Important: Red Hat Security Advisory: Red Hat Ceph Storage

A new version of Red Hat build of Ceph Storage has been released The Red Hat Storage Ceph container images are based on the latest ubi9 base image and Ceph 7.1. This release updates to the latest version...

advisories

LinnemanLabs Research and Advisories Security research, advisories, and proof-of-concept code from LinnemanLabs. Advisories and Research Links to write-ups, disclosures, and reproducible PoCs. Project| Findings / Techniques| CVEs| Result| Write-up| PoC ---|---|---|---|---|--- bluez| ?| ?| LPE to...

CVE-2026-90067

A flaw was found in the Linux kernel's libceph component. A remote attacker could exploit this by sending a specially crafted Ceph messenger v2 protocol banner with a zero-length payload. This malformed banner causes the kernel to attempt a zero-length socket read, which violates internal state...

ROS-20261013-73-0157

The vulnerability of the cephhandleauthreply function in the net/ceph/auth.c module, which is part of the networking functions in the Linux kernel, is related to incorrect checking of the type of input data. Exploiting this vulnerability could allow a malicious actor to cause service failures...

ROS-20261012-73-0011

The vulnerability of the cephmonmapdecode function in the net/ceph/monclient.c module, which implements networking functions for the Linux kernel, is related to integer overflow or cyclic shift vulnerabilities. Exploitation of this vulnerability could allow a remote attacker to cause a service...

Important: kernel

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: smb: client: fix UAF and buffer leak in cifschecktrans2 for malformed secondary T2 CVE-2026-89637 In the Linux kernel, the following vulnerability has been resolved: ceph: bound copied dentry name length in NFS...

Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2026-3183)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-3183 advisory. In the Linux kernel, the following vulnerability has been resolved: smb: client: fix UAF and buffer leak in cifschecktrans2 for malformed secondary T2 CVE-2026-89637 In the Linux kernel, the...

Important: Red Hat Security Advisory: Red Hat Ceph Storage

A new version of Red Hat build of Ceph Storage has been released The Red Hat Storage Ceph container images are based on the latest ubi9 base image and Ceph 8.1. This release updates to the latest version...

Important: Red Hat Security Advisory: Red Hat Ceph Storage 8.1 security and bug fix updates

An update is now available for Red Hat Ceph Storage 8.1. Red Hat Ceph Storage is a scalable, open, software-defined storage platform that combines the most stable version of the Ceph storage system with a Ceph management platform, deployment utilities, and support services. These new packages...

kernel: ceph: kernel: Ceph: exploit of hardcoded IVECs, in a misuse of AES, resulting in authentication bypass

A flaw was found in the CephX authentication protocol used by Ceph, a distributed storage system. CephX uses AES-128-CBC encryption with a hardcoded initialization vector and no message authentication HMAC, making it vulnerable to the same class of unauthenticated-encryption attacks that...

ceph: ceph: RGW SigV4 verifier allows attachment of arbitrary unsigned x-amz-* headers leading to privilege escalation

A flaw was found in Ceph RGW's SigV4 signature verification handler. When processing S3 requests, RGW verifies only the headers explicitly listed in the X-Amz-SignedHeaders field but does not reject requests that carry additional unsigned x-amz- headers. This diverges from the AWS S3 specificatio...

ceph: rhceph-container: Authentication bypass in CEPH RadosGW

A vulnerability in the Ceph Rados Gateway RadosGW OIDC provider allows attackers to bypass JWT signature verification by supplying a token with "none" as the algorithm alg. This occurs because the implementation fails to enforce strict signature validation, enabling attackers to forge valid token...

ceph: ceph: RGW STS session tokens vulnerable to CBC bit-flip attack enabling admin privilege escalation

A flaw was found in Ceph RGW's STS Security Token Service session token implementation. The STS tokens use the same unauthenticated AES-128-CBC encryption as CephX, which lacks message authentication and uses a hardcoded initialization vector. Because there is no integrity protection on the token...

ceph: ceph: MON subscription handler exposes config-key store to low-privilege CephX users

A flaw was found in the MON subscription handler of Ceph, a distributed storage system. The handler does not properly authorize access to the config-key store when processing MMonSubscribe messages. Any CephX user holding mon allow r capabilities can read the entire config-key store, which contai...

Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 26.04 LTS : Ceph vulnerability (USN-8867-1)

The remote Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 26.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-8867-1 advisory. It was discovered that the Ceph Object Gateway RGW SigV4 handler did not reject requests carrying x-amz- headers that were...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: ceph: A buffer leak in cephsetxattr has been fixed. In the cephsetxattr function, the oldblob can store the ci-ixattrs.preallocblob value during a retry. However, the cephbufferput method is never called for the oldblob object...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: Ceph: Proper snapshot context was provided for the cephzeropartialobject function. The cephzeropartialobject function lacked the correct snapshot context for its OSD write operations, which could lead to inconsistencies in...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: libceph: Use u32 for non-negative values in cephmonmapDecode This patch fixes unnecessary implicit conversions that change the signedness of bloblen and nummon in cephmonmapDecode. Currently, bloblen and nummon are signed int...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: Ceph: The dadd function only adds entries to negative dentries when they are not already present in the primary dcache hash. Ceph may call dadddentry, NULL on a negative dentry that already exists in the primary dcache hash. This...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: ceph: Stopping functions that attempt paths longer than PATHMAX If the full path to be built by cephmdscbuildpath is longer than PATHMAX, this function will enter an endless loop, effectively blocking the entire task. Most of the...