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CVE-2022-48787

iwlwifi: fix use-after-free

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 4.14.268, 4.19.231, 5.4.181, 5.10.102, 5.15.25, and 1 more
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • Linux Linux

    Version range not reported

  • Linux Linux

    From 4.14.263 · fixed in 4.14.268; From 4.19.226 · fixed in 4.19.231; From 5.4.174 · fixed in 5.4.181; From 5.10.94 · fixed in 5.10.102; From 5.15.17 · fixed in 5.15.25; From 5.16.3 · fixed in 5.16.11

References 7

git.kernel.org