CVE-2021-47474
What it is
In the Linux kernel, the following vulnerability has been resolved: comedi: vmk80xx: fix bulk-buffer overflow The driver is using endpoint-sized buffers but must not assume that the tx and rx buffers are of equal size or a malicious device could overflow the slab-allocated receive buffer when doing bulk transfers.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 0.3% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.3% in the next 30 days (EPSS).
- Severity: 7.8 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.3% · EPSS, next 30 days
- Weakness
- CWE-787 · Out-of-bounds write
- Record status
- Analyzed
Affected
- Linux Kernel < 4.4.292
- Linux Kernel < 4.9.290
- Linux Kernel < 4.14.255
- Linux Kernel < 4.19.217
- Linux Kernel < 5.4.159
- Linux Kernel < 5.10.79
- Linux Kernel < 5.14.18
- Linux Kernel < 5.15.2
Attack profile CVSS 3.1 · 7.8
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2021-47474.md and follow it. Check whether this project is affected by CVE-2021-47474. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://git.kernel.org/stable/c/063f576c43d589a4c153554b681d32b3f8317c7b
- https://git.kernel.org/stable/c/0866dcaa828c21bc2f94dac00e086078f11b5772
- https://git.kernel.org/stable/c/1ae4715121a57bc6fa29fd992127b01907f2f993
- https://git.kernel.org/stable/c/47b4636ebdbeba2044b3db937c4d2b6a4fe3d0f2
- https://git.kernel.org/stable/c/78cdfd62bd54af615fba9e3ca1ba35de39d3871d
- https://git.kernel.org/stable/c/7b0e356189327287d0eb98ec081bd6dd97068cd3
- https://git.kernel.org/stable/c/7cfb35db607760698d299fd1cf7402dfa8f09973
- https://git.kernel.org/stable/c/b7fd7f3387f070215e6be341e68eb5c087eeecc0
- https://git.kernel.org/stable/c/e0e6a63fd97ad95fe05dfd77268a1952551e11a7
- https://git.kernel.org/stable/c/063f576c43d589a4c153554b681d32b3f8317c7b
References
- https://git.kernel.org/stable/c/063f576c43d589a4c153554b681d32b3f8317c7b
- https://git.kernel.org/stable/c/0866dcaa828c21bc2f94dac00e086078f11b5772
- https://git.kernel.org/stable/c/1ae4715121a57bc6fa29fd992127b01907f2f993
- https://git.kernel.org/stable/c/47b4636ebdbeba2044b3db937c4d2b6a4fe3d0f2
- https://git.kernel.org/stable/c/78cdfd62bd54af615fba9e3ca1ba35de39d3871d
- https://git.kernel.org/stable/c/7b0e356189327287d0eb98ec081bd6dd97068cd3
- https://git.kernel.org/stable/c/7cfb35db607760698d299fd1cf7402dfa8f09973
- https://git.kernel.org/stable/c/b7fd7f3387f070215e6be341e68eb5c087eeecc0
- https://git.kernel.org/stable/c/e0e6a63fd97ad95fe05dfd77268a1952551e11a7
- https://git.kernel.org/stable/c/063f576c43d589a4c153554b681d32b3f8317c7b
- https://git.kernel.org/stable/c/0866dcaa828c21bc2f94dac00e086078f11b5772
- https://git.kernel.org/stable/c/1ae4715121a57bc6fa29fd992127b01907f2f993
- https://git.kernel.org/stable/c/47b4636ebdbeba2044b3db937c4d2b6a4fe3d0f2
- https://git.kernel.org/stable/c/78cdfd62bd54af615fba9e3ca1ba35de39d3871d
- https://git.kernel.org/stable/c/7b0e356189327287d0eb98ec081bd6dd97068cd3
- https://git.kernel.org/stable/c/7cfb35db607760698d299fd1cf7402dfa8f09973
- https://git.kernel.org/stable/c/b7fd7f3387f070215e6be341e68eb5c087eeecc0
- https://git.kernel.org/stable/c/e0e6a63fd97ad95fe05dfd77268a1952551e11a7