0a99', 'versionType': 'git'}, {'status': 'affected', 'version': 'e4f2379db6c6823c5d4a4c2c912df00c65de51d7', 'lessThan': '8f9adb3605e36f75639de529bb3d66e94194a388', 'versionType': 'git'}, {'status': 'affected', 'version': 'e4f2379db6c6823c5d4a4c2c912df00c65de51d7', 'lessThan': '2503d08f8a2de618e5c3a8183b250ff4a2e2d52c', 'versionType': 'git'}], 'programFiles': ['drivers/net/ethernet/arc/emac_main.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.11'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.11', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.253', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.203', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.167', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.130', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.78', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.19', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '6.19.9', 'versionType': 'semver', 'lessThanOrEqual': '6.19.*'}, {'status': 'unaffected', 'version': '7.0', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/ethernet/arc/emac_main.c'], 'defaultStatus': 'affected'}] Added 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. Added Reference https://git.kernel.org/stable/c/2503d08f8a2de618e5c3a8183b250ff4a2e2d52c Added Reference https://git.kernel.org/stable/c/5f29dd540fe5ea3c826fc8ec759ba488b31f9707 Added Reference https://git.kernel.org/stable/c/6fc7449773748c7b904235a09a67054d78ab1172 Added Reference https://git.kernel.org/stable/c/81431da777924dddaefa5c9b0ca9da4a93f9df96 Added Reference https://git.kernel.org/stable/c/8efd5dcd31e22a9308b16b107a052fcd568c0a99 Added Reference https://git.kernel.org/stable/c/8f9adb3605e36f75639de529bb3d66e94194a388 Added Reference https://git.kernel.org/stable/c/abd338da658d7faa8e26cfefc8f83f0066707564 Added Reference https://git.kernel.org/stable/c/d0f2386f529807826e7404d40a245ee428f89f62