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Vulnerability record · CVE-2026-45932 · published 27 May 2026

CVE-2026-45932: Linux kernel vulnerability

Linux · Linux Kernel

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.

7.3 CVSS 3.1 High EPSS 0.18% · top 93.1% Undergoing Analysis
7.3CVSS 3.1 base score
0.18%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References
24 Jun 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/3f04cc1e5374da4c5e791ae010a06cfea7bacbe6 Patch
https://git.kernel.org/stable/c/4e0772cded109c238411f2fac36ac39302758b81 Patch
https://git.kernel.org/stable/c/ae23bc81ddf7c17b663c4ed1b21e35527b0a7131 Patch

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Source: NIST National Vulnerability Database (record CVE-2026-45932), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.