net: ethernet: arc: emac: quiesce interrupts before requesting IRQ
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.
- Published
- Aug 6, 2026
- Updated
- Aug 8, 2026
- EPSS
- 0.2% · 4th percentile
- CWE
- —
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Report tools
Action score
28
Monitor
Low priority for now.
- CVSS
- 28 / 40 · 7.0 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.2%
CNA vs NVD score
- NVD
- —
- CNA · Linux
- 7.0
- NVD has not scored this yet; the score shown is the CNA’s.
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
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Versions reported by the vendor
Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.
Linux Linux
- 3.11affected
- e4f2379db6c6823c5d4a4c2c912df00c65de51d7 and later · before abd338da658d7faa8e26cfefc8f83f0066707564affected · git
- e4f2379db6c6823c5d4a4c2c912df00c65de51d7 and later · before 5f29dd540fe5ea3c826fc8ec759ba488b31f9707affected · git
- e4f2379db6c6823c5d4a4c2c912df00c65de51d7 and later · before 6fc7449773748c7b904235a09a67054d78ab1172affected · git
- e4f2379db6c6823c5d4a4c2c912df00c65de51d7 and later · before 81431da777924dddaefa5c9b0ca9da4a93f9df96affected · git
- e4f2379db6c6823c5d4a4c2c912df00c65de51d7 and later · before d0f2386f529807826e7404d40a245ee428f89f62affected · git
- e4f2379db6c6823c5d4a4c2c912df00c65de51d7 and later · before 8efd5dcd31e22a9308b16b107a052fcd568c0a99affected · git
- e4f2379db6c6823c5d4a4c2c912df00c65de51d7 and later · before 8f9adb3605e36f75639de529bb3d66e94194a388affected · git
- e4f2379db6c6823c5d4a4c2c912df00c65de51d7 and later · before 2503d08f8a2de618e5c3a8183b250ff4a2e2d52caffected · git
- before 3.11not affected · semver
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | linux | before 6.1.170-1 | 6.1.170-1 |
| Debian:13 | linux | before 6.12.85-1 | 6.12.85-1 |
| Debian:14 | linux | before 6.19.10-1 | 6.19.10-1 |
Same product
linux: all recordsOther highest-scoring records for the same primary product.
- CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation40Plan
- CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment40Plan
- CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()40Plan
- CVE-2026-74309vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler40Plan
- CVE-2026-74280crypto: marvell/octeontx - fix DMA cleanup using wrong loop index40Plan
- CVE-2026-74279crypto: cavium/cpt - fix DMA cleanup using wrong loop index40Plan
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| Linux Linux | 2503d08f8a2de618e5c3a8183b250ff4a2e2d52c | Vendor (CNA) |
| Linux Linux | 5f29dd540fe5ea3c826fc8ec759ba488b31f9707 | Vendor (CNA) |
| Linux Linux | 6fc7449773748c7b904235a09a67054d78ab1172 | Vendor (CNA) |
| Linux Linux | 81431da777924dddaefa5c9b0ca9da4a93f9df96 | Vendor (CNA) |
| Linux Linux | 8efd5dcd31e22a9308b16b107a052fcd568c0a99 | Vendor (CNA) |
| Linux Linux | 8f9adb3605e36f75639de529bb3d66e94194a388 | Vendor (CNA) |
| Linux Linux | abd338da658d7faa8e26cfefc8f83f0066707564 | Vendor (CNA) |
| Linux Linux | d0f2386f529807826e7404d40a245ee428f89f62 | Vendor (CNA) |
| debian:linux | 6.1.170-1 · Debian:12 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- A low-privileged account is enough.
- No user action is required.
- Special conditions such as timing or configuration are required.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- High
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
—
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
nvd-secondary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- git.kernel.org/stable/c/2503d08f8a2de618e5c3a8183b250ff4a2e2d52c
- git.kernel.org/stable/c/5f29dd540fe5ea3c826fc8ec759ba488b31f9707
- git.kernel.org/stable/c/6fc7449773748c7b904235a09a67054d78ab1172
- git.kernel.org/stable/c/81431da777924dddaefa5c9b0ca9da4a93f9df96
- git.kernel.org/stable/c/8efd5dcd31e22a9308b16b107a052fcd568c0a99
- git.kernel.org/stable/c/8f9adb3605e36f75639de529bb3d66e94194a388
- git.kernel.org/stable/c/abd338da658d7faa8e26cfefc8f83f0066707564
- git.kernel.org/stable/c/d0f2386f529807826e7404d40a245ee428f89f62
Vendor advisories and official records. Exploit/PoC links are deliberately left out.