OESA-2026-3575

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Source
https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-3575
Import Source
https://repo.openeuler.org/security/data/osv/OESA-2026-3575.json
JSON Data
https://api.osv.dev/v1/vulns/OESA-2026-3575
Upstream
Published
2026-08-30T04:17:56Z
Modified
2026-08-30T04:32:17.192526158Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N CVSS Calculator
Summary
libkcapi security update
Details

The Linux kernel exports a Netlink interface of type AF_ALG to allow user space to utilize the kernel crypto API. libkcapi uses this Netlink interface and exports easy to use APIs so that a developer does not need to consider the low-level Netlink interface handling. The library does not implement any cipher algorithms. All consumer requests are sent to the kernel for processing. Results from the kernel crypto API are returned to the consumer via the library API.

Security Fix(es):

A flaw was found in libkcapi. When performing one-shot symmetric cipher operations on large inputs (over 64 KiB) in stateful modes such as Counter (CTR) or Cipher Block Chaining (CBC), the library improperly reuses the Initialization Vector (IV) for each internal data chunk. A remote attacker could potentially exploit this by making an application that uses libkcapi process specially crafted large inputs. This can lead to a significant weakening of data confidentiality, as the repeated IV use can expose relationships in encrypted plaintext, and may also affect data integrity by causing incorrect cryptographic processing.(CVE-2026-71225)

Database specific 
{
    "severity": "Medium"
}
References

Affected packages

openEuler:20.03-LTS-SP4
libkcapi

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.2.0-11.oe2003sp4

Ecosystem specific 

{
    "x86_64": [
        "libkcapi-1.2.0-11.oe2003sp4.x86_64.rpm",
        "libkcapi-debuginfo-1.2.0-11.oe2003sp4.x86_64.rpm",
        "libkcapi-debugsource-1.2.0-11.oe2003sp4.x86_64.rpm",
        "libkcapi-devel-1.2.0-11.oe2003sp4.x86_64.rpm",
        "libkcapi-tests-1.2.0-11.oe2003sp4.x86_64.rpm"
    ],
    "aarch64": [
        "libkcapi-1.2.0-11.oe2003sp4.aarch64.rpm",
        "libkcapi-debuginfo-1.2.0-11.oe2003sp4.aarch64.rpm",
        "libkcapi-debugsource-1.2.0-11.oe2003sp4.aarch64.rpm",
        "libkcapi-devel-1.2.0-11.oe2003sp4.aarch64.rpm",
        "libkcapi-tests-1.2.0-11.oe2003sp4.aarch64.rpm"
    ],
    "src": [
        "libkcapi-1.2.0-11.oe2003sp4.src.rpm"
    ],
    "noarch": [
        "libkcapi-help-1.2.0-11.oe2003sp4.noarch.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-3575.json"
openEuler:22.03-LTS-SP4
libkcapi

Package

Name
libkcapi
Purl
pkg:rpm/openEuler/libkcapi&distro=openEuler-22.03-LTS-SP4

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.3.1-10.oe2203sp4

Ecosystem specific 

{
    "x86_64": [
        "libkcapi-1.3.1-10.oe2203sp4.x86_64.rpm",
        "libkcapi-debuginfo-1.3.1-10.oe2203sp4.x86_64.rpm",
        "libkcapi-debugsource-1.3.1-10.oe2203sp4.x86_64.rpm",
        "libkcapi-devel-1.3.1-10.oe2203sp4.x86_64.rpm",
        "libkcapi-tests-1.3.1-10.oe2203sp4.x86_64.rpm"
    ],
    "src": [
        "libkcapi-1.3.1-10.oe2203sp4.src.rpm"
    ],
    "aarch64": [
        "libkcapi-1.3.1-10.oe2203sp4.aarch64.rpm",
        "libkcapi-debuginfo-1.3.1-10.oe2203sp4.aarch64.rpm",
        "libkcapi-debugsource-1.3.1-10.oe2203sp4.aarch64.rpm",
        "libkcapi-devel-1.3.1-10.oe2203sp4.aarch64.rpm",
        "libkcapi-tests-1.3.1-10.oe2203sp4.aarch64.rpm"
    ],
    "noarch": [
        "libkcapi-help-1.3.1-10.oe2203sp4.noarch.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-3575.json"
openEuler:24.03-LTS-SP1
libkcapi

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.4.0-11.oe2403sp1

Ecosystem specific 

{
    "x86_64": [
        "libkcapi-1.4.0-11.oe2403sp1.x86_64.rpm",
        "libkcapi-debuginfo-1.4.0-11.oe2403sp1.x86_64.rpm",
        "libkcapi-debugsource-1.4.0-11.oe2403sp1.x86_64.rpm",
        "libkcapi-devel-1.4.0-11.oe2403sp1.x86_64.rpm",
        "libkcapi-tests-1.4.0-11.oe2403sp1.x86_64.rpm"
    ],
    "aarch64": [
        "libkcapi-1.4.0-11.oe2403sp1.aarch64.rpm",
        "libkcapi-debuginfo-1.4.0-11.oe2403sp1.aarch64.rpm",
        "libkcapi-debugsource-1.4.0-11.oe2403sp1.aarch64.rpm",
        "libkcapi-devel-1.4.0-11.oe2403sp1.aarch64.rpm",
        "libkcapi-tests-1.4.0-11.oe2403sp1.aarch64.rpm"
    ],
    "src": [
        "libkcapi-1.4.0-11.oe2403sp1.src.rpm"
    ],
    "noarch": [
        "libkcapi-help-1.4.0-11.oe2403sp1.noarch.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-3575.json"
openEuler:24.03-LTS-SP3
libkcapi

Package

Name
libkcapi
Purl
pkg:rpm/openEuler/libkcapi&distro=openEuler-24.03-LTS-SP3

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.4.0-11.oe2403sp3

Ecosystem specific 

{
    "x86_64": [
        "libkcapi-1.4.0-11.oe2403sp3.x86_64.rpm",
        "libkcapi-debuginfo-1.4.0-11.oe2403sp3.x86_64.rpm",
        "libkcapi-debugsource-1.4.0-11.oe2403sp3.x86_64.rpm",
        "libkcapi-devel-1.4.0-11.oe2403sp3.x86_64.rpm",
        "libkcapi-tests-1.4.0-11.oe2403sp3.x86_64.rpm"
    ],
    "aarch64": [
        "libkcapi-1.4.0-11.oe2403sp3.aarch64.rpm",
        "libkcapi-debuginfo-1.4.0-11.oe2403sp3.aarch64.rpm",
        "libkcapi-debugsource-1.4.0-11.oe2403sp3.aarch64.rpm",
        "libkcapi-devel-1.4.0-11.oe2403sp3.aarch64.rpm",
        "libkcapi-tests-1.4.0-11.oe2403sp3.aarch64.rpm"
    ],
    "src": [
        "libkcapi-1.4.0-11.oe2403sp3.src.rpm"
    ],
    "noarch": [
        "libkcapi-help-1.4.0-11.oe2403sp3.noarch.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-3575.json"
openEuler:24.03-LTS-SP4
libkcapi

Package

Name
libkcapi
Purl
pkg:rpm/openEuler/libkcapi&distro=openEuler-24.03-LTS-SP4

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.4.0-11.oe2403sp4

Ecosystem specific 

{
    "x86_64": [
        "libkcapi-1.4.0-11.oe2403sp4.x86_64.rpm",
        "libkcapi-debuginfo-1.4.0-11.oe2403sp4.x86_64.rpm",
        "libkcapi-debugsource-1.4.0-11.oe2403sp4.x86_64.rpm",
        "libkcapi-devel-1.4.0-11.oe2403sp4.x86_64.rpm",
        "libkcapi-tests-1.4.0-11.oe2403sp4.x86_64.rpm"
    ],
    "src": [
        "libkcapi-1.4.0-11.oe2403sp4.src.rpm"
    ],
    "aarch64": [
        "libkcapi-1.4.0-11.oe2403sp4.aarch64.rpm",
        "libkcapi-debuginfo-1.4.0-11.oe2403sp4.aarch64.rpm",
        "libkcapi-debugsource-1.4.0-11.oe2403sp4.aarch64.rpm",
        "libkcapi-devel-1.4.0-11.oe2403sp4.aarch64.rpm",
        "libkcapi-tests-1.4.0-11.oe2403sp4.aarch64.rpm"
    ],
    "noarch": [
        "libkcapi-help-1.4.0-11.oe2403sp4.noarch.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-3575.json"