CVE-2024-47728: bpf: Zero former ARG_PTR_TO_{LONGINT} args in case of error

mediumCVSS 5.5CVE-2024-47728

CSIRTS triage

vendor: Linux product: Linux Kernel Memory corruption

What: Zero initialization of former ARG_PTR_TO_LONGINT arguments is missing in the eBPF verifier on error paths, potentially exposing uninitialized memory.
Who is affected: Systems with eBPF programs using ARG_PTR_TO_LONGINT arguments.
Urgency: Medium priority; not currently exploited but represents a memory safety issue that could be leveraged.
Action: Update to a patched Linux kernel version that includes the ARG_PTR_TO_LONGINT initialization fix.

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: 2026-08-06
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-47728

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-2024-477280.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 15% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2024-47728	coverage & exploitation status	NVD · CVE.org

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