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-2026-52954

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...

EUVD-2026-38825

In the Linux kernel, the following vulnerability has been resolved: libceph: Fix potential null-ptr-deref in decodechooseargs A message of type CEPHMSGOSDMAP contains an OSD map that itself contains a CRUSH map. When decoding this CRUSH map in crushdecode, an array of maxbuckets CRUSH buckets is...

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...

CVE-2026-52955

In the Linux kernel, the following vulnerability has been resolved: libceph: Fix potential out-of-bounds access in crushdecode A message of type CEPHMSGOSDMAP containing a crush map with at least one bucket has two fields holding the bucket algorithm. If the values in these two fields differ, an...

CVE-2026-52957

In the Linux kernel, the following vulnerability has been resolved: libceph: Fix potential null-ptr-deref in decodechooseargs A message of type CEPHMSGOSDMAP contains an OSD map that itself contains a CRUSH map. When decoding this CRUSH map in crushdecode, an array of maxbuckets CRUSH buckets is...

CVE-2026-52955 libceph: Fix potential out-of-bounds access in crush_decode()

In the Linux kernel, the following vulnerability has been resolved: libceph: Fix potential out-of-bounds access in crushdecode A message of type CEPHMSGOSDMAP containing a crush map with at least one bucket has two fields holding the bucket algorithm. If the values in these two fields differ, an...

CVE-2026-52955

The CVE-2026-52955 vulnerability affects the Linux kernel’s libceph crush_decode(). A CEPH_MSG_OSD_MAP containing a crush map with at least one bucket could have two bucket algorithm fields (alg and b->alg) that differ, leading to potential out-of-bounds access during allocation or destruction...

kernel: Linux kernel: Denial of Service in libceph OSD client due to unreset sparse-read state

A flaw was found in the Linux kernel's libceph OSD client. When a connection fault occurs during a sparse read, the sparse-read state is not properly reset. This allows a misbehaving or compromised Ceph OSD server, or a network adversary, to disrupt traffic. As a result, the client can misinterpr...

kernel: libceph: replace overzealous BUG_ON in osdmap_apply_incremental()

In the Linux kernel, the following vulnerability has been resolved: libceph: replace overzealous BUGON in osdmapapplyincremental If the osdmap is maliciously corrupted such that the incremental osdmap epoch is different from what is expected, there is no need to BUG. Instead, just declare the...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: libceph: The state of sparse-read was reset in osdfault. When a fault occurs, the connection is abandoned, re-established, and any pending operations are retried. The OSD client tracks the progress of a sparse-read reply using a...

kernel-rt security update

An update is available for kernel-rt. This update affects Rocky Linux 8. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list The kernel-rt packages provide the Real Time Linux Kernel, which enables...

kernel: libceph: replace overzealous BUG_ON in osdmap_apply_incremental()

In the Linux kernel, the following vulnerability has been resolved: libceph: replace overzealous BUGON in osdmapapplyincremental If the osdmap is maliciously corrupted such that the incremental osdmap epoch is different from what is expected, there is no need to BUG. Instead, just declare the...

kernel security update

An update is available for kernel. This update affects Rocky Linux 9. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list The kernel packages contain the Linux kernel, the core of any Linux operating...

kernel: libceph: make decode_pool() more resilient against corrupted osdmaps

In the Linux kernel, the following vulnerability has been resolved: libceph: make decodepool more resilient against corrupted osdmaps If the osdmap is maliciously corrupted such that the encoded length of cephpgpool envelope is less than what is expected for a particular encoding version,...

Important: Red Hat Security Advisory: kernel security update

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

kernel: libceph: replace overzealous BUG_ON in osdmap_apply_incremental()

In the Linux kernel, the following vulnerability has been resolved: libceph: replace overzealous BUGON in osdmapapplyincremental If the osdmap is maliciously corrupted such that the incremental osdmap epoch is different from what is expected, there is no need to BUG. Instead, just declare the...

SUSE CVE-2026-43273

In the Linux kernel, the following vulnerability has been resolved: ceph: supply snapshot context in cephzeropartialobject The cephzeropartialobject function was missing proper snapshot context for its OSD write operations, which could lead to data inconsistencies in snapshots. Reproducer:...

AlmaLinux 9 : kernel (ALSA-2026:13565)

The remote AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:13565 advisory. kernel: Linux kernel: Denial of Service in libceph OSD client due to unreset sparse-read state CVE-2026-23136 kernel: Linux kernel: Use-after-free in...

EUVD-2026-27670

In the Linux kernel, the following vulnerability has been resolved: ceph: supply snapshot context in cephzeropartialobject The cephzeropartialobject function was missing proper snapshot context for its OSD write operations, which could lead to data inconsistencies in snapshots. Reproducer:...