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Review reviewHigh

CVE-2022-48927

Linux Linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: iio: adc: tsc2046: fix memory corruption by preventing array overflow On one side we have indio_dev->num_channels includes all physical channels + timestamp channel. On other side we have an array allocated only for physical channels. So, fix memory corruption by ARRAY_SIZE() instead of num_channels variable. Note the first case is a cleanup rather than a fix as the software timestamp channel bit in active_scanmask is never set by the IIO core.

CVSS
7.8
EPSS
0.22%
12.3% percentile
CISA KEV
Not listed
Published
2024.08.22
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.22%
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: iio: adc: tsc2046: fix memory corruption by preventing array overflow On one side we have indio_dev->num_channels includes all physical channels + timestamp channel. On other side we have an array allocated only for physical channels. So, fix memory corruption by ARRAY_SIZE() instead of num_channels variable. Note the first case is a cleanup rather than a fix as the software timestamp channel bit in active_scanmask is never set by the IIO core.

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= 9374e8f5a38defe90bc65b2decf317c1c62d91dd < 0cb9b2f73c182d242a640e512f4785c7c504512f, >= 9374e8f5a38defe90bc65b2decf317c1c62d91dd < 082d2c047b0d305bb0b6e9f9d671a09470e2db2d, >= 9374e8f5a38defe90bc65b2decf317c1c62d91dd < b7a78a8adaa8849c02f174d707aead0f85dca0da, >= 5.14, >= 5.14 < 5.15.26, >= 5.16 < 5.16.12
Fixed versions
5.15.26, 5.16.12

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-787
CVE-2022-48927 — Linux Linux, linux kernel | SECUFOCUS NOW