CVE-2026-10684

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Source
https://cve.org/CVERecord?id=CVE-2026-10684
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-10684.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-10684
Aliases
  • GHSA-9fw2-4429-49q8
Published
2026-07-29T18:03:08Z
Modified
2026-10-28T11:04:01Z
Severity
  • 3.0 (Low) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:L CVSS Calculator
Summary
Out-of-bounds read in coredump shell when printing stored-dump target code
Details

In subsys/debug/coredump/coredump_shell.c, print_coredump_hdr() used the 16-bit tgt_code field of a stored Zephyr coredump header directly as an index into coredump_target_code2str[], a fixed 7-element array of string pointers, with no bounds check.

A stored coredump whose tgt_code is >= 7 causes an out-of-bounds read of a char* up to ~64K entries past the array; that value is passed as the %s argument to shell_print, which dereferences and walks it as a string. The result is either disclosure of device memory contents to the shell user or a crash when the out-of-bounds pointer is unmapped.

The defect is reached via the coredump print shell command (cmd_coredump_print_stored_dump -> pretty_print_coredump -> parse_and_print_coredump -> print_coredump_hdr). The tgt_code field is device-generated and in-range during normal crash handling, so triggering requires local shell access plus the ability to stage or corrupt the stored coredump in the flash/in-memory backend.

Introduced in v4.2.0 (commit 13abd7fe730) and present through v4.4.0; fixed by clamping out-of-range codes to the 'unknown' (index 0) entry.

Database specific 
{
    "cna_assigner":  "zephyr",
    "cwe_ids":  [
        "CWE-125"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/10xxx/CVE-2026-10684.json"
}
References

Affected packages

Git / github.com/zephyrproject-rtos/zephyr

Affected ranges

Type
GIT
Repo
https://github.com/zephyrproject-rtos/zephyr
Events
Introduced
413b789deb391d3a37d06b463288a5fe765ee57e
Fixed
75f67d766726351b30199f9a2bf55803d717a3be
Introduced
684c9e8f32e4373a21098559f748f06915f950c9
Fixed
dccb09599635bdff17633fa7e9dab014b91dce90
Fixed
a9226324e8bd1f8adecafb1b6e0603f781dc750c
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "4.2.0"
                },
                {
                    "fixed":  "4.3.1"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandardRange"
        },
        {
            "range":  [
                {
                    "introduced":  "4.4.0"
                },
                {
                    "fixed":  "4.4.2"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandardRange"
        },
        {
            "range":  [
                {
                    "fixed":  "a9226324e8bd1f8adecafb1b6e0603f781dc750c"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        }
    ]
}

Affected versions

v4.*
v4.2.0
v4.3.0
v4.3.0-rc1
v4.3.0-rc2
v4.3.0-rc3
v4.3.1-rc1
v4.4.0
v4.4.1
v4.4.1-rc1
v4.4.2-rc1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-10684.json"
vanir_signatures 
[
    {
        "deprecated":  false,
        "digest":  {
            "line_hashes":  [
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                "209763767519381559304863455793805713914",
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            ],
            "threshold":  0.9
        },
        "id":  "CVE-2026-10684-8495c7a4",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://github.com/zephyrproject-rtos/zephyr/commit/a9226324e8bd1f8adecafb1b6e0603f781dc750c",
        "target":  {
            "file":  "subsys/debug/coredump/coredump_shell.c"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "133778362332070850882100265892744247887",
            "length":  680
        },
        "id":  "CVE-2026-10684-cb84f4b5",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/zephyrproject-rtos/zephyr/commit/a9226324e8bd1f8adecafb1b6e0603f781dc750c",
        "target":  {
            "file":  "subsys/debug/coredump/coredump_shell.c",
            "function":  "print_coredump_hdr"
        }
    }
]
vanir_signatures_modified 
"2026-10-28T11:04:01Z"