kernel: libceph: refresh auth->authorizer_buf{,_len} after authorizer update

A flaw was found in the libceph component of the Linux kernel. During an authorizer update, if the authorizer is rebuilt, a stale pointer to a freed memory region can be retained. A remote attacker could exploit this by triggering a specific network reconnection, leading to a use-after-free...

kernel: Linux kernel (libceph): Denial of Service due to malformed monitor maps

A flaw was found in the libceph component of the Linux kernel. A remote attacker could send a specially crafted monitor map monmap that advertises zero monitors. This malformed monmap is incorrectly processed as valid, which can lead to a client crash when attempting to open a session. This...

kernel: Linux kernel: libceph null pointer dereference leads to denial of service

A flaw was found in libceph, a component of the Linux kernel. When processing a malformed CRUSH map, if a parent bucket's name exists but its type is missing, a null pointer dereference can occur. This issue can lead to a system crash, resulting in a Denial of Service DoS...

kernel: Linux kernel: libceph stack out-of-bounds write via crafted OSDMap

A flaw was found in libceph in the Linux kernel. A remote attacker, acting as a malicious monitor, could send a specially crafted OSDMap Object Storage Device Map with an overly long pgtemp or pgupmap entry. This could lead to a stack out-of-bounds write, resulting in a kernel bug and potentially...

kernel: Linux kernel (libceph): Denial of Service due to malformed monitor maps

A flaw was found in the libceph component of the Linux kernel. A remote attacker could send a specially crafted monitor map monmap that advertises zero monitors. This malformed monmap is incorrectly processed as valid, which can lead to a client crash when attempting to open a session. This...

kernel: Linux kernel: libceph stack out-of-bounds write via crafted OSDMap

A flaw was found in libceph in the Linux kernel. A remote attacker, acting as a malicious monitor, could send a specially crafted OSDMap Object Storage Device Map with an overly long pgtemp or pgupmap entry. This could lead to a stack out-of-bounds write, resulting in a kernel bug and potentially...

kernel: libceph: refresh auth->authorizer_buf{,_len} after authorizer update

A flaw was found in the libceph component of the Linux kernel. During an authorizer update, if the authorizer is rebuilt, a stale pointer to a freed memory region can be retained. A remote attacker could exploit this by triggering a specific network reconnection, leading to a use-after-free...

kernel: Linux kernel: libceph null pointer dereference leads to denial of service

A flaw was found in libceph, a component of the Linux kernel. When processing a malformed CRUSH map, if a parent bucket's name exists but its type is missing, a null pointer dereference can occur. This issue can lead to a system crash, resulting in a Denial of Service DoS...

RHEL 9 : kernel (RHSA-2026:98047)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:98047 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: netfilter: nfqueue: hold brid...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-151159)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-151159 advisory. In the Linux kernel, the following vulnerability has been resolved: libceph: reject buckets with mismatched CRUSH ids crushdecode stores bucket data by array slot, a...

Astra Linux – vulnerability in linux-6.1, linux-6.12, linux-6.18

In the Linux kernel, the following vulnerability has been resolved: libceph: fix two unsafe bare decodes in decodelockers decodelockers in clslockclient.c contains two bare decode operations that allow a malicious or compromised OSD to trigger slab-out-of-bounds reads: 1. cephdecode32p at the...

Astra Linux – vulnerability in linux-6.1, linux-6.12, linux-6.18

In the Linux kernel, the following vulnerability has been resolved: libceph: bound getversion reply decode to front len handlegetversionreply uses msg-frontalloclen as the decode boundary for MONGETVERSIONREPLY. This is the size of the reused reply buffer, not the number of bytes actually receive...

Astra Linux – vulnerability in linux-6.1

In the Linux kernel, the following vulnerability has been resolved: libceph: reject buckets with mismatched CRUSH ids crushdecode stores bucket data by array slot, and the mapper later derives the per-bucket workspace index from the decoded bucket id. Therefore, a malformed map can cause one buck...

Astra Linux – vulnerability in linux-6.1, linux-6.12, linux-6.18

In the Linux kernel, the following vulnerability has been resolved: libceph: reject zero bucket types in crushdecode CRUSH bucket type 0 is reserved for devices. The mapper relies on this invariant and uses type 0 to identify leaf devices. If crushdecode accepts a bucket with type 0, a malformed...

Astra Linux – vulnerability in linux-6.1, linux-6.12, linux-6.18

In the Linux kernel, the following vulnerability has been resolved: libceph: remove debugfs files before client teardown cephdestroyclient tears down the monitor client before removing the per-client debugfs files. A concurrent read of the monmap debugfs file can enter monmapshow after cephmoncst...

Astra Linux – vulnerability in linux-6.1

In the Linux kernel, the following vulnerability has been resolved: libceph: Reject monmaps advertising zero monitors A message of type CEPHMSGMONMAP contains a monmap that is sent from a monitor to the client. This monmap contains information about the existing monitors in the cluster. Currently...

Astra Linux – vulnerability in linux-6.1

In the Linux kernel, the following vulnerability has been resolved: libceph: Refresh auth-authorizerbuf,len after authorizer update cephxcreateauthorizer caches au-buf-vec.iovbase and au-buf-vec.iovlen in struct cephauthhandshake. These cached values are then used by the messenger connect code wh...

kernel: Linux kernel (libceph): Denial of Service due to malformed monitor maps

A flaw was found in the libceph component of the Linux kernel. A remote attacker could send a specially crafted monitor map monmap that advertises zero monitors. This malformed monmap is incorrectly processed as valid, which can lead to a client crash when attempting to open a session. This...

kernel: Linux kernel: libceph stack out-of-bounds write via crafted OSDMap

A flaw was found in libceph in the Linux kernel. A remote attacker, acting as a malicious monitor, could send a specially crafted OSDMap Object Storage Device Map with an overly long pgtemp or pgupmap entry. This could lead to a stack out-of-bounds write, resulting in a kernel bug and potentially...

kernel: libceph: refresh auth->authorizer_buf{,_len} after authorizer update

A flaw was found in the libceph component of the Linux kernel. During an authorizer update, if the authorizer is rebuilt, a stale pointer to a freed memory region can be retained. A remote attacker could exploit this by triggering a specific network reconnection, leading to a use-after-free...