CVE-2021-47404
HID: betop: fix slab-out-of-bounds Write in betop_probe
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
In the Linux kernel, the following vulnerability has been resolved: HID: betop: fix slab-out-of-bounds Write in betop_probe Syzbot reported slab-out-of-bounds Write bug in hid-betopff driver. The problem is the driver assumes the device must have an input report but some malicious devices violate this assumption. So this patch checks hid_device's input is non empty before it's been used.
Timeline
ID reserved
By Linux
Published
- 24 months later
· 24 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 |
|---|---|---|---|
| NVDNVD · Analyzed | 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)
- 0.26% · top 82% 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: High 7.8.
Weakness
Affected products
- affected 52cd7785f3cdd2724f4efb5b21dbc75d6f9ccef4 – < a4faa7153b87fbcfe4be15f4278676f79ca6e019
- affected 52cd7785f3cdd2724f4efb5b21dbc75d6f9ccef4 – < 6fc4476dda58f6c00097c7ddec3b772513f57525
- affected 52cd7785f3cdd2724f4efb5b21dbc75d6f9ccef4 – < 1c83c38dec83d57bc18d0c01d82c413d3b34ccb9
- affected 52cd7785f3cdd2724f4efb5b21dbc75d6f9ccef4 – < bb8b72374db69afa25a5b65cf1c092860c6fe914
- affected 52cd7785f3cdd2724f4efb5b21dbc75d6f9ccef4 – < fe9bb925e7096509711660d39c0493a1546e9550
- affected 52cd7785f3cdd2724f4efb5b21dbc75d6f9ccef4 – < dedfc35a2de2bae9fa3da8210a05bfd515f83fee
- affected 52cd7785f3cdd2724f4efb5b21dbc75d6f9ccef4 – < 708107b80aa616976d1c5fa60ac0c1390749db5e
- affected 52cd7785f3cdd2724f4efb5b21dbc75d6f9ccef4 – < 1e4ce418b1cb1a810256b5fb3fd33d22d1325993
- affected 4.0
- unaffected < 4.0
- unaffected 4.4.286 – ≤ 4.4.*
- unaffected 4.9.285 – ≤ 4.9.*
- unaffected 4.14.249 – ≤ 4.14.*
- unaffected 4.19.209 – ≤ 4.19.*
- unaffected 5.4.151 – ≤ 5.4.*
- unaffected 5.10.71 – ≤ 5.10.*
- unaffected 5.14.10 – ≤ 5.14.*
- unaffected 5.15 – ≤ *
References (8)
- https://git.kernel.org/stable/c/a4faa7153b87fbcfe4be15f4278676f79ca6e019 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/6fc4476dda58f6c00097c7ddec3b772513f57525 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/1c83c38dec83d57bc18d0c01d82c413d3b34ccb9 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/bb8b72374db69afa25a5b65cf1c092860c6fe914 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/fe9bb925e7096509711660d39c0493a1546e9550 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/dedfc35a2de2bae9fa3da8210a05bfd515f83fee (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/708107b80aa616976d1c5fa60ac0c1390749db5e (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/1e4ce418b1cb1a810256b5fb3fd33d22d1325993 (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-2021-47404)Record last updated .