Memory Corruption via Uncanceled AIO Requests on Error: libkcapi's one-shot AIO path can return an error before all submitted IOCBs are drained, allowing later kernel writes into caller-owned output buffers.

The remote MiracleLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2026-1845:02 advisory.

    * libkcapi: IV reuse in libkcapi one-shot symmetric cipher chunking causes cipher state reset across chunk     boundaries (CVE-2026-71225)
      * libkcapi: Memory corruption via uncanceled AIO requests on error in libkcapi's one-shot AIO path     (CVE-2026-71226)
      * libkcapi: Infinite loop denial of service in libkcapi _kcapi_aio_read_all() due to unhandled     io_getevents() timeout return (CVE-2026-71227)     Bug Fix(es) and Enhancement(s):
      * libkcapi: AEAD Decrypt Auth Check Skipped for Zero-Length Input in `kcapi-enc` [rhel-9.8.z]     (JIRA:RHEL-242667)

Tenable has extracted the preceding description block directly from the MiracleLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:67265 advisory.

    * libkcapi: IV reuse in libkcapi one-shot symmetric cipher chunking causes cipher state reset across chunk     boundaries (CVE-2026-71225)

    * libkcapi: Memory corruption via uncanceled AIO requests on error in libkcapi's one-shot AIO path     (CVE-2026-71226)

    * libkcapi: Infinite loop denial of service in libkcapi _kcapi_aio_read_all() due to unhandled     io_getevents() timeout return (CVE-2026-71227)

    Bug Fix(es) and Enhancement(s):

    * libkcapi: AEAD Decrypt Auth Check Skipped for Zero-Length Input in `kcapi-enc` [rhel-9.8.z] (JIRA:Rocky     Linux-242667)

Tenable has extracted the preceding description block directly from the RockyLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-672670 advisory.

    [1.5.1-1.0.1]
    - Change distroname_ext in spec file to oracle

    [1.5.1-1]
    - Rebase to 1.5.1

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-672650 advisory.

    - CVE-2026-71226: Fix memory corruption via uncanceled AIO requests       on error in libkcapi's one-shot AIO path       Resolves: RHEL-224815
    - CVE-2026-71227: Fix infinite loop denial of service in libkcapi
      _kcapi_aio_read_all() due to unhandled io_getevents() timeout return       Resolves: RHEL-224976

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-672660 advisory.

    - CVE-2026-71226: Fix memory corruption via uncanceled AIO requests       on error in libkcapi's one-shot AIO path       Resolves: RHEL-224809
    - CVE-2026-71227: Fix infinite loop denial of service in libkcapi
      _kcapi_aio_read_all() due to unhandled io_getevents() timeout return       Resolves: RHEL-224975

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:67265 advisory.

    * libkcapi: IV reuse in libkcapi one-shot symmetric cipher chunking causes cipher state reset across chunk     boundaries (CVE-2026-71225)
      * libkcapi: Memory corruption via uncanceled AIO requests on error in libkcapi's one-shot AIO path     (CVE-2026-71226)
      * libkcapi: Infinite loop denial of service in libkcapi _kcapi_aio_read_all() due to unhandled     io_getevents() timeout return (CVE-2026-71227)


    Bug Fix(es) and Enhancement(s):

      * libkcapi: AEAD Decrypt Auth Check Skipped for Zero-Length Input in `kcapi-enc` [almalinux-9.8.z]     (JIRA:AlmaLinux-242667)

Tenable has extracted the preceding description block directly from the AlmaLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote RockyLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:67267 advisory.

    * libkcapi: IV reuse in libkcapi one-shot symmetric cipher chunking causes cipher state reset across chunk     boundaries (CVE-2026-71225)

    * libkcapi: Memory corruption via uncanceled AIO requests on error in libkcapi's one-shot AIO path     (CVE-2026-71226)

    * libkcapi: Infinite loop denial of service in libkcapi _kcapi_aio_read_all() due to unhandled     io_getevents() timeout return (CVE-2026-71227)

    Bug Fix(es) and Enhancement(s):

    * libkcapi: rebase to 1.5.1 [rhel-10.2.z] (JIRA:Rocky Linux-242508)

    * libkcapi: AEAD Decrypt Auth Check Skipped for Zero-Length Input in `kcapi-enc` [rhel-10.2.z] (JIRA:Rocky     Linux-242665)

Tenable has extracted the preceding description block directly from the RockyLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote MiracleLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2026-1835:01 advisory.

    * libkcapi: IV reuse in libkcapi one-shot symmetric cipher chunking causes cipher state reset across chunk     boundaries (CVE-2026-71225)
      * libkcapi: Memory corruption via uncanceled AIO requests on error in libkcapi's one-shot AIO path     (CVE-2026-71226)
      * libkcapi: Infinite loop denial of service in libkcapi _kcapi_aio_read_all() due to unhandled     io_getevents() timeout return (CVE-2026-71227)

Tenable has extracted the preceding description block directly from the MiracleLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote RockyLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:67266 advisory.

    * libkcapi: IV reuse in libkcapi one-shot symmetric cipher chunking causes cipher state reset across chunk     boundaries (CVE-2026-71225)

    * libkcapi: Memory corruption via uncanceled AIO requests on error in libkcapi's one-shot AIO path     (CVE-2026-71226)

    * libkcapi: Infinite loop denial of service in libkcapi _kcapi_aio_read_all() due to unhandled     io_getevents() timeout return (CVE-2026-71227)

Tenable has extracted the preceding description block directly from the RockyLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote AlmaLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:67267 advisory.

    * libkcapi: IV reuse in libkcapi one-shot symmetric cipher chunking causes cipher state reset across chunk     boundaries (CVE-2026-71225)
      * libkcapi: Memory corruption via uncanceled AIO requests on error in libkcapi's one-shot AIO path     (CVE-2026-71226)
      * libkcapi: Infinite loop denial of service in libkcapi _kcapi_aio_read_all() due to unhandled     io_getevents() timeout return (CVE-2026-71227)


    Bug Fix(es) and Enhancement(s):

      * libkcapi: rebase to 1.5.1 [almalinux-10.2.z] (JIRA:AlmaLinux-242508)
      * libkcapi: AEAD Decrypt Auth Check Skipped for Zero-Length Input in `kcapi-enc` [almalinux-10.2.z]     (JIRA:AlmaLinux-242665)

Tenable has extracted the preceding description block directly from the AlmaLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:67266 advisory.

    * libkcapi: IV reuse in libkcapi one-shot symmetric cipher chunking causes cipher state reset across chunk     boundaries (CVE-2026-71225)
      * libkcapi: Memory corruption via uncanceled AIO requests on error in libkcapi's one-shot AIO path     (CVE-2026-71226)
      * libkcapi: Infinite loop denial of service in libkcapi _kcapi_aio_read_all() due to unhandled     io_getevents() timeout return (CVE-2026-71227)

Tenable has extracted the preceding description block directly from the AlmaLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:67267 advisory.

    libkcapi allows user-space to access the Linux kernel crypto API.  This library uses the 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.  The kernel interface and therefore this library can be used by unprivileged processes.

    Security Fix(es):

    * libkcapi: IV reuse in libkcapi one-shot symmetric cipher chunking causes cipher state reset across chunk     boundaries (CVE-2026-71225)

    * libkcapi: Memory corruption via uncanceled AIO requests on error in libkcapi's one-shot AIO path     (CVE-2026-71226)

    * libkcapi: Infinite loop denial of service in libkcapi _kcapi_aio_read_all() due to unhandled     io_getevents() timeout return (CVE-2026-71227)

    Bug Fix(es) and Enhancement(s):

    * libkcapi: rebase to 1.5.1 [rhel-10.2.z] (JIRA:RHEL-242508)

    * libkcapi: AEAD Decrypt Auth Check Skipped for Zero-Length Input in `kcapi-enc` [rhel-10.2.z]     (JIRA:RHEL-242665)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:67265 advisory.

    libkcapi allows user-space to access the Linux kernel crypto API.  This library uses the 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.  The kernel interface and therefore this library can be used by unprivileged processes.

    Security Fix(es):

    * libkcapi: IV reuse in libkcapi one-shot symmetric cipher chunking causes cipher state reset across chunk     boundaries (CVE-2026-71225)

    * libkcapi: Memory corruption via uncanceled AIO requests on error in libkcapi's one-shot AIO path     (CVE-2026-71226)

    * libkcapi: Infinite loop denial of service in libkcapi _kcapi_aio_read_all() due to unhandled     io_getevents() timeout return (CVE-2026-71227)

    Bug Fix(es) and Enhancement(s):

    * libkcapi: AEAD Decrypt Auth Check Skipped for Zero-Length Input in `kcapi-enc` [rhel-9.8.z]     (JIRA:RHEL-242667)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:67266 advisory.

    libkcapi allows user-space to access the Linux kernel crypto API.  This library uses the 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.  The kernel interface and therefore this library can be used by unprivileged processes.

    Security Fix(es):

    * libkcapi: IV reuse in libkcapi one-shot symmetric cipher chunking causes cipher state reset across chunk     boundaries (CVE-2026-71225)

    * libkcapi: Memory corruption via uncanceled AIO requests on error in libkcapi's one-shot AIO path     (CVE-2026-71226)

    * libkcapi: Infinite loop denial of service in libkcapi _kcapi_aio_read_all() due to unhandled     io_getevents() timeout return (CVE-2026-71227)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

  - 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)

  - Memory Corruption via Uncanceled AIO Requests on Error: libkcapi's one-shot AIO path can return an error
    before all submitted IOCBs are drained, allowing later kernel writes into caller-owned output buffers.
    (CVE-2026-71226)

  - A flaw was found in libkcapi. A local attacker can influence an application that uses the Asynchronous
    Input/Output (AIO) interface. By reusing an AIO-enabled handle after a prior completion error, the
    _kcapi_aio_read_all() function can enter a non-terminating wait loop. This can lead to a persistent denial
    of service, making the affected application or thread unresponsive. (CVE-2026-71227)

The remote Fedora 46 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-e3ee465ab3 advisory.

    Automatic update for libkcapi-1.5.1-2.fc46.

    ##### **Changelog**

    ```
    * Thu Aug 20 2026 Ondrej Mosnek <omosnacek@gmail.com> - 1.5.1-2
    - Apply pending upstream patch to fix the auxiliary test
    * Tue Aug 18 2026 Ondrej Mosnek <omosnacek@gmail.com> - 1.5.1-1
    - Update to version 1.5.1 (fedora#2512793)
    - Fix CVE-2026-71225 (fedora#2511445)
    - Fix CVE-2026-71226 (fedora#2511484)
    - Fix CVE-2026-71227 (fedora#2511487)

    ```

    ----

    Automatic update for libkcapi-1.5.1-1.fc46.


Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 45 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-1a1eac3dfb advisory.

    Automatic update for libkcapi-1.5.1-2.fc45.

    ##### **Changelog**

    ```
    * Thu Aug 20 2026 Ondrej Mosnek <omosnacek@gmail.com> - 1.5.1-2
    - Apply pending upstream patch to fix the auxiliary test
    * Tue Aug 18 2026 Ondrej Mosnek <omosnacek@gmail.com> - 1.5.1-1
    - Update to version 1.5.1 (fedora#2512793)
    - Fix CVE-2026-71225 (fedora#2511445)
    - Fix CVE-2026-71226 (fedora#2511484)
    - Fix CVE-2026-71227 (fedora#2511487)

    ```

    ----

    Automatic update for libkcapi-1.5.1-1.fc45.


Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Memory Corruption via Uncanceled AIO Requests on Error: libkcapi's one-shot AIO path can return an error     before all submitted IOCBs are drained, allowing later kernel writes into caller-owned output buffers.
    (CVE-2026-71226)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
346248	MiracleLinux 9 : libkcapi-1.4.0-3.el9_8.ML.1 (AXSA:2026-1845:02)	Nessus	Miracle Linux Local Security Checks	Local	high
346029	RockyLinux 9 : libkcapi (RLSA-2026:67265)	Nessus	Rocky Linux Local Security Checks	Local	high
345988	Oracle Linux 10 : ELSA-2026-67267-0: / libkcapi (ELSA-2026-672670)	Nessus	Oracle Linux Local Security Checks	Local	high
345986	Oracle Linux 9 : ELSA-2026-67265-0: / libkcapi (ELSA-2026-672650)	Nessus	Oracle Linux Local Security Checks	Local	high
345983	Oracle Linux 8 : ELSA-2026-67266-0: / libkcapi (ELSA-2026-672660)	Nessus	Oracle Linux Local Security Checks	Local	high
345945	AlmaLinux 9 : libkcapi (ALSA-2026:67265)	Nessus	Alma Linux Local Security Checks	Local	high
345928	RockyLinux 10 : libkcapi (RLSA-2026:67267)	Nessus	Rocky Linux Local Security Checks	Local	high
345892	MiracleLinux 8 : libkcapi-1.4.0-3.el8_10 (AXSA:2026-1835:01)	Nessus	Miracle Linux Local Security Checks	Local	high
345866	RockyLinux 8 : libkcapi (RLSA-2026:67266)	Nessus	Rocky Linux Local Security Checks	Local	high
345622	AlmaLinux 10 : libkcapi (ALSA-2026:67267)	Nessus	Alma Linux Local Security Checks	Local	high
345613	AlmaLinux 8 : libkcapi (ALSA-2026:67266)	Nessus	Alma Linux Local Security Checks	Local	high
345602	RHEL 10 : libkcapi (RHSA-2026:67267)	Nessus	Red Hat Local Security Checks	Local	high
345598	RHEL 9 : libkcapi (RHSA-2026:67265)	Nessus	Red Hat Local Security Checks	Local	high
345596	RHEL 8 : libkcapi (RHSA-2026:67266)	Nessus	Red Hat Local Security Checks	Local	high
446263	Alpine: multiple libkcapi packages: security update to 1.5.1-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	Local	high
446263	Alpine: multiple libkcapi packages: security update to 1.5.1-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	Local	high
338610	Fedora 46 : libkcapi (2026-e3ee465ab3)	Nessus	Fedora Local Security Checks	Local	high
338381	Fedora 45 : libkcapi (2026-1a1eac3dfb)	Nessus	Fedora Local Security Checks	Local	high
332237	Linux Distros Unpatched Vulnerability : CVE-2026-71226	Nessus	Misc.	Local	high

Detections

Analytics

CVE-2026-71226

high

Tenable Plugins

high

high

high

high

high

high

high

high

high

high

high

high

high

high

high

high

high

high

high