CVE-2021-47168
What it is
In the Linux kernel, the following vulnerability has been resolved: NFS: fix an incorrect limit in filelayout_decode_layout() The "sizeof(struct nfs_fh)" is two bytes too large and could lead to memory corruption. It should be NFS_MAXFHSIZE because that's the size of the ->data[] buffer. I reversed the size of the arguments to put the variable on the left.
At a glance
- Exploitability
- Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 0.8% 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: 0.8% in the next 30 days (EPSS).
- Severity: 9.8 CRITICAL (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.8% · EPSS, next 30 days
- Weakness
- CWE-787 · Out-of-bounds write
- Record status
- Modified
Affected
- Linux Kernel < 4.4.271
- Linux Kernel < 4.9.271
- Linux Kernel < 4.14.235
- Linux Kernel < 4.19.193
- Linux Kernel < 5.4.124
- Linux Kernel < 5.10.42
- Linux Kernel < 5.12.9
- Linux Kernel 5.13
Attack profile CVSS 3.1 · 9.8
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/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-2021-47168.md and follow it. Check whether this project is affected by CVE-2021-47168. 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/769b01ea68b6c49dc3cde6adf7e53927dacbd3a8
- https://git.kernel.org/stable/c/945ebef997227ca8c20bad7f8a8358c8ee57a84a
- https://git.kernel.org/stable/c/9b367fe770b1b80d7bf64ed0d177544a44405f6e
- https://git.kernel.org/stable/c/9d280ab53df1d4a1043bd7a9e7c6a2f9cfbfe040
- https://git.kernel.org/stable/c/b287521e9e94bb342ebe5fd8c3fd7db9aef4e6f1
- https://git.kernel.org/stable/c/d34fb628f6ef522f996205a9e578216bbee09e84
- https://git.kernel.org/stable/c/e411df81cd862ef3d5b878120b2a2fef0ca9cdb1
- https://git.kernel.org/stable/c/f299522eda1566cbfbae4b15c82970fc41b03714
- https://git.kernel.org/stable/c/769b01ea68b6c49dc3cde6adf7e53927dacbd3a8
- https://git.kernel.org/stable/c/945ebef997227ca8c20bad7f8a8358c8ee57a84a
References
- https://git.kernel.org/stable/c/769b01ea68b6c49dc3cde6adf7e53927dacbd3a8
- https://git.kernel.org/stable/c/945ebef997227ca8c20bad7f8a8358c8ee57a84a
- https://git.kernel.org/stable/c/9b367fe770b1b80d7bf64ed0d177544a44405f6e
- https://git.kernel.org/stable/c/9d280ab53df1d4a1043bd7a9e7c6a2f9cfbfe040
- https://git.kernel.org/stable/c/b287521e9e94bb342ebe5fd8c3fd7db9aef4e6f1
- https://git.kernel.org/stable/c/d34fb628f6ef522f996205a9e578216bbee09e84
- https://git.kernel.org/stable/c/e411df81cd862ef3d5b878120b2a2fef0ca9cdb1
- https://git.kernel.org/stable/c/f299522eda1566cbfbae4b15c82970fc41b03714
- https://git.kernel.org/stable/c/769b01ea68b6c49dc3cde6adf7e53927dacbd3a8
- https://git.kernel.org/stable/c/945ebef997227ca8c20bad7f8a8358c8ee57a84a
- https://git.kernel.org/stable/c/9b367fe770b1b80d7bf64ed0d177544a44405f6e
- https://git.kernel.org/stable/c/9d280ab53df1d4a1043bd7a9e7c6a2f9cfbfe040
- https://git.kernel.org/stable/c/b287521e9e94bb342ebe5fd8c3fd7db9aef4e6f1
- https://git.kernel.org/stable/c/d34fb628f6ef522f996205a9e578216bbee09e84
- https://git.kernel.org/stable/c/e411df81cd862ef3d5b878120b2a2fef0ca9cdb1
- https://git.kernel.org/stable/c/f299522eda1566cbfbae4b15c82970fc41b03714