libkcapi: IV reuse in libkcapi one-shot symmetric cipher chunking causes cipher state reset across chunk boundaries

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...

Moderate: Red Hat Security Advisory: libkcapi security, bug fix, and enhancement update

An update for libkcapi is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from t...

Moderate: Red Hat Security Advisory: libkcapi security, bug fix, and enhancement update

An update for libkcapi is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from...

libkcapi: IV reuse in libkcapi one-shot symmetric cipher chunking causes cipher state reset across chunk boundaries

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...

libkcapi: IV reuse in libkcapi one-shot symmetric cipher chunking causes cipher state reset across chunk boundaries

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...

Moderate: Red Hat Security Advisory: libkcapi security update

An update for libkcapi is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from t...

ALSA-2026:67267 Moderate: libkcapi security, bug fix, and enhancement update

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 request...

AlmaLinux 8 : libkcapi (ALSA-2026:67266)

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...

RHEL 10 : libkcapi (RHSA-2026:67267)

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...

AlmaLinux 10 : libkcapi (ALSA-2026:67267)

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...

ALSA-2026:67266 Moderate: libkcapi security update

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 request...

RHEL 8 : libkcapi (RHSA-2026:67266)

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...

Moderate: libkcapi security update

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 request...

OESA-2026-3575 libkcapi security update

The Linux kernel exports a Netlink interface of type AFALG 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...

libkcapi: IV reuse in libkcapi one-shot symmetric cipher chunking causes cipher state reset across chunk boundaries

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...

Linux Distros Unpatched Vulnerability : CVE-2026-74578

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - crypto: algifskcipher - force synchronous processing on trees without ctx-state The AIO/async path in skcipherrecvmsg passes the socket-wide ctx-iv directly int...

CVE-2026-74578

A flaw was found in the Linux kernel's algifskcipher cryptographic module. An unprivileged local user could exploit a race condition in the asynchronous I/O AIO path, where a concurrent operation overwrites the Initialization Vector IV used by an in-flight cryptographic request. This IV reuse...

CVE-2026-74578

In the Linux kernel, the following vulnerability has been resolved: crypto: algifskcipher - force synchronous processing on trees without ctx-state The AIO/async path in skcipherrecvmsg passes the socket-wide ctx-iv directly into the skcipher request. After iosubmit the socket lock is dropped and...

CVE-2026-74578 crypto: algif_skcipher - force synchronous processing on trees without ctx->state

In the Linux kernel, the following vulnerability has been resolved: crypto: algifskcipher - force synchronous processing on trees without ctx-state The AIO/async path in skcipherrecvmsg passes the socket-wide ctx-iv directly into the skcipher request. After iosubmit the socket lock is dropped and...

CVE-2026-74578

CVE-2026-74578 affects the Linux kernel crypto/algif_skcipher path. The AIO/async path in skcipher_recvmsg() could expose an attacker-controlled IV by overwriting ctx->iv via concurrent ALG_SET_IV writes, enabling IV/keystream reuse for CTR/stream modes and potentially plaintext recovery of co...