CVE-2023-53680
What it is
In the Linux kernel, the following vulnerability has been resolved: NFSD: Avoid calling OPDESC() with ops->opnum == OP_ILLEGAL OPDESC() simply indexes into nfsd4_ops[] by the op's operation number, without range checking that value. It assumes callers are careful to avoid calling it with an out-of-bounds opnum value. nfsd4_decode_compound() is not so careful, and can invoke OPDESC() with opnum set to OP_ILLEGAL, which is 10044 -- well beyond the end of nfsd4_ops[].
At a glance
- Exploitability
- Can be exploited over the network without logging in. High risk of 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: 7.5 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
- Modified
Affected
- Linux Kernel < 5.10.220
- Linux Kernel < 5.15.107
- Linux Kernel < 6.1.24
- Linux Kernel < 6.2.11
- Linux Kernel 6.3
Attack profile CVSS 3.1 · 7.5
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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-2023-53680.md and follow it. Check whether this project is affected by CVE-2023-53680. 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/50827896c365e0f6c8b55ed56d444dafd87c92c5
- https://git.kernel.org/stable/c/804d8e0a6e54427268790472781e03bc243f4ee3
- https://git.kernel.org/stable/c/a64160124d5a078be0c380b1e8a0bad2d040d3a1
- https://git.kernel.org/stable/c/f352c41fa718482979e7e6b71b4da2b718e381cc
- https://git.kernel.org/stable/c/ffcbcf087581ae68ddc0a21460f7ecd4315bdd0e
References
- https://git.kernel.org/stable/c/50827896c365e0f6c8b55ed56d444dafd87c92c5
- https://git.kernel.org/stable/c/804d8e0a6e54427268790472781e03bc243f4ee3
- https://git.kernel.org/stable/c/a64160124d5a078be0c380b1e8a0bad2d040d3a1
- https://git.kernel.org/stable/c/f352c41fa718482979e7e6b71b4da2b718e381cc
- https://git.kernel.org/stable/c/ffcbcf087581ae68ddc0a21460f7ecd4315bdd0e