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CVE-2021-47485
IB/qib: Protect from buffer overflow in struct qib_user_sdma_pkt fields
High7.8EPSS 0.24%
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
In the Linux kernel, the following vulnerability has been resolved: IB/qib: Protect from buffer overflow in struct qib_user_sdma_pkt fields Overflowing either addrlimit or bytes_togo can allow userspace to trigger a buffer overflow of kernel memory. Check for overflows in all the places doing math on user controlled buffers.
Timeline
ID reserved
By Linux
Published
- 2 years later
· 2 years 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 |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.24% · top 85% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Weakness
Affected products
- affected f931551bafe1f10ded7f5282e2aa162c267a2e5d – < bda41654b6e0c125a624ca35d6d20beb8015b5d0
- affected f931551bafe1f10ded7f5282e2aa162c267a2e5d – < 3f57c3f67fd93b4da86aeffea1ca32c484d054ad
- affected f931551bafe1f10ded7f5282e2aa162c267a2e5d – < 60833707b968d5ae02a75edb7886dcd4a957cf0d
- affected f931551bafe1f10ded7f5282e2aa162c267a2e5d – < 73d2892148aa4397a885b4f4afcfc5b27a325c42
- affected f931551bafe1f10ded7f5282e2aa162c267a2e5d – < 0f8cdfff06829a0b0348b6debc29ff6a61967724
- affected f931551bafe1f10ded7f5282e2aa162c267a2e5d – < c3e17e58f571f34c51aeb17274ed02c2ed5cf780
- affected f931551bafe1f10ded7f5282e2aa162c267a2e5d – < 0d4395477741608d123dad51def9fe50b7ebe952
- affected f931551bafe1f10ded7f5282e2aa162c267a2e5d – < d39bf40e55e666b5905fdbd46a0dced030ce87be
- affected 2.6.35
- unaffected < 2.6.35
- unaffected 4.4.292 – ≤ 4.4.*
- unaffected 4.9.290 – ≤ 4.9.*
- unaffected 4.14.255 – ≤ 4.14.*
- unaffected 4.19.216 – ≤ 4.19.*
- unaffected 5.4.157 – ≤ 5.4.*
- unaffected 5.10.77 – ≤ 5.10.*
- unaffected 5.14.16 – ≤ 5.14.*
- unaffected 5.15 – ≤ *
References (8)
- https://git.kernel.org/stable/c/bda41654b6e0c125a624ca35d6d20beb8015b5d0 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/3f57c3f67fd93b4da86aeffea1ca32c484d054ad (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/60833707b968d5ae02a75edb7886dcd4a957cf0d (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/73d2892148aa4397a885b4f4afcfc5b27a325c42 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/0f8cdfff06829a0b0348b6debc29ff6a61967724 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/c3e17e58f571f34c51aeb17274ed02c2ed5cf780 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/0d4395477741608d123dad51def9fe50b7ebe952 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/d39bf40e55e666b5905fdbd46a0dced030ce87be (opens in a new tab)x_transferred
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-2021-47485)Record last updated .