CVE-2026-55995

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Source
https://cve.org/CVERecord?id=CVE-2026-55995
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-55995.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-55995
Downstream
AZL (1)
DEBIAN (1)
OESA (6)
openSUSE (1)
RHSA (10)
RLSA (3)
UBUNTU (1)
Related
ALSA (3)
openSUSE (1)
Published
2026-07-29T13:43:22Z
Modified
2026-08-18T17:56:02Z
Severity
  • 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
Double-free in the iSNS attribute decoder in open-iscsi
Details

A Double Free vulnerability in open-iscsi allows an unauthenticated MITM attacker to cause DoS.

This issue affects open-iscsi: from ? through 56718d4e9d1a4f51c30697b5c0534144bb41c9bb.

Database specific 
{
    "cna_assigner":  "suse",
    "cwe_ids":  [
        "CWE-415"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55995.json",
    "unresolved_ranges":  [
        {
            "extracted_events":  [
                {
                    "introduced":  "?"
                },
                {
                    "last_affected":  "56718d4e9d1a4f51c30697b5c0534144bb41c9bb"
                }
            ],
            "source":  "AFFECTED_FIELD"
        },
        {
            "extracted_events":  [
                {
                    "fixed":  "56718d4e9d1a4f51c30697b5c0534144bb41c9bb"
                }
            ],
            "source":  "DESCRIPTION"
        }
    ]
}
References

Affected packages

Git / github.com/open-iscsi/open-isns

Affected ranges

Type
GIT
Repo
https://github.com/open-iscsi/open-isns
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
56718d4e9d1a4f51c30697b5c0534144bb41c9bb
Database specific
Show details 
{
    "source":  "REFERENCES"
}

Affected versions

0.*
0.93
0.94
v0.*
v0.100
v0.101
v0.102
v0.103
v0.95
v0.96
v0.97
v0.98
v0.99

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-55995.json"
vanir_signatures 
[
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "337867204291146219561419854160646465349",
            "length":  303
        },
        "id":  "CVE-2026-55995-7773c508",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/open-iscsi/open-isns/commit/56718d4e9d1a4f51c30697b5c0534144bb41c9bb",
        "target":  {
            "file":  "attrs.c",
            "function":  "isns_attr_type_string_decode"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "line_hashes":  [
                "181126839560022463853108834279627390706",
                "304264647059442217795861489413632424515",
                "250301943756102260998790019448753689926",
                "279543066480442551210706216074594830461",
                "50594748883323216881980245488699532925",
                "21998209129362232810779321708037676276",
                "176450201884117127306581837101829464371",
                "65418128116049271165254075583321570180"
            ],
            "threshold":  0.9
        },
        "id":  "CVE-2026-55995-b03e2d8c",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://github.com/open-iscsi/open-isns/commit/56718d4e9d1a4f51c30697b5c0534144bb41c9bb",
        "target":  {
            "file":  "attrs.c"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "326105002302471803800672137860604776505",
            "length":  287
        },
        "id":  "CVE-2026-55995-e150ede7",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/open-iscsi/open-isns/commit/56718d4e9d1a4f51c30697b5c0534144bb41c9bb",
        "target":  {
            "file":  "attrs.c",
            "function":  "isns_attr_type_opaque_decode"
        }
    }
]
vanir_signatures_modified 
"2026-08-18T17:56:02Z"