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Review reviewHigh

CVE-2022-48787

Linux Linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: iwlwifi: fix use-after-free If no firmware was present at all (or, presumably, all of the firmware files failed to parse), we end up unbinding by calling device_release_driver(), which calls remove(), which then in iwlwifi calls iwl_drv_stop(), freeing the 'drv' struct. However the new code I added will still erroneously access it after it was freed. Set 'failure=false' in this case to avoid the access, all data was already freed anyway.

CVSS
7.8
EPSS
0.24%
15.4% percentile
CISA KEV
Not listed
Published
2024.07.16
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.24%
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: iwlwifi: fix use-after-free If no firmware was present at all (or, presumably, all of the firmware files failed to parse), we end up unbinding by calling device_release_driver(), which calls remove(), which then in iwlwifi calls iwl_drv_stop(), freeing the 'drv' struct. However the new code I added will still erroneously access it after it was freed. Set 'failure=false' in this case to avoid the access, all data was already freed anyway.

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= 8e10749fa1a454c1e7214f36cec83241f5a36ef1 < d3b98fe36f8a06ce654049540773256ab59cb53d, >= 1d7cc54137a4f28506dc7beac235b240b08f4e59 < 7d6475179b85a83186ccce59cdc359d4f07d0bcb, >= 0446cafa843e6db4982731c167e11c80d42be7e2 < 494de920d98f125b099f27a2d274850750aff957, >= febab6b60d61d13cd9f30a2991deea56df39567d < 008508c16af0087cda0394e1ac6f0493b01b6063, >= e23f075d77987de4215c8e0696f28bcc707506f7 < ddd46059f7d99119b62d44c519df7a79f2e6a515, >= 6b5ad4bd0d78fef6bbe0ecdf96e09237c9c52cc1 < 9958b9cbb22145295ee1ffaea0904c383da2c05d, >= ab07506b0454bea606095951e19e72c282bfbb42 < bea2662e7818e15d7607d17d57912ac984275d94, >= 4.14.263 < 4.14.268, >= 4.19.226 < 4.19.231, >= 5.4.174 < 5.4.181, >= 5.10.94 < 5.10.102, >= 5.15.17 < 5.15.25, >= 5.16.3 < 5.16.11
Fixed versions
4.14.268, 4.19.231, 5.4.181, 5.10.102, 5.15.25, 5.16.11

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-416