VulnSocial

CVE-2026-29009Disclosure(denx / u-boot)

LOWCVSS 9.8 · CRITICAL

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

U-Boot before 2026.07-rc2 contains a buffer overflow vulnerability in nfs_readlink_reply() (net/nfs-common.c) when CONFIG_CMD_NFS is enabled, allowing a malicious or compromised NFS server to overflow the 2048-byte nfs_path_buff buffer by returning multiple relative symlink targets that are appended without cumulative length validation. Attackers can send two or more READLINK responses containing relative symlink targets of approximately 1100 bytes each to corrupt adjacent BSS variables including nfs_server_ip, nfs_server_mount_port, nfs_server_port, nfs_our_port, nfs_state, and rpc_id, potentially achieving memory corruption and control over the NFS client state machine.

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0.0/ 10 priority

Sources & remediation

Exploit / PoC references
Vendor / third-party advisories
Other references
Weakness type (CWE)
CWE-120

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • u-boot

Threat summary

  • 2 mentions across 1 observed day

What's happening

  • Technical details provided in 2 signals
  • Disclosure: 2 classified signals
  • 2 total mentions across 1 day

Affected systems

Vendors
denx
Products
u-boot

1 version affected across 1 product

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-07-08: 2Technical Details · 2026-07-08: 207-08
Signal classification1 categories
Disclosure
2100.0%
Referenced assets2 URLs
By indicator
Full discourse2 posts
  • Infoflowcloud@infoflowcloud
    Disclosure

    🚨*CVE* CVE-2026-29009 U-Boot through 2026.04-rc3 contains a buffer overflow vulnerability in nfs_readlink_reply() (net/nfs-common.c) when CONFIG_CMD_NFS is enabled, allowing a malicious or… https://www.cve.org/CVERecord?id=CVE-2026-29009 ----- Traducción: CVE-2026-29009 U-B… http://infoflow.cloud`

    Post summary

    The tweet announces the discovery of a buffer overflow in U‑Boot’s NFS readlink reply function, describing the vulnerability but providing no evidence of exploitation, PoC, or patch information.

    0000042
    91 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-29009 U-Boot through 2026.04-rc3 contains a buffer overflow vulnerability in nfs_readlink_reply() (net/nfs-common.c) when CONFIG_CMD_NFS is enabled, allowing a malicious or… https://www.cve.org/CVERecord?id=CVE-2026-29009

    Post summary

    The text announces a buffer overflow vulnerability in U-Boot’s NFS component but provides neither a PoC nor exploit code, and no patch or mitigation steps are mentioned.

    00000731
    57.8K followersView on X
CPE platform detail4 entries

4 of 4 entries

PartVendorProductVersionTarget SWTarget HW
Appdenxu-boot---
Appdenxu-boot2026.04--
Appdenxu-boot2026.04--
Appdenxu-boot2026.04--

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