The vulnerability of the `ceph_get_snapdir()` function in the `fs/ceph/inode.c` module of the distributed file system support module for Linux kernels allows a attacker to cause a service failure.

The vulnerability of the cephgetsnapdir function in the fs/ceph/inode.c module of the distributed file system support module for Linux operating systems is related to incomplete cleanup of temporary or auxiliary resources. Exploiting this vulnerability can allow an attacker to cause service...

USN-8492-5: Linux kernel (FIPS) vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - MIPS architecture; - PowerPC architecture; - x86 architecture; - Block layer subsystem; -...

USN-8498-1: Linux kernel (NVIDIA Tegra) vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - MIPS architecture; - PowerPC architecture; - x86 architecture; - Block layer subsystem; -...

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...

Ubuntu 20.04 LTS : Linux kernel (FIPS) vulnerabilities (USN-7495-2)

The remote Ubuntu 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7495-2 advisory. Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in...

UBUNTU-CVE-2026-46066

In the Linux kernel, the following vulnerability has been resolved: ceph: fix numops off-by-one when crypto allocation fails movedirtyfolioinpagearray may fail if the file is encrypted, the dirty folio is not the first in the batch, and it fails to allocate a bounce buffer to hold the ciphertext...

CVE-2026-46066

In the Linux kernel, the following vulnerability has been resolved: ceph: fix numops off-by-one when crypto allocation fails movedirtyfolioinpagearray may fail if the file is encrypted, the dirty folio is not the first in the batch, and it fails to allocate a bounce buffer to hold the ciphertext...

CVE-2026-43419

A flaw was found in the Linux kernel's Ceph file system component. Improper memory deallocation within the cephmdscbuildpath function can lead to memory leaks. This occurs when the "path" pointer, obtained by getname, is not properly freed in error handling paths. Over time, these memory leaks...

CVE-2026-43420

A flaw was found in the Linux kernel's Ceph file system client. A race condition during asynchronous file unlink operations can lead to an inlink counter underrun. This vulnerability allows an attacker to trigger a kernel warning, potentially causing system instability and a Denial of Service DoS...

CVE-2026-43273

A flaw was found in the Linux kernel's Ceph file system module. The cephzeropartialobject function, responsible for handling object write operations, was missing proper snapshot context. This oversight could allow a local attacker to cause data inconsistencies within snapshots, leading to a loss ...

The vulnerability of the send_flush_mdlog() function in the fs/ceph/mds_client.c module, which is part of the Ceph distributed file system support for Linux operating systems, allows a attacker to cause a service failure.

The vulnerability of the sendflushmdlog function in the fs/ceph/mdsclient.c module, which is part of the Ceph distributed file system support for Linux operating systems, involves a memory leak. Exploiting this vulnerability could allow an attacker to cause a service failure...

The vulnerability of the ceph_mds_check_access() function in the fs/ceph/mds_client.c module, a part of the distributed file system Ceph support for Linux operating systems, allows a attacker to gain unauthorized access to protected information.

The vulnerability of the cephmdscheckaccess function in the fs/ceph/mdsclient.c module of the distributed file system support module for Linux operating systems is related to errors during the update of the reference counter. Exploiting this vulnerability can allow an attacker to gain unauthorize...

The vulnerability of the handle_cap_grant() function in the fs/ceph/caps.c module of the Ceph distributed file system support module for Linux operating systems allows a attacker to cause a service failure.

The vulnerability of the handlecapgrant function in the fs/ceph/caps.c module of the Ceph distributed file system support module for Linux operating systems is related to the occurrence of mutual locking. Exploiting this vulnerability could allow a attacker to trigger a service failure...

CVE-2026-23189

CVE-2026-23189 concerns a NULL pointer dereference in ceph_mds_auth_match() within the CephFS kernel client. The patch reworks ceph_mdsmap_decode() and namespace_equals() so that ceph_mdsmap contains an extracted FS name (m_fs_name) and the code path uses this value for strict authorization check...

CVE-2026-23189 ceph: fix NULL pointer dereference in ceph_mds_auth_match()

In the Linux kernel, the following vulnerability has been resolved: ceph: fix NULL pointer dereference in cephmdsauthmatch The CephFS kernel client has regression starting from 6.18-rc1. We have issue in cephmdsauthmatch if fsname == NULL: const char fsname = mdsc-fsc-mountoptions-mdsnamespace;...

kernel: libceph: fix potential use-after-free in have_mon_and_osd_map()

A use-after-free vulnerability was found in the Ceph client session initialization in the Linux kernel. The havemonandosdmap function checks map epochs without holding the appropriate locks, racing with concurrent map updates that free the old map. This can result in dereferencing freed memory...

Ubuntu 14.04 LTS : Linux kernel vulnerabilities (USN-7986-1)

The remote Ubuntu 14.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7986-1 advisory. Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in...

USN-7986-1: Linux kernel vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Ceph distributed file system; - JFFS2 file system; - Timer subsystem; - USB sound devices; CVE-2024-26689,...

ceph: privilege escalation by unprivileged users in a ceph-fuse mounted CephFS

A vulnerability in Ceph was discovered whereby an unprivileged user could change the permissions of a directory owned by the root user, gaining access to the targeted directory. The non-privileged user can escalate privileges to root in a CephFS mounted with ceph-fuse by applying chmod 777 read,...

kernel: libceph: fix potential use-after-free in have_mon_and_osd_map()

A use-after-free vulnerability was found in the Ceph client session initialization in the Linux kernel. The havemonandosdmap function checks map epochs without holding the appropriate locks, racing with concurrent map updates that free the old map. This can result in dereferencing freed memory...