Upstream information
Description
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 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.SUSE information
Overall state of this security issue: Pending
This issue is currently rated as having important severity.
| CVSS detail | CNA (VulnCheck) | SUSE |
|---|---|---|
| Base Score | 8.2 | 8.2 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H |
| Attack Vector | Network | Network |
| Attack Complexity | Low | Low |
| Privileges Required | None | None |
| User Interaction | None | None |
| Scope | Unchanged | Unchanged |
| Confidentiality Impact | None | None |
| Integrity Impact | Low | Low |
| Availability Impact | High | High |
| CVSSv3 Version | 3.1 | 3.1 |
| CVSS detail | CNA (VulnCheck) | SUSE |
|---|---|---|
| Base Score | 8.8 | 8.8 |
| Vector | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N |
| Attack Vector | Network | Network |
| Attack Complexity | Low | Low |
| Attack Requirements | None | None |
| Privileges Required | None | None |
| User Interaction | None | None |
| Vulnerable System Confidentiality Impact | None | None |
| Vulnerable System Integrity Impact | Low | Low |
| Vulnerable System Availability Impact | High | High |
| Subsequent System Confidentiality Impact | None | None |
| Subsequent System Integrity Impact | None | None |
| Subsequent System Availability Impact | None | None |
| CVSSv4 Version | 4.0 | 4.0 |
Status of this issue by product and package
Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.
| Product(s) | Source package | State |
|---|---|---|
| Products under general support and receiving all security fixes. | ||
| SUSE Linux Enterprise Desktop 15 SP7 | u-boot | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP7 | u-boot | Affected |
| SUSE Linux Enterprise Micro 5.3 | u-boot | Affected |
| SUSE Linux Enterprise Micro 5.4 | u-boot | Affected |
| SUSE Linux Enterprise Micro 5.5 | u-boot | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP7 | u-boot | Affected |
| SUSE Linux Enterprise Server 15 SP7 | u-boot | Affected |
| SUSE Linux Enterprise Server 16.0 | u-boot | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | u-boot | Affected |
| SUSE Linux Micro 6.0 | u-boot | Affected |
| SUSE Linux Micro 6.1 | u-boot | Affected |
| SUSE Linux Micro 6.2 | u-boot | Affected |
| openSUSE Leap 16.0 | u-boot | Affected |
| Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | u-boot | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | u-boot | Affected |
| SUSE Linux Enterprise Server 12 SP5 | u-boot | Affected |
| SUSE Linux Enterprise Server 12 SP5-LTSS | u-boot | Affected |
| SUSE Linux Enterprise Server 15 SP4-LTSS | u-boot | Affected |
| SUSE Linux Enterprise Server 15 SP5-LTSS | u-boot | Affected |
| SUSE Linux Enterprise Server 15 SP6-LTSS | u-boot | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | u-boot | Affected |
| Products past their end of life and not receiving proactive updates anymore. | ||
| SUSE CaaS Platform 4.0 | u-boot | Affected |
| SUSE Enterprise Storage 6 | u-boot | Affected |
| SUSE Enterprise Storage 6 | u-boot-rpi3 | Not affected |
| SUSE Linux Enterprise Desktop 15 SP1 | u-boot | Affected |
| SUSE Linux Enterprise Desktop 15 SP1 | u-boot-rpi3 | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1 | u-boot | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1 | u-boot-rpi3 | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS | u-boot | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS | u-boot-rpi3 | Not affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS | u-boot | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS | u-boot-rpi3 | Not affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP1 | u-boot | Affected |
| SUSE Linux Enterprise Module for Basesystem 15 SP1 | u-boot-rpi3 | Not affected |
| SUSE Linux Enterprise Server 15 SP1 | u-boot | Affected |
| SUSE Linux Enterprise Server 15 SP1 | u-boot-rpi3 | Not affected |
| SUSE Linux Enterprise Server 15 SP1-BCL | u-boot | Affected |
| SUSE Linux Enterprise Server 15 SP1-LTSS | u-boot | Affected |
| SUSE Linux Enterprise Server 15 SP1-LTSS | u-boot-rpi3 | Not affected |
| SUSE Linux Enterprise Server 15 SP2-LTSS | u-boot | Affected |
| SUSE Linux Enterprise Server 15 SP3-LTSS | u-boot | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP1 | u-boot | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP1 | u-boot-rpi3 | Not affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | u-boot | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | u-boot | Affected |
| SUSE Manager Proxy 4.0 | u-boot | Affected |
| SUSE Manager Proxy 4.0 | u-boot-rpi3 | Not affected |
| SUSE Manager Retail Branch Server 4.0 | u-boot | Affected |
| SUSE Manager Retail Branch Server 4.0 | u-boot-rpi3 | Not affected |
| SUSE Manager Server 4.0 | u-boot | Affected |
| SUSE Manager Server 4.0 | u-boot-rpi3 | Not affected |
SUSE Timeline for this CVE
CVE page created: Thu Jul 9 13:25:51 2026CVE page last modified: Thu Jul 9 18:36:01 2026