CVE-2025-39742

Summary

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

RDMA: hfi1: fix possible divide-by-zero in find_hw_thread_mask()

The function divides number of online CPUs by num_core_siblings, and later checks the divider by zero. This implies a possibility to get and divide-by-zero runtime error. Fix it by moving the check prior to division. This also helps to save one indentation level.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxb094a36f90975373c3a241839869217a65f17d81 < 9bba1a9994c523b44db64f63b564b4719ea2b7efaffected
LinuxLinuxb094a36f90975373c3a241839869217a65f17d81 < 1a7cf828ed861de5be1aff99e10f114b363c19d3affected
LinuxLinuxb094a36f90975373c3a241839869217a65f17d81 < 9d3211cb61a0773a2440d0a0698c1e6e7429f907affected
LinuxLinuxb094a36f90975373c3a241839869217a65f17d81 < 4b4317b0d758ff92ba96f4e448a8992a6fe607bfaffected
LinuxLinuxb094a36f90975373c3a241839869217a65f17d81 < 89fdac333a17ed990b41565630ef4791782e02f5affected
LinuxLinuxb094a36f90975373c3a241839869217a65f17d81 < 9b05e91afe948ed819bf87d7ba0fccf451ed79a6affected
LinuxLinuxb094a36f90975373c3a241839869217a65f17d81 < 31d0599a23efdbfe579bfbd1eb8f8c942f13744daffected
LinuxLinuxb094a36f90975373c3a241839869217a65f17d81 < ac53f377393cc85156afdc90b636e84e544a6f96affected
LinuxLinuxb094a36f90975373c3a241839869217a65f17d81 < 59f7d2138591ef8f0e4e4ab5f1ab674e8181ad3aaffected
LinuxLinux4.8affected
LinuxLinux0 < 4.8unaffected
LinuxLinux5.4.297 <= 5.4.*unaffected
LinuxLinux5.10.241 <= 5.10.*unaffected
LinuxLinux5.15.190 <= 5.15.*unaffected
LinuxLinux6.1.149 <= 6.1.*unaffected
LinuxLinux6.6.103 <= 6.6.*unaffected
LinuxLinux6.12.43 <= 6.12.*unaffected
LinuxLinux6.15.11 <= 6.15.*unaffected
LinuxLinux6.16.2 <= 6.16.*unaffected
LinuxLinux6.17 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

Additional References

References