CVE-2024-46859

Summary

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

platform/x86: panasonic-laptop: Fix SINF array out of bounds accesses

The panasonic laptop code in various places uses the SINF array with index values of 0 - SINF_CUR_BRIGHT(0x0d) without checking that the SINF array is big enough.

Not all panasonic laptops have this many SINF array entries, for example the Toughbook CF-18 model only has 10 SINF array entries. So it only supports the AC+DC brightness entries and mute.

Check that the SINF array has a minimum size which covers all AC+DC brightness entries and refuse to load if the SINF array is smaller.

For higher SINF indexes hide the sysfs attributes when the SINF array does not contain an entry for that attribute, avoiding show()/store() accessing the array out of bounds and add bounds checking to the probe() and resume() code accessing these.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxe424fb8cc4e6634c10f8159b1ff5618cf7bab9c6 < b7c2f692307fe704be87ea80d7328782b33c3cefaffected
LinuxLinuxe424fb8cc4e6634c10f8159b1ff5618cf7bab9c6 < 9291fadbd2720a869b1d2fcf82305648e2e62a16affected
LinuxLinuxe424fb8cc4e6634c10f8159b1ff5618cf7bab9c6 < 6821a82616f60aa72c5909b3e252ad97fb9f7e2aaffected
LinuxLinuxe424fb8cc4e6634c10f8159b1ff5618cf7bab9c6 < b38c19783286a71693c2194ed1b36665168c09c4affected
LinuxLinuxe424fb8cc4e6634c10f8159b1ff5618cf7bab9c6 < f52e98d16e9bd7dd2b3aef8e38db5cbc9899d6a4affected
LinuxLinux3.3affected
LinuxLinux0 < 3.3unaffected
LinuxLinux5.15.168 <= 5.15.*unaffected
LinuxLinux6.1.111 <= 6.1.*unaffected
LinuxLinux6.6.52 <= 6.6.*unaffected
LinuxLinux6.10.11 <= 6.10.*unaffected
LinuxLinux6.11 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

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

CVE Program Container

Additional References

References