CVE-2024-50058

Summary

In the Linux kernel, the following vulnerability has been resolved:

serial: protect uart_port_dtr_rts() in uart_shutdown() too

Commit af224ca2df29 (serial: core: Prevent unsafe uart port access, part 3) added few uport == NULL checks. It added one to uart_shutdown(), so the commit assumes, uport can be NULL in there. But right after that protection, there is an unprotected "uart_port_dtr_rts(uport, false);" call. That is invoked only if HUPCL is set, so I assume that is the reason why we do not see lots of these reports.

Or it cannot be NULL at this point at all for some reason :P.

Until the above is investigated, stay on the safe side and move this dereference to the if too.

I got this inconsistency from Coverity under CID 1585130. Thanks.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxaf224ca2df297440448b9d407d21b50982c6d532 < 2fe399bb8efd0d325ab1138cf8e3ecf23a39e96daffected
LinuxLinuxaf224ca2df297440448b9d407d21b50982c6d532 < 399927f0f875b93f3d5a0336d382ba48b8671eb2affected
LinuxLinuxaf224ca2df297440448b9d407d21b50982c6d532 < d7b5876a6e74cdf8468a478be6b23f2f5464ac7aaffected
LinuxLinuxaf224ca2df297440448b9d407d21b50982c6d532 < e418d91195d29d5f9c9685ff309b92b04b41dc40affected
LinuxLinuxaf224ca2df297440448b9d407d21b50982c6d532 < 76ed24a34223bb2c6b6162e1d8389ec4e602a290affected
LinuxLinuxaf224ca2df297440448b9d407d21b50982c6d532 < 602babaa84d627923713acaf5f7e9a4369e77473affected
LinuxLinux4.7affected
LinuxLinux0 < 4.7unaffected
LinuxLinux5.10.229 <= 5.10.*unaffected
LinuxLinux5.15.170 <= 5.15.*unaffected
LinuxLinux6.1.115 <= 6.1.*unaffected
LinuxLinux6.6.57 <= 6.6.*unaffected
LinuxLinux6.11.4 <= 6.11.*unaffected
LinuxLinux6.12 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

CVE Program Container

Additional References

Additional References

References