Riskcovery

CVE-2022-49208

RDMA/irdma: Prevent some integer underflows

State
Published
Severity
5.5 Medium
Published
Feb 26, 2025
Updated
May 11, 2026
Reserved
Feb 26, 2025

Read the record on cve.org

Description

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

RDMA/irdma: Prevent some integer underflows

My static checker complains that:

drivers/infiniband/hw/irdma/ctrl.c:3605 irdma_sc_ceq_init() warn: can subtract underflow 'info->dev->hmc_fpm_misc.max_ceqs'?

It appears that "info->dev->hmc_fpm_misc.max_ceqs" comes from the firmware in irdma_sc_parse_fpm_query_buf() so, yes, there is a chance that it could be zero. Even if we trust the firmware, it's easy enough to change the condition just as a hardenning measure.

Scores

CVSSScoreVectorSource
3.15.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HCISA-ADP

Weaknesses

  • CWE-191 Integer Underflow (Wrap or Wraparound)

Affected Products

ProductVersions
LinuxLinux
  • 3f49d684256963d3f27dfb9d9ff228e2255be78d to before d52dab6e03550f9c97121b0c11c0a3ed78ee76a4Affected
  • 3f49d684256963d3f27dfb9d9ff228e2255be78d to before f21056f15bbeacab7b4b87af232f5599d1f2bff1Affected
  • 3f49d684256963d3f27dfb9d9ff228e2255be78d to before 7340c3675d7ac946f4019b84cd7c64ed542dfe4cAffected
  • 3f49d684256963d3f27dfb9d9ff228e2255be78d to before 6f6dbb819dfc1a35bcb8b709b5c83a3ea8beff75Affected
LinuxLinux
  • 5.14Affected
  • before 5.14Not affected
  • 5.15.33 through 5.15.*Not affected
  • 5.16.19 through 5.16.*Not affected
  • 5.17.2 through 5.17.*Not affected
  • 5.18 and laterNot affected

References

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