CVE-2026-64352: bpf: Allow LPM map access from sleepable BPF programs

mediumCVSS 5.5CVE-2026-64352

CSIRTS triage

product: bpfOther

What: The vulnerability allows LPM map access from sleepable BPF programs.
Who is affected: Deployments using bpf are affected.
Urgency: Remediation urgency is unclear due to unknown severity and no exploitation reported.
Action: Monitor for updates regarding this issue.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: medium — CVSS 5.5
Published: 2026-07-14
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-64352

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-643520.17% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 7% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-64352	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for bpf

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

highCVE-2026-64548: In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: reject overf…nvd · 2026-07-27
highCVE-2026-64545: In the Linux kernel, the following vulnerability has been resolved: net, bpf: check master for…nvd · 2026-07-27
unknownCVE-2026-64508: In the Linux kernel, the following vulnerability has been resolved: bpf: Support for hardening…nvd · 2026-07-25
unknownCVE-2026-64507: In the Linux kernel, the following vulnerability has been resolved: x86/bugs: Enable IBPB flus…nvd · 2026-07-25
criticalCVE-2026-64355: In the Linux kernel, the following vulnerability has been resolved: bpf: Reject fragmented fra…nvd · 2026-07-25
highCVE-2026-64354: In the Linux kernel, the following vulnerability has been resolved: bpf: Validate BTF repeated…nvd · 2026-07-25