CVE-2025-68160

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Source
https://cve.org/CVERecord?id=CVE-2025-68160
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-68160.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-68160
Downstream
ALPINE (1)
AZL (5)
BELL (1)
CGA (12)
DEBIAN (1)
ECHO (1)
JLSEC (1)
MGASA (1)
MINI (3)
OESA (15)
openSUSE (2)
RHSA (3)
RLSA (2)
SUSE (17)
UBUNTU (1)
Related
ALSA (2)
openSUSE (2)
SUSE (17)
Published
2026-01-27T16:01:23Z
Modified
2026-10-22T16:10:09Z
Severity
  • 4.7 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Heap out-of-bounds write in BIO_f_linebuffer on short writes
Details

Issue summary: Writing large, newline-free data into a BIO chain using the line-buffering filter where the next BIO performs short writes can trigger a heap-based out-of-bounds write.

Impact summary: This out-of-bounds write can cause memory corruption which typically results in a crash, leading to Denial of Service for an application.

The line-buffering BIO filter (BIO_f_linebuffer) is not used by default in TLS/SSL data paths. In OpenSSL command-line applications, it is typically only pushed onto stdout/stderr on VMS systems. Third-party applications that explicitly use this filter with a BIO chain that can short-write and that write large, newline-free data influenced by an attacker would be affected. However, the circumstances where this could happen are unlikely to be under attacker control, and BIO_f_linebuffer is unlikely to be handling non-curated data controlled by an attacker. For that reason the issue was assessed as Low severity.

The FIPS modules in 3.6, 3.5, 3.4, 3.3 and 3.0 are not affected by this issue, as the BIO implementation is outside the OpenSSL FIPS module boundary.

OpenSSL 3.6, 3.5, 3.4, 3.3, 3.0, 1.1.1 and 1.0.2 are vulnerable to this issue.

Database specific 
{
    "cna_assigner": "openssl",
    "cwe_ids": [
        "CWE-787"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/68xxx/CVE-2025-68160.json"
}
References

Affected packages

Git / github.com/openssl/openssl

Affected ranges

Type
GIT
Repo
https://github.com/openssl/openssl
Events
Introduced
e818b74be2170fbe957a07b0da4401c2b694b3b8
Fixed
e818b74be2170fbe957a07b0da4401c2b694b3b8
Introduced
e04bd3433fd84e1861bf258ea37928d9845e6a86
Fixed
e04bd3433fd84e1861bf258ea37928d9845e6a86
Introduced
89cd17a031e022211684eb7eb41190cf1910f9fa
Fixed
a22063cd69a077cc68bb4c10e9f351f75899b194
Introduced
4cb31128b5790819dfeea2739fbde265f71a10a2
Fixed
4601ff25acd6c2fe58a8bfe241e6c470e27b8074
Introduced
98acb6b02839c609ef5b837794e08d906d965335
Fixed
565bdcc41bbf89fcbaf962636469332689f0c9fd
Introduced
636dfadc70ce26f2473870570bfd9ec352806b1d
Fixed
67b5686b4419b4cb8caa502711c41815f5279751
Introduced
7b371d80d959ec9ab4139d09d78e83c090de9779
Fixed
c9a9e5b10105ad850b6e4d1122c645c67767c341
Fixed
384011202af92605d926fafe4a0bcd6b65d162ad
Fixed
475c466ef2fbd8fc1df6fae1c3eed9c813fc8ff6
Fixed
4c96fbba618e1940f038012506ee9e21d32ee12c
Fixed
6845c3b6460a98b1ec4e463baa2ea1a63a32d7c0
Fixed
68a7cd2e2816c3a02f4d45a2ce43fc04fac97096
Database specific
Show details 
{
    "extracted_events": [
        {
            "cpe": "cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*",
            "range": [
                {
                    "introduced": "1.0.2"
                },
                {
                    "fixed": "1.0.2zn"
                }
            ],
            "source": "CPE_RANGE"
        },
        {
            "cpe": "cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*",
            "range": [
                {
                    "introduced": "1.1.1"
                },
                {
                    "fixed": "1.1.1ze"
                }
            ],
            "source": "CPE_RANGE"
        },
        {
            "cpe": "cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*",
            "range": [
                {
                    "introduced": "3.0.0"
                },
                {
                    "fixed": "3.0.19"
                }
            ],
            "source": "CPE_RANGE"
        },
        {
            "cpe": "cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*",
            "range": [
                {
                    "introduced": "3.3.0"
                },
                {
                    "fixed": "3.3.6"
                }
            ],
            "source": "CPE_RANGE"
        },
        {
            "cpe": "cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*",
            "range": [
                {
                    "introduced": "3.4.0"
                },
                {
                    "fixed": "3.4.4"
                }
            ],
            "source": "CPE_RANGE"
        },
        {
            "cpe": "cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*",
            "range": [
                {
                    "introduced": "3.5.0"
                },
                {
                    "fixed": "3.5.5"
                }
            ],
            "source": "CPE_RANGE"
        },
        {
            "cpe": "cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*",
            "range": [
                {
                    "introduced": "3.6.0"
                },
                {
                    "fixed": "3.6.1"
                }
            ],
            "source": "CPE_RANGE"
        },
        {
            "range": [
                {
                    "fixed": "384011202af92605d926fafe4a0bcd6b65d162ad"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "range": [
                {
                    "fixed": "475c466ef2fbd8fc1df6fae1c3eed9c813fc8ff6"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "range": [
                {
                    "fixed": "4c96fbba618e1940f038012506ee9e21d32ee12c"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "range": [
                {
                    "fixed": "6845c3b6460a98b1ec4e463baa2ea1a63a32d7c0"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "range": [
                {
                    "fixed": "68a7cd2e2816c3a02f4d45a2ce43fc04fac97096"
                }
            ],
            "source": "REFERENCES_COMMIT"
        }
    ]
}

Affected versions

3.*
3.0-POST-CLANG-FORMAT-WEBKIT
3.0-PRE-CLANG-FORMAT-WEBKIT
3.3-POST-CLANG-FORMAT-WEBKIT
3.3-PRE-CLANG-FORMAT-WEBKIT
3.4-POST-CLANG-FORMAT-WEBKIT
3.4-PRE-CLANG-FORMAT-WEBKIT
3.5-POST-CLANG-FORMAT-WEBKIT
3.5-PRE-CLANG-FORMAT-WEBKIT
3.6-POST-CLANG-FORMAT-WEBKIT
3.6-PRE-CLANG-FORMAT-WEBKIT
openssl-3.*
openssl-3.0.0
openssl-3.0.1
openssl-3.0.10
openssl-3.0.11
openssl-3.0.12
openssl-3.0.13
openssl-3.0.14
openssl-3.0.15
openssl-3.0.16
openssl-3.0.17
openssl-3.0.18
openssl-3.0.2
openssl-3.0.3
openssl-3.0.4
openssl-3.0.5
openssl-3.0.6
openssl-3.0.7
openssl-3.0.8
openssl-3.0.9
openssl-3.3.0
openssl-3.3.1
openssl-3.3.2
openssl-3.3.3
openssl-3.3.4
openssl-3.3.5
openssl-3.4.0
openssl-3.4.1
openssl-3.4.2
openssl-3.4.3
openssl-3.5.0
openssl-3.5.1
openssl-3.5.2
openssl-3.5.3
openssl-3.5.4
openssl-3.6.0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-68160.json"
vanir_signatures 
[
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "326706324675548840343059491432175579308",
                "114844763854417187951168206090197510366",
                "167345785719281904993519213285676239194",
                "257263426464193822686404804161157532412",
                "50859066439319194516902197275909064518",
                "18456403878150118977756109076675068777",
                "52375315159804342268105767276256543041",
                "58506114754643604034222004329137803376"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2025-68160-11f3e179",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/openssl/openssl/commit/475c466ef2fbd8fc1df6fae1c3eed9c813fc8ff6",
        "target": {
            "file": "crypto/bio/bf_lbuf.c"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "326706324675548840343059491432175579308",
                "114844763854417187951168206090197510366",
                "167345785719281904993519213285676239194",
                "257263426464193822686404804161157532412",
                "50859066439319194516902197275909064518",
                "18456403878150118977756109076675068777",
                "52375315159804342268105767276256543041",
                "58506114754643604034222004329137803376"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2025-68160-193f929b",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/openssl/openssl/commit/6845c3b6460a98b1ec4e463baa2ea1a63a32d7c0",
        "target": {
            "file": "crypto/bio/bf_lbuf.c"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "function_hash": "91143076051739638548163354092603980205",
            "length": 1836
        },
        "id": "CVE-2025-68160-371c2c54",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/openssl/openssl/commit/384011202af92605d926fafe4a0bcd6b65d162ad",
        "target": {
            "file": "crypto/bio/bf_lbuf.c",
            "function": "linebuffer_write"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "326706324675548840343059491432175579308",
                "114844763854417187951168206090197510366",
                "167345785719281904993519213285676239194",
                "257263426464193822686404804161157532412",
                "50859066439319194516902197275909064518",
                "18456403878150118977756109076675068777",
                "52375315159804342268105767276256543041",
                "58506114754643604034222004329137803376"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2025-68160-5f322883",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/openssl/openssl/commit/384011202af92605d926fafe4a0bcd6b65d162ad",
        "target": {
            "file": "crypto/bio/bf_lbuf.c"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "function_hash": "91143076051739638548163354092603980205",
            "length": 1836
        },
        "id": "CVE-2025-68160-6544ee0a",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/openssl/openssl/commit/475c466ef2fbd8fc1df6fae1c3eed9c813fc8ff6",
        "target": {
            "file": "crypto/bio/bf_lbuf.c",
            "function": "linebuffer_write"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "326706324675548840343059491432175579308",
                "114844763854417187951168206090197510366",
                "167345785719281904993519213285676239194",
                "257263426464193822686404804161157532412",
                "50859066439319194516902197275909064518",
                "18456403878150118977756109076675068777",
                "52375315159804342268105767276256543041",
                "58506114754643604034222004329137803376"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2025-68160-6dcc1b10",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/openssl/openssl/commit/4c96fbba618e1940f038012506ee9e21d32ee12c",
        "target": {
            "file": "crypto/bio/bf_lbuf.c"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "28170854778703993674264004058177114599",
                "73132526844288570625317440636111911761",
                "177405411499435185068645597737938634778",
                "224809958623850711330610094965797758930",
                "295554444428855106393106961197201359586"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2025-68160-c377fa22",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/openssl/openssl/commit/e04bd3433fd84e1861bf258ea37928d9845e6a86",
        "target": {
            "file": "include/openssl/opensslv.h"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "function_hash": "177227187165901619068025629445574661809",
            "length": 1842
        },
        "id": "CVE-2025-68160-cd92b258",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/openssl/openssl/commit/4c96fbba618e1940f038012506ee9e21d32ee12c",
        "target": {
            "file": "crypto/bio/bf_lbuf.c",
            "function": "linebuffer_write"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "function_hash": "91143076051739638548163354092603980205",
            "length": 1836
        },
        "id": "CVE-2025-68160-d2ec84eb",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/openssl/openssl/commit/6845c3b6460a98b1ec4e463baa2ea1a63a32d7c0",
        "target": {
            "file": "crypto/bio/bf_lbuf.c",
            "function": "linebuffer_write"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "326706324675548840343059491432175579308",
                "114844763854417187951168206090197510366",
                "167345785719281904993519213285676239194",
                "257263426464193822686404804161157532412",
                "50859066439319194516902197275909064518",
                "18456403878150118977756109076675068777",
                "52375315159804342268105767276256543041",
                "58506114754643604034222004329137803376"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2025-68160-d7ed1c09",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/openssl/openssl/commit/68a7cd2e2816c3a02f4d45a2ce43fc04fac97096",
        "target": {
            "file": "crypto/bio/bf_lbuf.c"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "function_hash": "91143076051739638548163354092603980205",
            "length": 1836
        },
        "id": "CVE-2025-68160-ddc49f75",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/openssl/openssl/commit/68a7cd2e2816c3a02f4d45a2ce43fc04fac97096",
        "target": {
            "file": "crypto/bio/bf_lbuf.c",
            "function": "linebuffer_write"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "251633914150035957322733061977107206211",
                "338514574181828579838011565939158652696",
                "76638288692106140328510055542557597351",
                "142922657400765574308962710386922248045",
                "71649992455794854055653842592139575350",
                "65527166711110472566013424527579064967",
                "253196866009476977787139000804413898733",
                "172177136897997206866313011107384691461"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2025-68160-e051451f",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/openssl/openssl/commit/e818b74be2170fbe957a07b0da4401c2b694b3b8",
        "target": {
            "file": "crypto/opensslv.h"
        }
    }
]
vanir_signatures_modified 
"2026-10-22T16:10:09Z"