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CVE-2026-45932

bpf: Fix tcx/netkit detach permissions when prog fd isn't given

HIGH
7.3
CVSS Score
Published: May 27, 2026 at 12:17 PM UTC
Updated: October 21, 2026 at 01:18 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.3
Exploit prediction
EPSS 0.2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
95%
6.19 ≤ v < 6.19.46.6 ≤ v < 6.18.146.6e420bed025071a623d2720a92bc2245c84757ecb
Vendor states this is fixed in 3f04cc1e5374da4c5e791ae010a06cfea7bacbe6 (fixed)
Vendor states this is fixed in 4e0772cded109c238411f2fac36ac39302758b81 (fixed)
Vendor states this is fixed in ae23bc81ddf7c17b663c4ed1b21e35527b0a7131 (fixed)
Vendor states this is fixed in 6.12.114 (unaffected)
Vendor states this is fixed in 6.18.14 (unaffected)
Vendor states this is fixed in 6.19.4 (unaffected)
Vendor states this is fixed in 6.6 (unaffected)
Vendor states this is fixed in 6.6.160 (unaffected)
Vendor states this is fixed in 7.0 (unaffected)

References (5)

Patch
Source: cverecord
https://git.kernel.org/stable/c/4e0772cded109c238411f2fac36ac39302758b81
Patch
Source: cverecord
https://git.kernel.org/stable/c/3f04cc1e5374da4c5e791ae010a06cfea7bacbe6
Patch
Source: cverecord
https://git.kernel.org/stable/c/ae23bc81ddf7c17b663c4ed1b21e35527b0a7131
Source: cverecord
https://git.kernel.org/stable/c/8e1623e7d61faf16cbadc80550da874303611ff5
Source: cverecord
https://git.kernel.org/stable/c/0c249f523175963b0a746bba673ecebdf6cefd86

CVSS

7.3HIGHLinux
Vector?

Quick Info

StatusUNDERGOING ANALYSIS
CWE
NVD-CWE-noinfo

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