CVE-2026-43030

HIGHNVD 7.87.8—

7.8

In the Linux kernel, the following vulnerability has been resolved:

bpf: Fix regsafe() for pointers to packet

In case rold->reg->range == BEYOND_PKT_END && rcur->reg->range == N regsafe() may return true which may lead to current state with valid packet range not being explored. Fix the bug.

CVSS v3: 7.8
EG Score: 7.8(high)
EPSS: 2.5%
KEV: Not listed

Published

May 1, 2026

Last Modified

May 8, 2026

Advisory Details (8)

Auto-updated May 3, 2026

No patch confirmed yet.

generic

bpf: Fix regsafe() for pointers to packet - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ca995b1462ec6db1e869100ba1fb7356bd3f22f0

generic

bpf: Fix regsafe() for pointers to packet - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b99d82706bd1511bb875e3de7154698fd9215c99

generic

bpf: Fix regsafe() for pointers to packet - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b52f6d0ef7b308f9d05bbddb78749852f28e8e40

generic

bpf: Fix regsafe() for pointers to packet - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a8502a79e832b861e99218cbd2d8f4312d62e225

generic

bpf: Fix regsafe() for pointers to packet - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8aebe18069394f4a79d2d82080a0f806da449996

generic

bpf: Fix regsafe() for pointers to packet - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7241da033fdc507b920e092dab1f97b945cb0370

generic

bpf: Fix regsafe() for pointers to packet - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/37db6b9726d0bcf91cbdf9d63b558c50da49f968

generic

bpf: Fix regsafe() for pointers to packet - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/015a74476dc1ab6923d89f1ee009aaf43faa7185

Data Freshness Timeline

(refreshed 12× in last 7d / 18× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-26 13:44 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-20 22:38 UTCepss_batch
2026-05-20 22:38 UTCepss_batch
2026-05-20 14:51 UTCEG score recompute
2026-05-20 14:50 UTCGHSA enrichment
2026-05-20 11:22 UTCepss_batch
2026-05-20 11:22 UTCepss_batch

Frequently asked(5)

What is CVE-2026-43030?

CVE-2026-43030 is a high vulnerability published on May 1, 2026. In the Linux kernel, the following vulnerability has been resolved: bpf: Fix regsafe() for pointers to packet In case rold->reg->range == BEYONDPKTEND && rcur->reg->range == N regsafe() may return true which may lead to current state with valid packet range not being explored. Fix the bug.

When was CVE-2026-43030 disclosed?

CVE-2026-43030 was first published in the National Vulnerability Database on May 1, 2026, with the most recent update on May 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-43030 actively exploited?

CVE-2026-43030 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-43030?

CVE-2026-43030 has a CVSS v3 base score of 7.8 (NVD).

How do I remediate CVE-2026-43030?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43030, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2026-43030

📅 Published

🔄 Last Modified

📋 Advisory Details (8)

bpf: Fix regsafe() for pointers to packet - kernel/git/stable/linux.git - Linux kernel stable tree

bpf: Fix regsafe() for pointers to packet - kernel/git/stable/linux.git - Linux kernel stable tree

bpf: Fix regsafe() for pointers to packet - kernel/git/stable/linux.git - Linux kernel stable tree

bpf: Fix regsafe() for pointers to packet - kernel/git/stable/linux.git - Linux kernel stable tree

bpf: Fix regsafe() for pointers to packet - kernel/git/stable/linux.git - Linux kernel stable tree

bpf: Fix regsafe() for pointers to packet - kernel/git/stable/linux.git - Linux kernel stable tree

bpf: Fix regsafe() for pointers to packet - kernel/git/stable/linux.git - Linux kernel stable tree

bpf: Fix regsafe() for pointers to packet - kernel/git/stable/linux.git - Linux kernel stable tree

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2026-43030?

Published

Last Modified

Advisory Details (8)

Frequently asked(5)