CVE-2024-38634

Summary

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

serial: max3100: Lock port->lock when calling uart_handle_cts_change()

uart_handle_cts_change() has to be called with port lock taken, Since we run it in a separate work, the lock may not be taken at the time of running. Make sure that it's taken by explicitly doing that. Without it we got a splat:

WARNING: CPU: 0 PID: 10 at drivers/tty/serial/serial_core.c:3491 uart_handle_cts_change+0xa6/0xb0 … Workqueue: max3100-0 max3100_work [max3100] RIP: 0010:uart_handle_cts_change+0xa6/0xb0 … max3100_handlerx+0xc5/0x110 [max3100] max3100_work+0x12a/0x340 [max3100]

Affected Software

VendorProductVersion RangeStatus
LinuxLinux7831d56b0a3544cbb6f82f76c34ca95e24d5b676 < 44b38924135d2093e2ec1812969464845dd66dc9affected
LinuxLinux7831d56b0a3544cbb6f82f76c34ca95e24d5b676 < ea9b35372b58ac2931bfc1d5bc25e839d1221e30affected
LinuxLinux7831d56b0a3544cbb6f82f76c34ca95e24d5b676 < cc121e3722a0a2c8f716ef991e5425b180a5fb94affected
LinuxLinux7831d56b0a3544cbb6f82f76c34ca95e24d5b676 < 78dbda51bb4241b88a52d71620f06231a341f9baaffected
LinuxLinux7831d56b0a3544cbb6f82f76c34ca95e24d5b676 < 8296bb9e5925b6634259c5d4daee88f0cc0884ecaffected
LinuxLinux7831d56b0a3544cbb6f82f76c34ca95e24d5b676 < 93df2fba6c7dfa9a2f08546ea9a5ca4728758458affected
LinuxLinux7831d56b0a3544cbb6f82f76c34ca95e24d5b676 < 865b30c8661924ee9145f442bf32cea549faa869affected
LinuxLinux7831d56b0a3544cbb6f82f76c34ca95e24d5b676 < 77ab53371a2066fdf9b895246505f5ef5a4b5d47affected
LinuxLinux2.6.30affected
LinuxLinux0 < 2.6.30unaffected
LinuxLinux4.19.316 <= 4.19.*unaffected
LinuxLinux5.4.278 <= 5.4.*unaffected
LinuxLinux5.10.219 <= 5.10.*unaffected
LinuxLinux5.15.161 <= 5.15.*unaffected
LinuxLinux6.1.93 <= 6.1.*unaffected
LinuxLinux6.6.33 <= 6.6.*unaffected
LinuxLinux6.9.4 <= 6.9.*unaffected
LinuxLinux6.10 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

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

CVE Program Container

Additional References

References