CVE-2022-49208 Details
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.
An integer underflow vulnerability has been identified in the Linux kernel's RDMA/irdma component. The issue arises in the 'irdma_sc_ceq_init()' function within the 'ctrl.c' file, where a subtraction operation could potentially underflow. This vulnerability is linked to the 'max_ceqs' value, which is derived from the firmware and could be zero, leading to the underflow condition.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Oct 1, 2025References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/6f6dbb819dfc1a35bcb8b709b5c83a3ea8beff75 | kernel.org | Patch |
| https://git.kernel.org/stable/c/7340c3675d7ac946f4019b84cd7c64ed542dfe4c | kernel.org | Patch |
| https://git.kernel.org/stable/c/d52dab6e03550f9c97121b0c11c0a3ed78ee76a4 | kernel.org | Patch |
| https://git.kernel.org/stable/c/f21056f15bbeacab7b4b87af232f5599d1f2bff1 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-191 | Integer Underflow (Wrap or Wraparound) | [email protected] |
| CWE-191 | Integer Underflow (Wrap or Wraparound) | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 5.14, < 5.15.33 >= 5.16, < 5.16.19 >= 5.17, < 5.17.2 |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Oct 1, 2025 | CVE Modified | CISA-ADP |
| Mar 18, 2025 | Initial Analysis | [email protected] |
| Feb 26, 2025 | New CVE Received | kernel.org |