OESA-2026-3017

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Source

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-3017

Import Source

https://repo.openeuler.org/security/data/osv/OESA-2026-3017.json

JSON Data

https://api.osv.dev/v1/vulns/OESA-2026-3017

Upstream

CVE-2025-15661

Published

2026-07-19T03:47:50Z

Modified

2026-07-19T04:00:14.275738499Z

Summary

libssh2 security update

Details

libssh2 is a library implementing the SSH2 protocol as defined by Internet Drafts: SECSH-TRANS(22), SECSH-USERAUTH(25), SECSH-CONNECTION(23), SECSH-ARCH(20), SECSH-FILEXFER(06)*, SECSH-DHGEX(04), and SECSH-NUMBERS(10).

Security Fix(es):

libssh2 through 1.11.1, fixed in commit 2dae302, contains an out-of-bounds heap read vulnerability in the sftpsymlink() function in src/sftp.c that allows a malicious SSH server or man-in-the-middle attacker to disclose heap memory contents or cause a crash by sending a crafted SSHFXPNAME response. Attackers can supply a linklen value larger than the actual packet data in SSHFXPNAME responses for SFTP READLINK and REALPATH operations, triggering a heap buffer over-read of up to target_len minus one bytes due to the missing validation of available packet buffer size before the memcpy operation.(CVE-2025-15661)

Database specific

{
    "severity": "Medium"
}

References

Affected packages

openEuler:20.03-LTS-SP4 / libssh2

Package

Name: libssh2
Purl: pkg:rpm/openEuler/libssh2&distro=openEuler-20.03-LTS-SP4

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.9.0-12.oe2003sp4

Ecosystem specific

{
    "x86_64": [
        "libssh2-1.9.0-12.oe2003sp4.x86_64.rpm",
        "libssh2-debuginfo-1.9.0-12.oe2003sp4.x86_64.rpm",
        "libssh2-debugsource-1.9.0-12.oe2003sp4.x86_64.rpm",
        "libssh2-devel-1.9.0-12.oe2003sp4.x86_64.rpm"
    ],
    "aarch64": [
        "libssh2-1.9.0-12.oe2003sp4.aarch64.rpm",
        "libssh2-debuginfo-1.9.0-12.oe2003sp4.aarch64.rpm",
        "libssh2-debugsource-1.9.0-12.oe2003sp4.aarch64.rpm",
        "libssh2-devel-1.9.0-12.oe2003sp4.aarch64.rpm"
    ],
    "noarch": [
        "libssh2-help-1.9.0-12.oe2003sp4.noarch.rpm"
    ],
    "src": [
        "libssh2-1.9.0-12.oe2003sp4.src.rpm"
    ]
}

Database specific

source

"https://repo.openeuler.org/security/data/osv/OESA-2026-3017.json"