CVE-2022-49208
RDMA/irdma: Prevent some integer underflows
- Published
- Updated
- Reserved
- Assigned by
- Linux
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.
Timeline
ID reserved
By Linux
Published
- 15 months later
· 15 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.27% · top 81% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Weakness
Affected products
- affected 3f49d684256963d3f27dfb9d9ff228e2255be78d – < d52dab6e03550f9c97121b0c11c0a3ed78ee76a4
- affected 3f49d684256963d3f27dfb9d9ff228e2255be78d – < f21056f15bbeacab7b4b87af232f5599d1f2bff1
- affected 3f49d684256963d3f27dfb9d9ff228e2255be78d – < 7340c3675d7ac946f4019b84cd7c64ed542dfe4c
- affected 3f49d684256963d3f27dfb9d9ff228e2255be78d – < 6f6dbb819dfc1a35bcb8b709b5c83a3ea8beff75
- affected 5.14
- unaffected < 5.14
- unaffected 5.15.33 – ≤ 5.15.*
- unaffected 5.16.19 – ≤ 5.16.*
- unaffected 5.17.2 – ≤ 5.17.*
- unaffected 5.18 – ≤ *
References (4)
- https://git.kernel.org/stable/c/d52dab6e03550f9c97121b0c11c0a3ed78ee76a4 (opens in a new tab)
- https://git.kernel.org/stable/c/f21056f15bbeacab7b4b87af232f5599d1f2bff1 (opens in a new tab)
- https://git.kernel.org/stable/c/7340c3675d7ac946f4019b84cd7c64ed542dfe4c (opens in a new tab)
- https://git.kernel.org/stable/c/6f6dbb819dfc1a35bcb8b709b5c83a3ea8beff75 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2022-49208)Record last updated .