CVE-2026-53615

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Source
https://cve.org/CVERecord?id=CVE-2026-53615
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-53615.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-53615
Aliases
  • GHSA-h4rw-gv36-wmp5
Downstream
AZL (1)
BELL (1)
DEBIAN (1)
ECHO (1)
ROOT (3)
UBUNTU (1)
Published
2026-10-14T15:56:45Z
Modified
2026-10-24T07:14:23Z
Severity
  • 8.0 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H CVSS Calculator
Summary
util-linux libblkid DOS extended-partition overflow produces invalid partition metadata
Details

util-linux is a random collection of Linux utilities. Before util-linux 2.41.4, parse_dos_extended() in libblkid/src/partitions/dos.c computes an extended-partition start sector with 32-bit addition and does not apply the extended-area bounds checks to the first two EBR entries. A local attacker who causes a crafted DOS extended-partition disk image or removable medium to be probed can wrap cur_start + start to sector zero and cause libblkid to report a false partition overlapping the MBR. This directly compromises the integrity of the reported partition metadata; disk modification or availability loss requires a separate downstream consumer to act on that metadata. This issue is fixed in 2.41.4.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-190"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53615.json"
}
References

Affected packages

Git / github.com/util-linux/util-linux

Affected ranges

Type
GIT
Repo
https://github.com/util-linux/util-linux
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
e147e16fa9a9d3b3ad5968bf42280966ac3a8529
Fixed
05c2dbadf34cc74192287f377904afaaf4061623
Fixed
a2d858176b609ab5b8535021a3af9cd302d23d31
Fixed
e9d544d013267ea86b70ee8ff78abd280e6641af
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "2.41.4"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
        },
        {
            "range": [
                {
                    "fixed": "05c2dbadf34cc74192287f377904afaaf4061623"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "range": [
                {
                    "fixed": "a2d858176b609ab5b8535021a3af9cd302d23d31"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "range": [
                {
                    "fixed": "e9d544d013267ea86b70ee8ff78abd280e6641af"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "original_tag": "v2.41.4",
            "range": [
                {
                    "fixed": "e147e16fa9a9d3b3ad5968bf42280966ac3a8529"
                }
            ],
            "source": "REFERENCES_TAG"
        }
    ]
}

Affected versions

v2.*
v2.10f
v2.10m
v2.10s
v2.11b
v2.11f
v2.11m
v2.11n
v2.11o
v2.11q
v2.11r
v2.11t
v2.11u
v2.11v
v2.11w
v2.11x
v2.11y
v2.12
v2.12a
v2.12b
v2.12d
v2.12h
v2.12i
v2.12j
v2.12k
v2.12l
v2.12m
v2.12o
v2.12p
v2.12pre
v2.12q
v2.12q-pre1
v2.12q-pre2
v2.12r
v2.12r-pre1
v2.13
v2.13-pre1
v2.13-pre2
v2.13-pre3
v2.13-pre4
v2.13-pre5
v2.13-pre6
v2.13-pre7
v2.13-rc1
v2.13-rc2
v2.13-rc3
v2.14
v2.14-rc1
v2.14-rc2
v2.14-rc3
v2.15
v2.15-rc1
v2.15-rc2
v2.16
v2.16-rc1
v2.16-rc2
v2.17
v2.17-rc1
v2.17-rc2
v2.17-rc3
v2.18
v2.18-rc1
v2.18-rc2
v2.19
v2.19-rc1
v2.19-rc2
v2.19-rc3
v2.2
v2.20
v2.20-rc1
v2.20-rc2
v2.21
v2.21-rc1
v2.21-rc2
v2.22
v2.22-rc1
v2.22-rc2
v2.23
v2.23-rc1
v2.23-rc2
v2.24
v2.24-rc1
v2.24-rc2
v2.25
v2.25-rc1
v2.25-rc2
v2.26
v2.26-rc1
v2.26-rc2
v2.27
v2.27-rc1
v2.27-rc2
v2.28
v2.28-rc1
v2.28-rc2
v2.29
v2.29-rc1
v2.29-rc2
v2.30
v2.30-rc1
v2.30-rc2
v2.31
v2.31-rc1
v2.31-rc2
v2.32
v2.32-rc1
v2.32-rc2
v2.33
v2.33-rc1
v2.33-rc2
v2.34
v2.34-rc1
v2.34-rc2
v2.35
v2.35-rc1
v2.35-rc2
v2.36
v2.36-rc1
v2.36-rc2
v2.37
v2.37-rc1
v2.37-rc2
v2.38
v2.38-rc1
v2.38-rc2
v2.38-rc3
v2.38-rc4
v2.39
v2.39-rc1
v2.39-rc2
v2.39-rc3
v2.40-rc1
v2.41
v2.41-devel
v2.41-rc1
v2.41-rc2
v2.41-start
v2.41.1
v2.41.2
v2.41.2-rc1
v2.41.3
v2.42-rc1
v2.42-rc2
v2.42-start
v2.43-devel
v2.5
v2.7.1
v2.8
v2.9i
v2.9v

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-53615.json"
vanir_signatures 
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            ],
            "threshold": 0.9
        },
        "id": "CVE-2026-53615-10686ef2",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/util-linux/util-linux/commit/a2d858176b609ab5b8535021a3af9cd302d23d31",
        "target": {
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    {
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            "threshold": 0.9
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        "id": "CVE-2026-53615-36be42df",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/util-linux/util-linux/commit/e9d544d013267ea86b70ee8ff78abd280e6641af",
        "target": {
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    {
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            ],
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        },
        "id": "CVE-2026-53615-5debb2bb",
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    {
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    {
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        "target": {
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        }
    }
]
vanir_signatures_modified 
"2026-10-24T07:14:23Z"