Unbreakable Enterprise kernel security update

5.4.17-2136.325.5 - perf symbols: Symbol lookup with kcore can fail if multiple segments match stext Krister Johansen Orabug: 35905508 - char: misc: Increase the maximum number of dynamic misc devices to 1048448 D Scott Phillips Orabug: 35905508 - perf/arm-cmn: Fix invalid pointer when access dtc...

kernel: NFSD: fix use-after-free in nfsd4_ssc_setup_dul()

An expired pointer dereference flaw was found in the NFSv4 implementation in the Linux kernel, which may negatively affect system availability when the kernel thread is signaled during a mount/unmount operation. If signalpending returns true, scheduletimeout will not be executed, causing the...

kernel: NFSv4: Don't hold the layoutget locks across multiple RPC calls

In the Linux kernel, the following vulnerability has been resolved: NFSv4: Don't hold the layoutget locks across multiple RPC calls When doing layoutget as part of the open compound, we have to be careful to release the layout locks before we can call any further RPC calls, such as setattr. The...

kernel: cifs: Fix memory leak on the deferred close

In the Linux kernel, the following vulnerability has been resolved: cifs: Fix memory leak on the deferred close xfstests on smb21 report kmemleak as below: unreferenced object 0xffff8881767d6200 size 64: comm "xfsio", pid 1284, jiffies 4294777434 age 20.789s hex dump first 32 bytes: 80 5a d0 11 8...

kernel: nfsd: move init of percpu reply_cache_stats counters back to nfsd_init_net

A flaw was identified in the NFS server nfsd implementation in the Linux kernel where the initialization of the per-CPU replycachestats counters was relocated incorrectly in the code path. This change can lead to use of uninitialized per-CPU statistical counters during NFS request handling when t...

kernel: NFSv4/pnfs: Fix a use-after-free bug in open

In the Linux kernel, the following vulnerability has been resolved: NFSv4/pnfs: Fix a use-after-free bug in open If someone cancels the open RPC call, then we must not try to free either the open slot or the layoutget operation arguments, since they are likely still in use by the hung RPC call...

kernel: ovl: fix use after free in struct ovl_aio_req

A use-after-free flaw was found in the Linux kernel’s Ext4 File System in how a user triggers several file operations simultaneously with the overlay FS usage. This flaw allows a local user to crash or potentially escalate their privileges on the system. Only if patch 9a2544037600 "ovl: fix use...

kernel: rxrpc: Fix timeout of a call that hasn't yet been granted a channel

A NULL pointer dereference flaw was found in the Linux kernel's RxRPC/AFS networking stack. When making an AFS call, the call timer can expire before a connection is assigned if the call gets stalled waiting for a connection. This causes a NULL pointer dereference in rxrpcalloctxbuf when attempti...

kernel: Kernel: Denial of Service in CIFS due to xid leak

A flaw was found in the Linux kernel's Common Internet File System CIFS implementation. This vulnerability occurs in the cifscreate function where an xid transaction ID is not properly freed if the CIFS connection shuts down. A local attacker could exploit this flaw to cause a resource leak,...

kernel: cifs: Fix xid leak in cifs_copy_file_range()

In the Linux kernel, the following vulnerability has been resolved: cifs: Fix xid leak in cifscopyfilerange If the file is used by swap, before return -EOPNOTSUPP, should free the xid, otherwise, the xid will be leaked...

PT-2025-18853 · Linux +3 · Linux Kernel +3

Name of the Vulnerable Software and Affected Versions: Linux kernel versions prior to the fixed version Description: A hung task problem was reported in the Linux kernel, specifically in the ext4 file system. The issue occurs when an inode contains an xattr entry with an ea inum of 15 while...

PT-2025-18864 · Linux +2 · Linux Kernel +2

Name of the Vulnerable Software and Affected Versions: Linux kernel versions prior to the fixed version Description: A vulnerability has been resolved in the Linux kernel. The issue was found by Syzbot and is related to the ext4 file system. Specifically, it concerns the ext4 update inline data...

Rocky Linux 8 : virt:rhel and virt-devel:rhel (RLSA-2022:0886)

The remote Rocky Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2022:0886 advisory. - A flaw was found in the QEMU virtio-fs shared file system daemon virtiofsd implementation. This flaw is strictly related to CVE-2018-13405. A local guest user...

PT-2025-40140

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A flaw exists in the Linux kernel's NFS implementation where a null pointer dereference can occur during parameter parsing. Specifically, the vfs parse fs string function may set the...

Moderate: samba security, bug fix, and enhancement update

Samba is an open-source implementation of the Server Message Block SMB protocol and the related Common Internet File System CIFS protocol, which allow PC-compatible machines to share files, printers, and various information. The following packages have been upgraded to a later upstream version:...

Debian: Security Advisory (DSA-5547-1)

The remote host is missing an update for the Debian SPDX-FileCopyrightText: 2023 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

CVE-2023-4091 Samba: smb clients can truncate files with read-only permissions

A vulnerability was discovered in Samba, where the flaw allows SMB clients to truncate files, even with read-only permissions when the Samba VFS module "aclxattr" is configured with "aclxattr:ignore system acls = yes". The SMB protocol allows opening files when the client requests read-only acces...

CVE-2023-4091

A vulnerability was discovered in Samba, where the flaw allows SMB clients to truncate files, even with read-only permissions when the Samba VFS module "aclxattr" is configured with "aclxattr:ignore system acls = yes". The SMB protocol allows opening files when the client requests read-only acces...

CVE-2023-4091

A vulnerability was discovered in Samba, where the flaw allows SMB clients to truncate files, even with read-only permissions when the Samba VFS module "aclxattr" is configured with "aclxattr:ignore system acls = yes". The SMB protocol allows opening files when the client requests read-only acces...

CVE-2023-4091 Samba: smb clients can truncate files with read-only permissions

A vulnerability was discovered in Samba, where the flaw allows SMB clients to truncate files, even with read-only permissions when the Samba VFS module "aclxattr" is configured with "aclxattr:ignore system acls = yes". The SMB protocol allows opening files when the client requests read-only acces...