CVE-2026-63795: 9p: avoid putting oldfid in p9_client_walk() error path

CSIRTS triage

What: An issue has been identified in the p9_client_walk() function related to error handling.
Who is affected: Deployments using the 9p protocol may be affected by this issue.
Urgency: Remediation is recommended as the severity is unknown but could impact functionality.
Action: Apply the latest patch for 9p to address this issue.

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

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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-2026-637950.48% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 39% of all scored CVEs.

CVE	CSIRTS overview	External
CVE-2026-63795	coverage & exploitation status	NVD · CVE.org

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