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CVE-2023-52457

serial: 8250: omap: Don't skip resource freeing if pm_runtime_resume_and_get() failed

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.4.268, 5.10.209, 5.15.148, 6.1
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: serial: 8250: omap: Don't skip resource freeing if pm_runtime_resume_and_get() failed Returning an error code from .remove() makes the driver core emit the little helpful error message: remove callback returned a non-zero value. This will be ignored. and then remove the device anyhow. So all resources that were not freed are leaked in this case. Skipping serial8250_unregister_port() has the potential to keep enough of the UART around to trigger a use-after-free. So replace the error return (and with it the little helpful error message) by a more useful error message and continue to cleanup.

Timeline

  1. CVE published
  2. CISA SSVC assessment

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

  3. Record last updated

Affected versions

  • Linux Linux

    From 5.4.225 · fixed in 5.4.268; From 5.10.156 · fixed in 5.10.209; From 5.15.80 · fixed in 5.15.148; From 6.0.10 · fixed in 6.1

  • Linux Linux

    6.1

References 7

git.kernel.org