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Review reviewHigh

CVE-2022-49289

Linux Linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: uaccess: fix integer overflow on access_ok() Three architectures check the end of a user access against the address limit without taking a possible overflow into account. Passing a negative length or another overflow in here returns success when it should not. Use the most common correct implementation here, which optimizes for a constant 'size' argument, and turns the common case into a single comparison.

CVSS
7.1
EPSS
-
- percentile
CISA KEV
Not listed
Published
2025.02.26
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: uaccess: fix integer overflow on access_ok() Three architectures check the end of a user access against the address limit without taking a possible overflow into account. Passing a negative length or another overflow in here returns success when it should not. Use the most common correct implementation here, which optimizes for a constant 'size' argument, and turns the common case into a single comparison.

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= 7567746e1c0d66ac0ef8a9d8816ca694462c7370 < e65d28d4e9bf90a35ba79c06661a572a38391dec, >= 7567746e1c0d66ac0ef8a9d8816ca694462c7370 < 99801e2f457824955da4aadaa035913a6dede03a, >= 7567746e1c0d66ac0ef8a9d8816ca694462c7370 < a1ad747fc1a0e06d1bf26b996ee8a56b5c8d02d8, >= 7567746e1c0d66ac0ef8a9d8816ca694462c7370 < 222ca305c9fd39e5ed8104da25c09b2b79a516a8, >= 3.2, >= 3.2 < 5.15.32, >= 5.16 < 5.16.18, 5.17
Fixed versions
5.15.32, 5.16.18

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-190