OESA-2026-2943

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Source

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-2943

Import Source

https://repo.openeuler.org/security/data/osv/OESA-2026-2943.json

JSON Data

https://api.osv.dev/v1/vulns/OESA-2026-2943

Upstream

CVE-2026-56123

Published

2026-07-09T12:53:41Z

Modified

2026-07-14T08:15:10.716585972Z

Summary

socat security update

Details

Socat is a relay for bidirectional data transfer between two independent data channels. Each of these data channels may be a file, pipe, device (serial line etc. or a pseudo terminal), a socket (UNIX, IP4, IP6 - raw, UDP, TCP), an SSL socket, proxy CONNECT connection, a file descriptor (stdin etc.), the GNU line editor (readline), a program, or a combination of two of these.

Security Fix(es):

socat versions 1.8.0.0 through 1.8.1.1 contain a heap-based buffer overflow vulnerability that allows a malicious SOCKS5 proxy server to overwrite adjacent heap memory by exploiting a sign-extension flaw in the DOMAINNAME reply parser. During connection setup, the domain name length byte is read through a signed char field causing a negative bytestoread value that is implicitly converted to size_t, resulting in an unbounded heap write into the 262-byte reply buffer with attacker-controlled size and content.(CVE-2026-56123)

Database specific

{
    "severity": "Critical"
}

References

Affected packages

openEuler:24.03-LTS-SP1 / socat

Package

Name: socat
Purl: pkg:rpm/openEuler/socat&distro=openEuler-24.03-LTS-SP1

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.8.1.3-1.oe2403sp1

Ecosystem specific

{
    "x86_64": [
        "socat-1.8.1.3-1.oe2403sp1.x86_64.rpm",
        "socat-debuginfo-1.8.1.3-1.oe2403sp1.x86_64.rpm",
        "socat-debugsource-1.8.1.3-1.oe2403sp1.x86_64.rpm"
    ],
    "src": [
        "socat-1.8.1.3-1.oe2403sp1.src.rpm"
    ],
    "aarch64": [
        "socat-1.8.1.3-1.oe2403sp1.aarch64.rpm",
        "socat-debuginfo-1.8.1.3-1.oe2403sp1.aarch64.rpm",
        "socat-debugsource-1.8.1.3-1.oe2403sp1.aarch64.rpm"
    ],
    "noarch": [
        "socat-help-1.8.1.3-1.oe2403sp1.noarch.rpm"
    ]
}

Database specific

source

"https://repo.openeuler.org/security/data/osv/OESA-2026-2943.json"