CVE-2026-93190 Affecting kernel-uek-core package, versions <0:6.12.0-207.111.5.1.el9uek


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.17% (6th percentile)

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  • Snyk IDSNYK-ORACLE9-KERNELUEKCORE-20593944
  • published8 Oct 2026
  • disclosed17 Sept 2026

Introduced: 17 Sep 2026

CVE-2026-93190  (opens in a new tab)

How to fix?

Upgrade Oracle:9 kernel-uek-core to version 0:6.12.0-207.111.5.1.el9uek or higher.
This issue was patched in ELSA-2026-500374.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-uek-core package and not the kernel-uek-core package as distributed by Oracle. See How to fix? for Oracle:9 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

platform/chrome: cros_ec_typec: Reject out-of-bounds PD cap count

cros_typec_register_partner_pdos() copies the partner PDOs from the EC TYPEC_STATUS response into the fixed caps_desc.pdo[PDO_MAX_OBJECTS] array.

memcpy(caps_desc.pdo, resp-&gt;source_cap_pdos,
       sizeof(u32) * resp-&gt;source_cap_count);
...
memcpy(caps_desc.pdo, resp-&gt;sink_cap_pdos,
       sizeof(u32) * resp-&gt;sink_cap_count);

PDO_MAX_OBJECTS is 7. source_cap_count and sink_cap_count are u8 fields from the EC. The only check is that they are not both zero. If either is larger than 7, the memcpy writes past the end of the array on the stack. A count of 255 overflows it by about 1 KB. The EC source arrays are only seven entries wide. A larger count reads past them too.

The ChromeOS EC firmware caps these counts today, so a compliant setup does not hit this. The kernel should still validate these values rather than trust them.

Validate the counts in cros_typec_register_partner_pdos() next to the memcpy. Skip the PDO registration if either count is above PDO_MAX_OBJECTS. The rest of cros_typec_handle_status() still runs so events are handled and cleared.

CVSS Base Scores

version 3.1