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CVE-2024-40963

mips: bmips: BCM6358: make sure CBR is correctly set

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.4.279, 5.10.221, 5.15.162, 6.1.96, 6.3
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: mips: bmips: BCM6358: make sure CBR is correctly set It was discovered that some device have CBR address set to 0 causing kernel panic when arch_sync_dma_for_cpu_all is called. This was notice in situation where the system is booted from TP1 and BMIPS_GET_CBR() returns 0 instead of a valid address and !!(read_c0_brcm_cmt_local() & (1 << 31)); not failing. The current check whether RAC flush should be disabled or not are not enough hence lets check if CBR is a valid address or not.

Timeline

  1. CVE published
  2. CISA SSVC assessment

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

  3. Record last updated

Affected versions

  • Linux Linux

    From 5.4.240 · fixed in 5.4.279; From 5.10.177 · fixed in 5.10.221; From 5.15.106 · fixed in 5.15.162; From 6.1.23 · fixed in 6.1.96; From 6.2.10 · fixed in 6.3

  • Linux Linux

    6.3

References 7

git.kernel.org