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Review reviewHigh

CVE-2021-47083

Linux Linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: pinctrl: mediatek: fix global-out-of-bounds issue When eint virtual eint number is greater than gpio number, it maybe produce 'desc[eint_n]' size globle-out-of-bounds issue.

CVSS
7.1
EPSS
-
- percentile
CISA KEV
Not listed
Published
2024.03.05
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 7.1

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: pinctrl: mediatek: fix global-out-of-bounds issue When eint virtual eint number is greater than gpio number, it maybe produce 'desc[eint_n]' size globle-out-of-bounds issue.

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= fb5fa8dc151b2364c975a9070eedb28a354a995a < f373298e1bf0c6ea097c0bcc558dc43ad53e421f, >= fb5fa8dc151b2364c975a9070eedb28a354a995a < 441d3873664d170982922c5d2fc01fa89d9439ed, >= fb5fa8dc151b2364c975a9070eedb28a354a995a < fb563baa3eb8e7a15f2cff3c2695e2cca0493e69, >= fb5fa8dc151b2364c975a9070eedb28a354a995a < 2d5446da5acecf9c67db1c9d55ae2c3e5de01f8d, >= 4.20, < 5.4.169, >= 5.5 < 5.10.89, >= 5.11 < 5.15.12, 5.16
Fixed versions
5.4.169, 5.10.89, 5.15.12

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:N/A:H
CWE
CWE-125