Security Bulletin
Summary
Vulnerabilities in openssh, libssh, kernel and gnutls components affect IBM Storage Virtualize products and could cause confidentiality, integrity and availability impacts. CVE-2026-35387 CVE-2026-35414 CVE-2025-5372 CVE-2022-50865 CVE-2025-39971 CVE-2025-14831.
Vulnerability Details
CVEID: CVE-2026-35387
DESCRIPTION: OpenSSH before 10.3 can use unintended ECDSA algorithms. Listing of any ECDSA algorithm in PubkeyAcceptedAlgorithms or HostbasedAcceptedAlgorithms is misinterpreted to mean all ECDSA algorithms.
CWE: CWE-670: Always-Incorrect Control Flow Implementation
CVSS Source: NVD
CVSS Base score: 6.5
CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N)
CVEID: CVE-2026-35414
DESCRIPTION: OpenSSH before 10.3 mishandles the authorized_keys principals option in uncommon scenarios involving a principals list in conjunction with a Certificate Authority that makes certain use of comma characters.
CWE: CWE-670: Always-Incorrect Control Flow Implementation
CVSS Source: NVD
CVSS Base score: 8.1
CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)
CVEID: CVE-2025-5372
DESCRIPTION: A flaw was found in libssh versions built with OpenSSL versions older than 3.0, specifically in the ssh_kdf() function responsible for key derivation. Due to inconsistent interpretation of return values where OpenSSL uses 0 to indicate failure and libssh uses 0 for success—the function may mistakenly return a success status even when key derivation fails. This results in uninitialized cryptographic key buffers being used in subsequent communication, potentially compromising SSH sessions' confidentiality, integrity, and availability.
CWE: CWE-682: Incorrect Calculation
CVSS Source: NVD
CVSS Base score: 8.8
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
CVEID: CVE-2022-50865
DESCRIPTION: In the Linux kernel, the following vulnerability has been resolved:
tcp: fix a signed-integer-overflow bug in tcp_add_backlog()
The type of sk_rcvbuf and sk_sndbuf in struct sock is int, and
in tcp_add_backlog(), the variable limit is caculated by adding
sk_rcvbuf, sk_sndbuf and 64 * 1024, it may exceed the max value
of int and overflow. This patch reduces the limit budget by
halving the sndbuf to solve this issue since ACK packets are much
smaller than the payload.
CVSS Source: Red Hat
CVSS Base score: 7.5
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVEID: CVE-2025-39971
DESCRIPTION: In the Linux kernel, the following vulnerability has been resolved:
i40e: fix idx validation in config queues msg
Ensure idx is within range of active/initialized TCs when iterating over
vf-ch[idx] in i40e_vc_config_queues_msg().
CVSS Source: Red Hat
CVSS Base score: 7.6
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H)
CVEID: CVE-2025-14831
DESCRIPTION: A flaw was found in GnuTLS. This vulnerability allows a denial of service (DoS) by excessive CPU (Central Processing Unit) and memory consumption via specially crafted malicious certificates containing a large number of name constraints and subject alternative names (SANs).
CWE: CWE-407: Inefficient Algorithmic Complexity
CVSS Source: secalert@redhat.com
CVSS Base score: 5.3
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
Affected Products and Versions
| Affected Product(s) | Version(s) |
| IBM Storage Virtualize | 8.4 |
| IBM Storage Virtualize | 8.5 |
| IBM Storage Virtualize | 8.6 |
Remediation/Fixes
IBM recommends that you fix this vulnerability by upgrading affected versions of IBM SAN Volume Controller, IBM Storwize V7000, IBM Storwize V5000, V5100 and V5000E, IBM FlashSystem 5000, 5100, 5200 and 5300, IBM FlashSystem 7200 and 7300, IBM FlashSystem 9100, 9200 and 9500 and IBM Storage Virtualize for Public Cloud to the code levels in the following table or higher using the download links for each product below the table.
| Affected Version(s) | Fixed Version |
| 8.4.0.0-8.4.0.19 | 8.4.0.20 |
| 8.4.1.0, 8.4.2.0-8.4.2.1, 8.4.3.0-8.4.3.1 | 8.5.0.18 |
| 8.5.0.0-8.5.0.17 | 8.5.0.18 |
| 8.5.1.0, 8.5.2.0-8.5.2.3, 8.5.3.0-8.5.3.1, 8.5.4.0 | 8.6.0.11 |
| 8.6.0.0-8.6.0.10 | 8.6.0.11 |
| 8.6.1.0, 8.6.2.0-8.6.2.1, 8.6.3.0 | 8.7.0.0 |
Latest IBM SAN Volume Controller Code
Latest IBM Storwize V7000 Code
Latest IBM Storwize V5000 and V5100 Code
Latest IBM Storwize V5000E Code
Latest IBM FlashSystem 9500 Code
Latest IBM FlashSystem 9100 Family Code
Latest IBM FlashSystem 9200 Code
Latest IBM FlashSystem 7300 Code
Latest IBM FlashSystem 7200 Code
Latest IBM FlashSystem 5000 and 5200 Code
Workarounds and Mitigations
None
Get Notified about Future Security Bulletins
References
Acknowledgement
Change History
21 Jul 2026: Initial Publication
*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.
Disclaimer
According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY. In addition to other efforts to address potential vulnerabilities, IBM periodically updates the record of components contained in our product offerings. As part of that effort, if IBM identifies previously unidentified packages in a product/service inventory, we address relevant vulnerabilities regardless of CVE date. Inclusion of an older CVEID does not demonstrate that the referenced product has been used by IBM since that date, nor that IBM was aware of a vulnerability as of that date. We are making clients aware of relevant vulnerabilities as we become aware of them. "Affected Products and Versions" referenced in IBM Security Bulletins are intended to be only products and versions that are supported by IBM and have not passed their end-of-support or warranty date. Thus, failure to reference unsupported or extended-support products and versions in this Security Bulletin does not constitute a determination by IBM that they are unaffected by the vulnerability. Reference to one or more unsupported versions in this Security Bulletin shall not create an obligation for IBM to provide fixes for any unsupported or extended-support products or versions.
Document Location
Worldwide
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Document Information
Modified date:
21 July 2026
Initial Publish date:
21 July 2026
UID
ibm17280218