5.5

CVE-2026-64236

i2c: davinci: fix division by zero on missing clock-frequency

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

i2c: davinci: fix division by zero on missing clock-frequency

When the 'clock-frequency' property is missing from the device tree,
the driver falls back to DAVINCI_I2C_DEFAULT_BUS_FREQ. However, this
macro was defined in kHz (100), whereas the device tree property is
expected in Hz.

The probe function divided the fallback value by 1000, causing
integer truncation that resulted in dev->bus_freq = 0. This triggered
a deterministic division-by-zero kernel panic when calculating clock
dividers later in the probe sequence.

Fix this by redefining DAVINCI_I2C_DEFAULT_BUS_FREQ in Hz (100000)
to match the expected device tree property unit, allowing the existing
division logic to work correctly for both cases.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 6.14 < 6.18.35
Linux ≫ Linux Kernel Version >= 6.19 < 7.0.12
Linux ≫ Linux Kernel Version7.1 Updaterc1
Linux ≫ Linux Kernel Version7.1 Updaterc2
Linux ≫ Linux Kernel Version7.1 Updaterc3
Linux ≫ Linux Kernel Version7.1 Updaterc4
Linux ≫ Linux Kernel Version7.1 Updaterc5
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.11% 0.016
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-369 Divide By Zero

The product divides a value by zero.

https://git.kernel.org/stable/c/3f43865cb64dd7cb50efae1281a95585617b12a1
Patch
https://git.kernel.org/stable/c/9b694bc0e1831cbc5c3bbfd1b156ec719128f7d9
Patch
https://git.kernel.org/stable/c/030675aa54cf757769b3db65642433d626b3ed7c
Patch