CVE-2026-45932
CVE-2026-45932 is a high-severity vulnerability in Linux Linux Kernel with a CVSS 3.x base score of 7.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.
Key facts
- Severity: High (CVSS 3.x base score 7.3)
- EPSS exploit prediction: 0% (3rd percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-32216
- Affected product: Linux Linux Kernel
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2026-45932?
- 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.
- How severe is CVE-2026-45932?
- CVE-2026-45932 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability high.
- Is CVE-2026-45932 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-45932?
- CVE-2026-45932 affects Linux Linux Kernel. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-45932?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2026-45932 have an EU (EUVD) identifier?
- Yes. CVE-2026-45932 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-32216.
- When was CVE-2026-45932 published?
- CVE-2026-45932 was published on 2026-05-27 and last updated on 2026-06-24.
References
- https://git.kernel.org/stable/c/3f04cc1e5374da4c5e791ae010a06cfea7bacbe6
- https://git.kernel.org/stable/c/4e0772cded109c238411f2fac36ac39302758b81
- https://git.kernel.org/stable/c/ae23bc81ddf7c17b663c4ed1b21e35527b0a7131
Affected products (1)
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
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