bpf: Fix tcx/netkit detach permissions when prog fd isn't given
CVE-2026-45932 · published 27 May 2026
How serious is it
- Severity: high, CVSS score 7.3 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-2026-45932?
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: e420bed025071a623d2720a92bc2245c84757ecb to < 8e1623e7d61faf16cbadc80550da874303611ff5, e420bed025071a623d2720a92bc2245c84757ecb to < 0c249f523175963b0a746bba673ecebdf6cefd86, e420bed025071a623d2720a92bc2245c84757ecb to < 4e0772cded109c238411f2fac36ac39302758b81, e420bed025071a623d2720a92bc2245c84757ecb to < 3f04cc1e5374da4c5e791ae010a06cfea7bacbe6
- Linux Linux: 6.6
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:
bpf: Fix tcx/netkit detach permissions when prog fd isn't given
This commit fixes a security issue where BPF_PROG_DETACH on tcx or
netkit devices could be executed by any user when no program fd was
provided, bypassing permission checks. The fix adds a capability
check for CAP_NET_ADMIN or CAP_SYS_ADMIN in this case.
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/8e1623e7d61faf16cbadc80550da874303611ff5
- git.kernel.org/stable/c/0c249f523175963b0a746bba673ecebdf6cefd86
- git.kernel.org/stable/c/4e0772cded109c238411f2fac36ac39302758b81
- git.kernel.org/stable/c/3f04cc1e5374da4c5e791ae010a06cfea7bacbe6
- git.kernel.org/stable/c/ae23bc81ddf7c17b663c4ed1b21e35527b0a7131
Merged from CVE List. Last updated 25 Oct 2026. All vulnerabilities · RSS · JSON