Bug 2481905 (CVE-2026-45932) - CVE-2026-45932 kernel: bpf: Fix tcx/netkit detach permissions when prog fd isn't given
Summary: CVE-2026-45932 kernel: bpf: Fix tcx/netkit detach permissions when prog fd is...
Keywords:
Status: NEW
Alias: CVE-2026-45932
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-27 15:01 UTC by OSIDB Bzimport
Modified: 2026-06-17 09:52 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:


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Description OSIDB Bzimport 2026-05-27 15:01:40 UTC
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.


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