Moderate: kernel security update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: cifs: Fix integer overflow while processing acregmax mount option CVE-2025-21964 For more details about the security issues, including the impact, a CVSS score, acknowledgments, and other...

The vulnerability of the cifs_compose_mount_options() function in the fs/smb/client/cifsproto.h module, a support module for the SMB client in Linux kernel, allows a hacker to trigger a service failure.

The vulnerability of the cifscomposemountoptions function in the fs/smb/client/cifsproto.h module, which is part of the SMB client support in Linux kernel, is related to synchronization errors when using shared resources. Exploiting this vulnerability can allow an attacker to cause a service...

CVE-2025-22077

In the Linux kernel, the following vulnerability has been resolved: Revert "smb: client: fix TCP timers deadlock after rmmod" This reverts commit e9f2517a3e18a54a3943c098d2226b245d488801. Commit e9f2517a3e18 "smb: client: fix TCP timers deadlock after rmmod" is intended to fix a null-ptr-deref in...

CVE-2025-21962

In the Linux kernel, the following vulnerability has been resolved: cifs: Fix integer overflow while processing closetimeo mount option User-provided mount parameter closetimeo of type u32 is intended to have an upper limit, but before it is validated, the value is converted from seconds to jiffi...

CVE-2025-21964

CVE-2025-21964 affects the Linux kernel CIFS mount option acregmax. The issue arises when user-provided acregmax (u32) is not yet validated; its value is converted from seconds to jiffies, which can overflow an integer. This is a local vulnerability in which an attacker with local access could po...

CVE-2025-21963 cifs: Fix integer overflow while processing acdirmax mount option

In the Linux kernel, the following vulnerability has been resolved: cifs: Fix integer overflow while processing acdirmax mount option User-provided mount parameter acdirmax of type u32 is intended to have an upper limit, but before it is validated, the value is converted from seconds to jiffies...

CVE-2025-21962

CVE-2025-21962 affects the Linux kernel CIFS mount option closetimeo, where user-provided closetimeo (u32) is converted to jiffies before validation, allowing an integer overflow. Connected sources (Astra Linux, ALAS AWS advisories, Debian/Red Hat references) confirm this as a kernel-level issue ...

CVE-2025-21962 cifs: Fix integer overflow while processing closetimeo mount option

In the Linux kernel, the following vulnerability has been resolved: cifs: Fix integer overflow while processing closetimeo mount option User-provided mount parameter closetimeo of type u32 is intended to have an upper limit, but before it is validated, the value is converted from seconds to jiffi...

Linux Distros Unpatched Vulnerability : CVE-2021-47544

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - tcp: fix page frag corruption on page fault Steffen reported a TCP stream corruption for HTTP requests served by the apache web-server using a cifs mount-point...

CVE-2022-49541

In the Linux kernel, the following vulnerability has been resolved: cifs: fix potential double free during failed mount RHBZ: https://bugzilla.redhat.com/showbug.cgi?id=2088799...

CVE-2022-49541

In the Linux kernel, the following vulnerability has been resolved: cifs: fix potential double free during failed mount RHBZ: https://bugzilla.redhat.com/showbug.cgi?id=2088799...

SUSE CVE-2022-48919

In the Linux kernel, the following vulnerability has been resolved: cifs: fix double free race when mount fails in cifsgetroot When cifsgetroot fails during cifssmb3domount we call deactivatelockedsuper which eventually will call delayedfree which will free the context. In this situation we shoul...

UBUNTU-CVE-2022-48919

In the Linux kernel, the following vulnerability has been resolved: cifs: fix double free race when mount fails in cifsgetroot When cifsgetroot fails during cifssmb3domount we call deactivatelockedsuper which eventually will call delayedfree which will free the context. In this situation we shoul...

SUSE CVE-2021-47544

In the Linux kernel, the following vulnerability has been resolved: tcp: fix page frag corruption on page fault Steffen reported a TCP stream corruption for HTTP requests served by the apache web-server using a cifs mount-point and memory mapping the relevant file. The root cause is quite similar...

CVE-2021-47544

In the Linux kernel, the following vulnerability has been resolved: tcp: fix page frag corruption on page fault Steffen reported a TCP stream corruption for HTTP requests served by the apache web-server using a cifs mount-point and memory mapping the relevant file. The root cause is quite similar...

DEBIAN-CVE-2021-47544

In the Linux kernel, the following vulnerability has been resolved: tcp: fix page frag corruption on page fault Steffen reported a TCP stream corruption for HTTP requests served by the apache web-server using a cifs mount-point and memory mapping the relevant file. The root cause is quite similar...

CVE-2021-47544

In the Linux kernel, the following vulnerability has been resolved: tcp: fix page frag corruption on page fault Steffen reported a TCP stream corruption for HTTP requests served by the apache web-server using a cifs mount-point and memory mapping the relevant file. The root cause is quite similar...

CVE-2021-47544

In the Linux kernel, the following vulnerability has been resolved: tcp: fix page frag corruption on page fault Steffen reported a TCP stream corruption for HTTP requests served by the apache web-server using a cifs mount-point and memory mapping the relevant file. The root cause is quite similar...

CVE-2021-47544

CVE-2021-47544 : Linux kernel TCP path shows page frag corruption on a page fault, resolved by a patch that fixes nested sk_page_frag() usage during page faults involving CIFS-mapped user buffers. Root cause: page fault handling can initiate an SMB transaction on a different socket within the sam...

AZL-54137 CVE-2023-52572 affecting package kernel for versions less than 5.15.182.1-1

In the Linux kernel, the following vulnerability has been resolved: cifs: Fix UAF in cifsdemultiplexthread There is a UAF when xfstests on cifs: BUG: KASAN: use-after-free in smb2isnetworknamedeleted+0x27/0x160 Read of size 4 at addr ffff88810103fc08 by task cifsd/923 CPU: 1 PID: 923 Comm: cifsd...