SUSE-SU-2026:23489-1 Security update for the Linux Kernel (Live Patch 27 for SUSE Linux Enterprise Micro 6.0)

This update for the SUSE Linux Enterprise Kernel 6.4.0-50.2 fixes various security issues: The following security issues were fixed: - CVE-2026-53224: sctp: validate embedded INIT chunk and address list lengths in cookie bsc1270023. - CVE-2026-53246: sctp: validate cached peer INIT chunk length i...

kernel: Bluetooth: ISO: fix UAF in iso_recv_frame

A flaw was found in the Linux kernel's Bluetooth ISO Isochronous Stream subsystem. This vulnerability, known as a Use-After-Free, occurs because the system attempts to use a memory area after it has been released, which can lead to unpredictable behavior. A malicious actor could potentially explo...

kernel: Bluetooth: serialize accept_q access

A flaw was found in the Linux kernel's Bluetooth subsystem. A race condition exists in the handling of the acceptq within the btsockpoll function due to a lack of synchronization. This could allow a local attacker to cause a denial of service by manipulating socket operations during child teardow...

kernel: net: pull headers in qdisc_pkt_len_segs_init()

A flaw was found in the Linux kernel's handling of Generic Segmentation Offload GSO packet headers. This vulnerability occurs when the qdiscpktlensegsinit function does not properly pull headers into the expected memory location, which can lead to incorrect processing by network drivers. A remote...

kernel: Bluetooth: hci_sync: reject oversized Broadcast Announcement prepend

A flaw was found in the Bluetooth subsystem of the Linux kernel, specifically within the hcisync component. This vulnerability occurs when the hciadvbcastannoucement function attempts to prepend Broadcast Announcement service data to an existing advertising payload that is already at its maximum...

kernel: Bluetooth: RFCOMM: hold listener socket in rfcomm_connect_ind()

A flaw was found in the Linux kernel's Bluetooth RFCOMM Radio Frequency Communication subsystem. A race condition in the rfcommconnectind function, specifically during the handling of listener sockets, can lead to a use-after-free vulnerability. A local attacker could exploit this to cause a deni...

kernel: Bluetooth: L2CAP: Fix possible crash on l2cap_ecred_conn_rsp

A flaw was found in the Bluetooth L2CAP Logical Link Control and Adaptation Protocol component of the Linux kernel. When a device receives a connection response with an already-assigned destination Channel Identifier CID, the system may crash. This occurs because the kernel's procedure for...

kernel: ixgbevf: fix use-after-free in VEPA multicast source pruning

A flaw was found in the Linux kernel's ixgbevf network driver. This vulnerability, a use-after-free, occurs when the driver attempts to process network packets for a specific multicast workaround. An attacker could potentially exploit this by sending specially crafted network traffic, which may...

kernel: Bluetooth: RFCOMM: validate skb length in MCC handlers

A flaw was found in the Linux kernel's Bluetooth RFCOMM Radio Frequency Communication subsystem. A malicious remote device could exploit this vulnerability by sending specially crafted, truncated Multiplexing Control Channel MCC frames. This lack of proper validation of incoming data length befor...

kernel: dm-verity: fix buffer overflow in FEC calculation

A flaw was found in the dm-verity component of the Linux kernel. A buffer overflow occurs during Forward Error Correction FEC calculation, allowing an attacker to write past the end of an allocated buffer. This out-of-bounds write can corrupt the syndrome buffer, potentially leading to system...

kernel: wifi: nl80211: reject oversized EMA RNR lists

A flaw was found in the Linux kernel's nl80211 Wi-Fi subsystem. The nl80211parsernrelems function, responsible for parsing EMA RNR Enhanced Multiple Access Reduced Neighbor Report lists, does not properly handle an excessive number of nested NL80211ATTREMARNRELEMS inputs. This improper input...

kernel: wifi: iwlwifi: mld: fix TSO segmentation explosion when AMSDU is disabled

A flaw was found in the Linux kernel's iwlwifi MLD driver. When the Aggregated MAC Service Data Unit AMSDU feature is disabled, the driver incorrectly processes Transmit Segmentation Offload TSO requests. This can lead to a flood of micro-frames on the transmit ring, resulting in memory corruptio...

kernel: net: qrtr: fix refcount saturation and potential UAF in qrtr_port_remove

A flaw was found in the Linux kernel's qrtr network subsystem. A race condition exists in the qrtrportremove function where the socket reference count is decremented prematurely. This allows a concurrent reader to access a socket whose reference count has dropped to zero, potentially leading to a...

kernel: wifi: mac80211: capture fast-RX rate before mesh reuses skb->cb

A flaw was found in the Linux kernel's mac80211 Wi-Fi subsystem. This use-after-free vulnerability arises from incorrect handling of fast-RX rate data during mesh processing. This can lead to memory corruption, which an attacker could potentially exploit to cause a system crash denial of service...

kernel: nvmet-rdma: handle inline data with a nonzero offset

A flaw was found in the nvmet-rdma component of the Linux kernel. This vulnerability arises from incorrect handling of inline data with a non-zero offset, which can lead to an integer underflow. An attacker could exploit this to cause the system to read beyond its allocated memory, potentially...

kernel: Bluetooth: SMP: force responder MITM requirements before building the pairing response

A flaw was found in the Linux kernel's Bluetooth Security Manager Protocol SMP. An attacker could exploit this vulnerability during the Bluetooth pairing process by manipulating authentication requirements. This could lead to the selection of a weaker pairing method than intended, potentially...

kernel: vfio/pci: Check BAR resources before exporting a DMABUF

A flaw was found in the Linux kernel's vfio/pci subsystem. This vulnerability occurs because the Direct Memory Access Buffer DMABUF export mechanism does not adequately verify if Base Address Register BAR resources are properly reserved before allowing access. A local attacker could exploit this ...

kernel: Bluetooth: hci_sync: fix UAF in hci_le_create_cis_sync

A flaw was found in the Linux kernel's Bluetooth subsystem. This vulnerability, a Use-After-Free UAF, allows an attacker to access memory after it has been freed. This can lead to a system crash, resulting in a Denial of Service DoS, or potentially enable an attacker to execute malicious code. Th...

kernel: Bluetooth: HIDP: fix missing length checks in hidp_input_report()

A flaw was found in the Linux kernel's Bluetooth Human Interface Device Protocol HIDP. A remote attacker, by sending specially crafted truncated packets from a paired Bluetooth device, could trigger an out-of-bounds read in the hidpinputreport function. This vulnerability may lead to unintended...

kernel: security/keys: fix missed RCU read section on lookup

A flaw was found in the Linux kernel's keyring code. The assocarrayfind function, used for looking up keys, was called without holding the necessary Read-Copy-Update RCU read lock. This oversight allows for a memory corruption vulnerability, particularly affecting persistent key handling, as the...