Out-of-bounds Write Affecting kernel-uek-debug-modules-deprecated package, versions <0:6.12.0-206.104.3.3.el10uek


Severity

Recommended
0.0
high
0
10

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.17% (7th percentile)

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  • Snyk IDSNYK-ORACLE10-KERNELUEKDEBUGMODULESDEPRECATED-19613602
  • published5 Sept 2026
  • disclosed25 Jul 2026

Introduced: 25 Jul 2026

CVE-2026-64270  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Oracle:10 kernel-uek-debug-modules-deprecated to version 0:6.12.0-206.104.3.3.el10uek or higher.
This issue was patched in ELSA-2026-500248.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-uek-debug-modules-deprecated package and not the kernel-uek-debug-modules-deprecated package as distributed by Oracle. See How to fix? for Oracle:10 relevant fixed versions and status.

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

Input: mms114 - reject an oversized device packet size

mms114_interrupt() reads a packet of touch data from the device into a fixed-size on-stack buffer

struct mms114_touch touch[MMS114_MAX_TOUCH];

which holds MMS114_MAX_TOUCH (10) events of MMS114_EVENT_SIZE (8) bytes, i.e. 80 bytes. The length of the I2C read into it is taken verbatim from the device:

packet_size = mms114_read_reg(data, MMS114_PACKET_SIZE);
if (packet_size &lt;= 0)
    goto out;
...
error = __mms114_read_reg(data, MMS114_INFORMATION, packet_size,
        (u8 *)touch);

packet_size is a single device register byte (0x0F) and the only check is the lower bound packet_size <= 0; it is never bounded against the size of touch[]. A malfunctioning, malicious or counterfeit controller (or an attacker tampering with the I2C bus) can report a packet_size of up to 255, so __mms114_read_reg() writes up to 175 bytes past the end of touch[] on the IRQ-thread stack: a stack out-of-bounds write that can overwrite the stack canary, saved registers and the return address.

A well-formed device never reports more than the buffer holds, so reject an oversized packet and drop the report, consistent with the handler's other error paths, rather than reading past the buffer.

CVSS Base Scores

version 3.1