CVE-2025-39742
RDMA: hfi1: fix possible divide-by-zero in find_hw_thread_mask()
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
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.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
4.8
References 9
git.kernel.org
- stable/c/9bba1a9994c523b44db64f63b564b4719ea2b7ef
- stable/c/1a7cf828ed861de5be1aff99e10f114b363c19d3
- stable/c/9d3211cb61a0773a2440d0a0698c1e6e7429f907
- stable/c/4b4317b0d758ff92ba96f4e448a8992a6fe607bf
- stable/c/89fdac333a17ed990b41565630ef4791782e02f5
- stable/c/9b05e91afe948ed819bf87d7ba0fccf451ed79a6
- stable/c/31d0599a23efdbfe579bfbd1eb8f8c942f13744d
- stable/c/ac53f377393cc85156afdc90b636e84e544a6f96
- stable/c/59f7d2138591ef8f0e4e4ab5f1ab674e8181ad3a