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CVE-2025-38183 (GCVE-0-2025-38183)

Vulnerability from cvelistv5 – Published: 2025-07-04 13:37 – Updated: 2026-05-11 21:22
VLAI
Title
net: lan743x: fix potential out-of-bounds write in lan743x_ptp_io_event_clock_get()
Summary
In the Linux kernel, the following vulnerability has been resolved: net: lan743x: fix potential out-of-bounds write in lan743x_ptp_io_event_clock_get() Before calling lan743x_ptp_io_event_clock_get(), the 'channel' value is checked against the maximum value of PCI11X1X_PTP_IO_MAX_CHANNELS(8). This seems correct and aligns with the PTP interrupt status register (PTP_INT_STS) specifications. However, lan743x_ptp_io_event_clock_get() writes to ptp->extts[] with only LAN743X_PTP_N_EXTTS(4) elements, using channel as an index: lan743x_ptp_io_event_clock_get(..., u8 channel,...) { ... /* Update Local timestamp */ extts = &ptp->extts[channel]; extts->ts.tv_sec = sec; ... } To avoid an out-of-bounds write and utilize all the supported GPIO inputs, set LAN743X_PTP_N_EXTTS to 8. Detected using the static analysis tool - Svace.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 60942c397af6094c04406b77982314dfe69ef3c4 , < e8d48201a132f4aab31351c19a802c5a5ae820fa (git)
Affected: 60942c397af6094c04406b77982314dfe69ef3c4 , < 66bba1fd5bad548c03f7e42669a59f3f4d8211cc (git)
Affected: 60942c397af6094c04406b77982314dfe69ef3c4 , < 41017bd66c533f7af912c58273c7dfd5de0065d4 (git)
Affected: 60942c397af6094c04406b77982314dfe69ef3c4 , < 4da0d23516857230b8e9b3022e25422ee2e2ba80 (git)
Affected: 60942c397af6094c04406b77982314dfe69ef3c4 , < e353b0854d3a1a31cb061df8d022fbfea53a0f24 (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.18
Unaffected: 0 , < 5.18 (semver)
Unaffected: 6.1.142 , ≤ 6.1.* (semver)
Unaffected: 6.6.95 , ≤ 6.6.* (semver)
Unaffected: 6.12.35 , ≤ 6.12.* (semver)
Unaffected: 6.15.4 , ≤ 6.15.* (semver)
Unaffected: 6.16 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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Antes de llamar a lan743x_ptp_io_event_clock_get(), el valor del canal se compara con el valor m\u00e1ximo de PCI11X1X_PTP_IO_MAX_CHANNELS(8). Esto parece correcto y se ajusta a las especificaciones del registro de estado de interrupci\u00f3n PTP (PTP_INT_STS). Sin embargo, lan743x_ptp_io_event_clock_get() escribe en ptp-\u0026gt;extts[] solo con elementos LAN743X_PTP_N_EXTTS(4), usando el canal como \u00edndice: lan743x_ptp_io_event_clock_get(..., u8 channel,...) { ... /* Actualizar marca de tiempo local */ extts = \u0026amp;ptp-\u0026gt;extts[channel]; extts-\u0026gt;ts.tv_sec = sec; ... } Para evitar una escritura fuera de los l\u00edmites y utilizar todas las entradas GPIO compatibles, configure LAN743X_PTP_N_EXTTS en 8. 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      "current_release_date": "2026-06-30T00:55:38+00:00",
      "cve": "CVE-2025-38183",
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      "source": "Red Hat CSAF VEX",
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      "title": "kernel: net: lan743x: fix potential out-of-bounds write in lan743x_ptp_io_event_clock_get()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-38183.json",
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      "cve": "CVE-2025-38183",
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      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-38183",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-38183.json",
      "version": "30"
    }
  }
}



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