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CVE-2023-52567

serial: 8250_port: Check IRQ data before use

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 4.14.327, 4.19.296, 5.4.258, 5.10.198, 5.15.134, and 3 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: serial: 8250_port: Check IRQ data before use In case the leaf driver wants to use IRQ polling (irq = 0) and IIR register shows that an interrupt happened in the 8250 hardware the IRQ data can be NULL. In such a case we need to skip the wake event as we came to this path from the timer interrupt and quite likely system is already awake. Without this fix we have got an Oops: serial8250: ttyS0 at I/O 0x3f8 (irq = 0, base_baud = 115200) is a 16550A ... BUG: kernel NULL pointer dereference, address: 0000000000000010 RIP: 0010:serial8250_handle_irq+0x7c/0x240 Call Trace: ? serial8250_handle_irq+0x7c/0x240 ? __pfx_serial8250_timeout+0x10/0x10

Timeline

  1. CVE published
  2. CISA SSVC assessment

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

  3. Record last updated

Affected versions

  • Linux Linux

    From 4.14.315 · fixed in 4.14.327; From 4.19.283 · fixed in 4.19.296; From 5.4.243 · fixed in 5.4.258; From 5.10.180 · fixed in 5.10.198; From 5.15.111 · fixed in 5.15.134; From 6.1.28 · fixed in 6.1.56; From 6.2.15 · fixed in 6.3; From 6.3.2 · fixed in 6.4

  • Linux Linux

    6.4

References 8

git.kernel.org