CVE-2023-53834
In the Linux kernel, the following vulnerability has been resolved: iio: adc: ina2xx: avoid NULL pointer dereference on OF device match The affected lines were resulting in a NULL pointer dereference on our platform because the device tree contained the following list of compatible strings: power-sensor@40 { compatible = "ti,ina232", "ti,ina231"; ... }; Since the driver doesn't declare a compatible string "ti,ina232", the OF matching succeeds on "ti,ina231". But the I2C device ID info is populated via the first compatible string, cf. modalias population in of_i2c_get_board_info(). Since there is no "ina232" entry in the legacy I2C device ID table either, the struct i2c_device_id *id pointer in the probe function is NULL. Fix this by using the already populated type variable instead, which points to the proper driver data. Since the name is also wanted, add a generic one to the ina2xx_config table.
Affected versions
Linux kernel versions
4.5
and later are affected. Fixed in
5.15.127,
6.1.46,
6.4.11,
6.5
and their respective stable series.
References
The following references provide additional information about CVE-2023-53834 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/13f3ce53b65aa8b44cad7039d31e62c9ffd6c5d1
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PatchKernel patch commithttps://git.kernel.org/stable/c/77b689cc27d489b75d33f1a368356d70eb0ce08c
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PatchKernel patch commithttps://git.kernel.org/stable/c/a41e19cc0d6b6a445a4133170b90271e4a2553dc
Frequently asked questions
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What is CVE-2023-53834?
CVE-2023-53834 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 4.5 onward and has been patched in 5.15.127, 6.1.46, 6.4.11 and others. CVE-2023-53834 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2023-53834?
Yes — CVE-2023-53834 has been patched. Fixed versions include 5.15.127, 6.1.46, 6.4.11 and others. If you are running Linux kernel 4.5 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2023-53834 actively exploited?
No — CVE-2023-53834 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.