kernel: libceph: prevent potential out-of-bounds reads in handle_auth_done()

In the Linux kernel, the following vulnerability has been resolved: libceph: prevent potential out-of-bounds reads in handleauthdone Perform an explicit bounds check on payloadlen to avoid a possible out-of-bounds access in the callout. idryomov: changelog...

The vulnerability of the mon_handle_auth_done() function in the net/ceph/mon_client.c module, which is part of the Linux kernel’s networking functions, allows a attacker to compromise the confidentiality, integrity, and accessibility of the protected information.

The vulnerability of the monhandleauthdone function in the net/ceph/monclient.c module, which is part of the Linux kernel’s networking functions, relates to the assignment of pointers. Exploiting this vulnerability could allow an attacker to compromise the confidentiality, integrity, and...

The vulnerability of the `alloc_choose_arg_map()` function in the `net/ceph/osdmap.c` module, which is part of the Linux kernel’s networking functions, allows a attacker to compromise the confidentiality, integrity, and accessibility of the protected information.

The vulnerability of the allocchooseargmap function in the net/ceph/osdmap.c module, which is part of the Linux kernel’s networking functions, relates to the pointer manipulation. Exploiting this vulnerability could allow an attacker to compromise the confidentiality, integrity, and accessibility...

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...

CVE-2026-52957

A flaw was found in the Linux kernel's libceph component. When processing a CEPHMSGOSDMAP message containing a specially crafted CRUSH map, a remote attacker could potentially trigger a null pointer dereference. This issue arises during the decoding of crushchooseargmap if a bucketindex refers to...

CVE-2026-52961

A flaw was found in the Linux kernel's Ceph filesystem component. A race condition exists in the cephbuildxattrsblob function where the required extended attribute xattr blob size is computed before the buildxattrs call. During this window, another process can update the xattr blob, leading to a...

CVE-2026-52962

A flaw was found in the Linux kernel, specifically within the Ceph file system's extended attribute handling. A buffer leak occurs in the cephsetxattr function because a previously allocated buffer oldblob is not properly released. This can lead to resource exhaustion over time, potentially causi...

SUSE CVE-2026-52954

In the Linux kernel, the following vulnerability has been resolved: libceph: handle rbtree insertion error in decodechooseargs A message of type CEPHMSGOSDMAP contains an OSD map that itself contains a CRUSH map. The received CRUSH map may optionally contain chooseargs that get decoded in...

SUSE CVE-2026-52958

In the Linux kernel, the following vulnerability has been resolved: libceph: Fix potential out-of-bounds access in osdmapdecode When decoding osdstate and osdweight from an incoming osdmap in osdmapdecode, both are decoded for each osd, i.e., map-maxosd times. The cephdecodeneed check only accoun...

SUSE CVE-2026-52960

In the Linux kernel, the following vulnerability has been resolved: ceph: put folios not suitable for writeback The batch holds references to the folios see filemapgetfolios, foliobatchrelease, so we need to folioput the folios we remove. Tested on v6.18...

SUSE CVE-2026-52961

In the Linux kernel, the following vulnerability has been resolved: ceph: fix BUGON in cephbuildxattrsblob due to stale blob size The generic/642 test-case can reproduce the kernel crash: 40243.605254 ------------ cut here ------------ 40243.605956 kernel BUG at fs/ceph/xattr.c:918! 40243.607142...

SUSE CVE-2026-52962

In the Linux kernel, the following vulnerability has been resolved: ceph: fix a buffer leak in cephsetxattr The oldblob in cephsetxattr can store ci-ixattrs.preallocblob value during the retry. However, it is never called the cephbufferput for the oldblob object. This patch fixes the issue of the...

CVE-2026-52955

A flaw was found in the libceph component of the Linux kernel. A remote attacker could send a specially crafted CEPHMSGOSDMAP message where two internal fields, alg and b-alg, contain differing bucket algorithm values. This discrepancy can lead to an out-of-bounds memory access during processing ...

CVE-2026-52960

A flaw was found in the Linux kernel's Ceph component. This vulnerability occurs due to improper handling of memory pages, known as folios, that are not suitable for writeback. When certain folios are removed, their references are not properly released, leading to a resource leak. A local attacke...

CVE-2026-52954

A flaw was found in the Linux kernel's libceph component. A remote attacker could send a specially crafted CEPHMSGOSDMAP message containing a corrupted CRUSH map. If this map includes two crushchooseargmaps with identical indices, it triggers an assertion failure, leading to a kernel bug and a...

Linux Distros Unpatched Vulnerability : CVE-2026-52962

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ceph: fix a buffer leak in cephsetxattr The oldblob in cephsetxattr can store ci-ixattrs.preallocblob value during the retry. However, it is never called the...

Linux Distros Unpatched Vulnerability : CVE-2026-52961

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ceph: fix BUGON in cephbuildxattrsblob due to stale blob size The generic/642 test-case can reproduce the kernel crash: 40243.605254 ------------ cut here...

EUVD-2026-38828

In the Linux kernel, the following vulnerability has been resolved: ceph: put folios not suitable for writeback The batch holds references to the folios see filemapgetfolios, foliobatchrelease, so we need to folioput the folios we remove. Tested on v6.18...

EUVD-2026-38829

In the Linux kernel, the following vulnerability has been resolved: ceph: fix BUGON in cephbuildxattrsblob due to stale blob size The generic/642 test-case can reproduce the kernel crash: 40243.605254 ------------ cut here ------------ 40243.605956 kernel BUG at fs/ceph/xattr.c:918! 40243.607142...

EUVD-2026-38824

In the Linux kernel, the following vulnerability has been resolved: libceph: Fix potential out-of-bounds access in cephxdecrypt In cephxdecrypt, a part of the buffer p is interpreted as a cephxencryptheader, and the magic field of this struct is accessed. This happens without any guarantee that t...