Missing overhead check in Linux kernel sr9700 USB driver
Key facts
- Attack vector
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- Privileges required
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- User interaction
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- Attack complexity
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- Impact type
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- Confidentiality · integrity · availability
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- Fix status
- Partial Red Hat: 4 without a fix
No CVSS vector from any source. Fix status from CNA and Red Hat.
Summary
The Linux kernel sr9700 USB Ethernet driver, from 3.12 before the fixed releases, miscalculates receive packet lengths. The receive fixup checks the payload length against the whole remaining receive buffer instead of the space after the header and CRC, so the copy can run past the end of the buffer. The issue was found by static analysis.
Written with Claude Haiku 5.5 from the sources below · 2026-10-30
Description from the CNA
In the Linux kernel, the following vulnerability has been resolved: net: usb: sr9700: include receive overhead in the length check The receive fixup subtracts the Ethernet CRC from the reported packet length, but compares that payload length against the whole remaining receive buffer. The following copy starts after the three-byte header, and the cursor advance consumes both that header and the four-byte CRC. Require the payload to fit after SR_RX_OVERHEAD before copying it or advancing to the next packet. The loop already ensures that the remaining buffer is larger than the overhead, so the subtraction is safe. The issue was found by our static-analysis tool.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
Fixed Linux kernel versions are 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.112, 6.18.55, 7.2.9 and 7.3. Red Hat lists Red Hat Enterprise Linux 8 and 9 and Red Hat OpenShift Container Platform 4 and 5 as affected, with no fix available.
Written with Claude Haiku 5.5 from the sources below · 2026-10-30
- Fix · CNA Linux (Linux) Fixed in 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.112, 6.18.55, 7.2.9, 7.3
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 4 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 5 | Affected | No fix yet: Fix deferred |
Not affected: 3 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
Timeline
- 2026-10-18 Threatist record created from CVE-2026-98597
- 2026-10-18 Alias added: GHSA-rp3f-5pmv-m85m
- 2026-10-19 Fix available: Linux/[email protected] · CNA
- 2026-10-20 Affected versions changed · Red Hat
- 2026-10-20 CVSS score added · Red Hat
- 2026-10-30 Affected versions changed · Red Hat
References
Other 8
- https://git.kernel.org/stable/c/92d88c88390fc62444c00a1a22078f838e03891f
- https://git.kernel.org/stable/c/baf07d5153d3af8f98e65e2d3566bc0d50c4e3ac
- https://git.kernel.org/stable/c/8488779d9bddbdb33588c9fc2c0657a3da773f61
- https://git.kernel.org/stable/c/e1f5b74edccf4c9b671b6bce4435a98746fe5167
- https://git.kernel.org/stable/c/9b59b00890c5dea355b4cc8795ab8eeafc044e48
- https://git.kernel.org/stable/c/6ab6c9d120b30c94579192ef83a581a3dda6d79c
- https://git.kernel.org/stable/c/05b442709bd5256c6c0e11fe56b9a0cb2455c245
- https://git.kernel.org/stable/c/c06bde80ae7a7b595732f7cabcb92cf08db9d56a
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- TI-2021-02452 Incorrect authorization in Ubuntu linux kernel KEVCVSS 3.1HIGH 8.8
- TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
Sources
- CVE-2026-98597 · CVE Program
- CVE-2026-98597 · NVD
- FIRST EPSS
- GHSA-rp3f-5pmv-m85m · GitHub Advisory Database · CC BY 4.0
- CVE-2026-98597 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences