net: fec: only stop PTP if it was initialized
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
- —
- Confidentiality · integrity · availability
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- Fix status
- Fixed
No CVSS vector from any source. Fix status from CNA.
Summary
In the Linux kernel, the following vulnerability has been resolved: net: fec: only stop PTP if it was initialized fec_ptp_init() is only called when fep->bufdesc_ex is available. However, fec_probe() unconditionally calls fec_ptp_stop() on the failed_init path, and fec_drv_remove() unconditionally calls fec_ptp_stop() during device removal. Check fep->bufdesc_ex before calling fec_ptp_stop() in both paths to avoid stopping PTP when it was not initialized.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 3.19
- Fix · CNA Linux (Linux) Fixed in 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110, 6.18.52, 7.2.6, 7.3
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 7 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4
- Red Hat OpenShift Container Platform 5
Timeline
- 2026-10-02 Threatist record created from CVE-2026-90056
- 2026-10-03 Alias added: GHSA-gqc9-g66v-x8p5
- 2026-10-13 Affected versions changed · Red Hat
- 2026-10-13 CVSS score added · Red Hat
- 2026-10-19 Fix available: Linux/[email protected] · CNA
- 2026-11-06 Affected versions changed · Red Hat
References
Other 8
- https://git.kernel.org/stable/c/0dc8b3a395c3a749ab62c078f2fd54a402ae7e2b
- https://git.kernel.org/stable/c/1973f108c481fab9bdc7daa6c77442af4a7388ab
- https://git.kernel.org/stable/c/0602a4c238d2b6ed6e2bf5fa8ef7fa0203883dac
- https://git.kernel.org/stable/c/7566789664813c1778f0d4b7e0539fd863ea450c
- https://git.kernel.org/stable/c/383f699a86fd04458dc47d10578c17e94f63d92f
- https://git.kernel.org/stable/c/1f9639caeece703012bdb23975ebedf70f426269
- https://git.kernel.org/stable/c/5975009651c4e5ec1492612962d0dd3dc86f6bda
- https://git.kernel.org/stable/c/dd890ae29299636fb037276fc1b5238698d08b03
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Sources
- CVE-2026-90056 · CVE Program
- CVE-2026-90056 · NVD
- FIRST EPSS
- GHSA-gqc9-g66v-x8p5 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-90056 · Red Hat security data · CC BY 4.0
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