CVE-2026-29009
Buffer overflow in U-Boot NFS READLINK handling allows remote memory corruption.
Is CVE-2026-29009 being exploited?
Not confirmed. CVE-2026-29009 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.74% probability of exploitation in the next 30 days.
How severe is CVE-2026-29009?
CVE-2026-29009 is rated High. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-29009?
Not known from our data. No patch reference has been recorded for CVE-2026-29009, which is not the same as no patch existing — a fix may have shipped without a tagged reference, or after this record was written. The vendor advisory is the only authority on whether a fix exists, and mitigations may be available regardless.
What does CVE-2026-29009 affect?
CVE-2026-29009 affects U-Boot (<= 2026.04-rc3) with CONFIG_CMD_NFS enabled, Embedded/network-booted devices using U-Boot NFS client. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-29009?
Disable CONFIG_CMD_NFS or block untrusted NFS servers; apply vendor/U-Boot patch when released.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote memory corruption via malicious NFS READLINK responses; can corrupt NFS client state and enable takeover of the client.
Immediate action required
- affected< 2026.07-rc2
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.