Affected: AlmaLinux:10: kernel-abi-stablelists, AlmaLinux:10: kernel-doc

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

* kernel: Linux kernel: Memory corruption in Squashfs due to incorrect block size calculation (CVE-2025-38415) * kernel: vsock/vmci: Clear the vmci transport packet properly when initializing it (CVE-2025-38403) * kernel: Linux kernel: Data corruption and system instability due to improper io_uring/net buffer handling (CVE-2025-38730) * kernel: smb: client: let recv_done verify data_offset, data_length and remaining_data_length (CVE-2025-39933) * kernel: mptcp: Use __sk_dst_get() and dst_dev_rcu() in mptcp_active_enable() (CVE-2025-40133) * kernel: Linux kernel: Out-of-bounds write in fbdev can lead to privilege escalation, information disclosure, or denial of service. (CVE-2025-40304) * kernel: Linux kernel: Information disclosure and denial of service via out-of-bounds read in font glyph handling (CVE-2025-40322) * kernel: svcrdma: use rc_pageoff for memcpy byte offset (CVE-2025-68811)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Affected: Alpaquita:25: linux-lts, Alpaquita:stream: linux-lts

In the Linux kernel, the following vulnerability has been resolved:

mptcp: Use __sk_dst_get() and dst_dev_rcu() in mptcp_active_enable().

mptcp_active_enable() is called from subflow_finish_connect(), which is icsk->icsk_af_ops->sk_rx_dst_set() and it's not always under RCU.

Using sk_dst_get(sk)->dev could trigger UAF.

Let's use __sk_dst_get() and dst_dev_rcu().

In the Linux kernel, the following vulnerability has been resolved:

mptcp: Use __sk_dst_get() and dst_dev_rcu() in mptcp_active_enable().

mptcp_active_enable() is called from subflow_finish_connect(), which is icsk->icsk_af_ops->sk_rx_dst_set() and it's not always under RCU.

Using sk_dst_get(sk)->dev could trigger UAF.

Let's use __sk_dst_get() and dst_dev_rcu().

Security update for the Linux Kernel

kernel: Linux kernel: Information disclosure and denial of service in ntb_hw_switchtec module kernel: Linux kernel erofs: Use-After-Free due to device type mismatch kernel: io_uring/msg_ring: ensure io_kiocb freeing is deferred for RCU kernel: net/sched: mqprio: fix stack out-of-bounds write in tc entry parsing kernel: smb: client: let recv_done verify data_offset, data_length and remaining_data_length kernel: io_uring/waitid: always prune wait queue entry in io_waitid_wait() kernel: mptcp: Use __sk_dst_get() and dst_dev_rcu() in mptcp_active_enable() kernel: sctp: avoid NULL dereference when chunk data buffer is missing kernel: Linux kernel: vsock vulnerability may lead to memory corruption kernel: devlink: rate: Unset parent pointer in devl_rate_nodes_destroy kernel: mptcp: fix race condition in mptcp_schedule_work() kernel: Linux kernel: Information disclosure and denial of service in Bluetooth HCI event handling kernel: Linux kernel: Out-of-bounds write in fbdev can lead to privilege escalation, information disclosure, or denial of service. kernel: Bluetooth: hci_sync: fix race in hci_cmd_sync_dequeue_once kernel: Linux kernel: Information disclosure and denial of service via out-of-bounds read in font glyph handling kernel: net: atlantic: fix fragment overflow handling in RX path

Security update for the Linux Kernel

Affected: Ubuntu:16.04:LTS: linux-hwe-edge, Ubuntu:18.04:LTS: linux-aws-5.0, Ubuntu:18.04:LTS: linux-aws-5.3, Ubuntu:18.04:LTS: linux-azure, Ubuntu:18.04:LTS: linux-azure-5.3, Ubuntu:18.04:LTS: linux-azure-edge, Ubuntu:18.04:LTS: linux-gcp, Ubuntu:18.04:LTS: linux-gcp-5.3, Ubuntu:18.04:LTS: linux-gke-4.15, Ubuntu:18.04:LTS: linux-gke-5.4 and 102 more

In the Linux kernel, the following vulnerability has been resolved: mptcp: Use __sk_dst_get() and dst_dev_rcu() in mptcp_active_enable(). mptcp_active_enable() is called from subflow_finish_connect(), which is icsk->icsk_af_ops->sk_rx_dst_set() and it's not always under RCU. Using sk_dst_get(sk)->dev could trigger UAF. Let's use __sk_dst_get() and dst_dev_rcu().

Ein Angreifer kann mehrere Schwachstellen im Linux-Kernel ausnutzen, um nicht näher spezifizierte Angriffe durchzuführen, die möglicherweise zu einer Denial-of-Service- Bedingung führen oder eine Speicherbeschädigung verursachen können.