In the Linux kernel, the following vulnerability has been resolved: net: atm: reject out-of-range traffic classes in QoS validation Rej…
CVE-2026-72297 · published 15 Aug 2026
How serious is it
- Severity: high, CVSS score 7.1 out of 10.
- No exploit prediction (EPSS) score yet.
- Not on the CISA list of exploited vulnerabilities.
- No public exploit in Exploit-DB.
Is your app affected by CVE-2026-72297?
Paste this prompt into Claude Code, Cursor or any AI coding tool: it runs a free Shippable scan of your project and fixes what it finds. Built with Lovable, Bolt or v0? Scan your live app. Or upload your package file.
Who is affected
- Linux Linux: 2.6.12
How to check
- Find out whether you run the affected product and which version, then compare it with the versions above.
How to fix
Copies a prompt for Claude Code, Cursor or Codex that asks it to check whether you run this product.
- Apply the vendor's update or mitigation from the references below. If there is none yet, limit exposure of the affected service until there is.
- If a vulnerable version was live, check your logs and rotate the secrets that server could read.
The advisory
In the Linux kernel, the following vulnerability has been resolved:
net: atm: reject out-of-range traffic classes in QoS validation
Reject ATM traffic classes above ATM_ANYCLASS in check_tp().
SO_ATMQOS stores the supplied QoS after check_qos() succeeds, so
accepting larger values leaves invalid traffic_class values in
vcc->qos.
That bad state later reaches pvc_info(), which indexes class_name[]
with vcc->qos.{rx,tp}.traffic_class. Values above ATM_ANYCLASS cause
an out-of-bounds read when /proc/net/atm/pvc is read.
Tighten the existing QoS validation so invalid traffic_class values
are rejected at the point where user supplied QoS is accepted.
Check your whole app
Dependencies are only half of it. Free and read-only: before you push, run npx shippable-dev scan localhost:3000 in your project folder, no account needed. For your live app, you prove it's yours with a one-line tag first.
References
- git.kernel.org/stable/c/15444b57fdc6fc3f3e22a87f791ae5be81e6ecf5
- git.kernel.org/stable/c/1a6dda72455b399ce9c1a12695471dc4d5c61add
- git.kernel.org/stable/c/2b3e241729e87afed13ac0f666472d5d6ca42e87
- git.kernel.org/stable/c/367acd288bc6255e247cb1a1efbf5c6567cab423
- git.kernel.org/stable/c/513f820b3f0cf4462e17d84c39ed3948d061a6ea
- git.kernel.org/stable/c/806b7b6edc8446e8b94b706807a7090a14d47b5c
- git.kernel.org/stable/c/cdf19f380e46192e7084be559638aab1f6ed86a2
- git.kernel.org/stable/c/e62adb157c2eaad9ad4867ec6cd9af5b9a51b1c7
Merged from NVD. Last updated 23 Oct 2026. All vulnerabilities · RSS · JSON