kernel: ipv4: free inet_opt and ireq_opt after an RCU grace period

A flaw was found in the Linux kernel's IPv4 networking subsystem. A race condition occurs during concurrent processing of retransmitted Transmission Control Protocol TCP connection requests or socket migrations, allowing socket options to be freed while still in use. A remote attacker could explo...

kernel: net/sched: ets: Always remove class from active list before deleting in ets_qdisc_change

In the Linux kernel, the following vulnerability has been resolved: net/sched: ets: Always remove class from active list before deleting in etsqdiscchange [email protected] says: The vulnerability is a race condition between etsqdiscdequeue and etsqdiscchange. It leads to UAF on stru...

kernel: nvme-tcp: fix host memory disclosure on R2T for a read command

A flaw was found in the Linux kernel's NVMe Non-Volatile Memory Express over TCP nvme-tcp component. A malicious NVMe controller can exploit this vulnerability by sending a Ready to Transfer R2T command for a read request. The host system, failing to properly validate the request direction, will...

kernel: nvmet-tcp: check INIT_FAILED before nvmet_req_uninit in digest error path

A flaw was found in the Linux kernel's NVMe over TCP target nvmet-tcp implementation. When a data digest mismatch is detected, nvmetrequninit is called unconditionally, but if the command was already in the INITFAILED state, the matching percpureftrygetlive was never performed. The resulting...

kernel: Bluetooth: hci_sync: Set HCI_CMD_DRAIN_WORKQUEUE during device close

A flaw was found in the Bluetooth hcisync component of the Linux kernel. When the hcidevclosesync function is called during a device reset, the system may experience queuing timeouts. This occurs because the HCICMDDRAINWORKQUEUE flag is not properly set, which can lead to system instability or a...

kernel: xfrm: Duplicate SPI Handling

In the Linux kernel, the following vulnerability has been resolved: xfrm: Duplicate SPI Handling The issue originates when Strongswan initiates an XFRMMSGALLOCSPI Netlink message, which triggers the kernel function xfrmallocspi. This function is expected to ensure uniqueness of the Security...

CVE-2026-99270 tcp: Fix potential UAF in reqsk_timer_handler().

In the Linux kernel, the following vulnerability has been resolved: tcp: Fix potential UAF in reqsktimerhandler. When TCP socket migration fails at inetehashinsert in reqsktimerhandler, we jump to the noownership: label and free the new reqsk immediately with reqskfree. Thus, we must stop the new...

CVE-2026-99270 tcp: Fix potential UAF in reqsk_timer_handler().

In the Linux kernel, the following vulnerability has been resolved: tcp: Fix potential UAF in reqsktimerhandler. When TCP socket migration fails at inetehashinsert in reqsktimerhandler, we jump to the noownership: label and free the new reqsk immediately with reqskfree. Thus, we must stop the new...

EUVD-2026-115811

In the Linux kernel, the following vulnerability has been resolved: tcp: Fix potential UAF in reqsktimerhandler. When TCP socket migration fails at inetehashinsert in reqsktimerhandler, we jump to the noownership: label and free the new reqsk immediately with reqskfree. Thus, we must stop the new...

CVE-2026-99270

The Linux kernel contains a Use-After-Free (UAF) vulnerability within the reqsk_timer_handler() function of the tcp component. The issue occurs during TCP socket migration when inet_ehash_insert() fails; the system jumps to a no_ownership label and frees the new reqsk via __reqsk_free() without f...

kernel: nvmet-tcp: check INIT_FAILED before nvmet_req_uninit in digest error path

A flaw was found in the Linux kernel's NVMe over TCP target nvmet-tcp implementation. When a data digest mismatch is detected, nvmetrequninit is called unconditionally, but if the command was already in the INITFAILED state, the matching percpureftrygetlive was never performed. The resulting...

kernel: net/sched: ets: Always remove class from active list before deleting in ets_qdisc_change

In the Linux kernel, the following vulnerability has been resolved: net/sched: ets: Always remove class from active list before deleting in etsqdiscchange [email protected] says: The vulnerability is a race condition between etsqdiscdequeue and etsqdiscchange. It leads to UAF on stru...

kernel: HID: wacom: fix out-of-bounds read in wacom_intuos_bt_irq

A flaw was found in the Linux kernel's Wacom Human Interface Device HID driver. This vulnerability allows a remote attacker to trigger an out-of-bounds read by sending a specially crafted, short Bluetooth HID report. This can lead to the disclosure of sensitive information from the system's memor...

kernel: nvme-tcp: fix host memory disclosure on R2T for a read command

A flaw was found in the Linux kernel's NVMe Non-Volatile Memory Express over TCP nvme-tcp component. A malicious NVMe controller can exploit this vulnerability by sending a Ready to Transfer R2T command for a read request. The host system, failing to properly validate the request direction, will...

kernel: netfilter: synproxy: refresh tcphdr after skb_ensure_writable

A flaw was found in the Linux kernel's netfilter synproxy module. When handling TCP timestamp options, a stale pointer can be used after memory reallocation. This can result in memory corruption, where data is written to a freed memory area, or lead to packets being sent with an incorrect checksu...

kernel: dm cache policy smq: fix missing locks in invalidating cache blocks

A flaw was found in the Linux kernel's device-mapper dm cache policy, specifically within the smq module. In passthrough mode, the invalidatemapping operation lacks proper locking, allowing for concurrent access. This can lead to data races, resulting in data corruption or use-after-free issues,...

kernel: ipv4: free inet_opt and ireq_opt after an RCU grace period

A flaw was found in the Linux kernel's IPv4 networking subsystem. A race condition occurs during concurrent processing of retransmitted Transmission Control Protocol TCP connection requests or socket migrations, allowing socket options to be freed while still in use. A remote attacker could explo...

kernel: procfs: fix missing RCU protection when reading real_parent in do_task_stat()

A flaw was found in the Linux kernel's procfs component. When reading /proc/pid/stat, the dotaskstat function accesses task-realparent without proper Read-Copy-Update RCU protection. This missing protection creates a race condition, which can lead to a Use-After-Free UAF vulnerability. A local...

kernel: Bluetooth: hci_ldisc: Clear HCI_UART_PROTO_INIT on error

A flaw was found in the Linux kernel's Bluetooth Host Controller Interface HCI Universal Asynchronous Receiver/Transmitter UART driver. When the hciregisterdev function fails, a flag indicating protocol initialization is not properly cleared. This oversight allows incoming UART data to be process...

DEBIAN-CVE-2026-99269

In the Linux kernel, the following vulnerability has been resolved: schedext: Wait for SCXOPSSDISPATCHING before moving tasks off DSQs A task can be found on a non-local DSQ while the CPU which dispatched it is still running ops.dequeue and hasn't cleared SCXOPSSDISPATCHING. The DSQ consume and...