CVE-2026-52943: net: skbuff: fix missing zerocopy reference in pskb_carve helpers

highCVSS 7.8CVE-2026-52943

CSIRTS triage

Other

What: This vulnerability involves a missing zerocopy reference in the pskb_carve helpers.
Who is affected: Deployments using the affected kernel networking stack.
Urgency: Remediation is important due to the high severity rating, although exploitation is not currently reported.
Action: Update to the latest kernel version that addresses this issue.

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

Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: high — CVSS 7.8
Published: 2026-06-09
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-52943

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-2026-529430.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 15% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-52943	coverage & exploitation status	NVD · CVE.org

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