kernel: ipv4: validate checksum_start before completing checksum

A flaw was found in the Linux kernel. A local attacker or untrusted guest virtual machine can exploit this vulnerability by transmitting network packets containing malformed checksum metadata into the IPv4 networking subsystem. This failure to validate checksum metadata can corrupt memory during...

kernel: tcp: fix stale per-CPU tcp_tw_isn leak enabling ISN prediction

A flaw was found in the Linux kernel's Transmission Control Protocol TCP networking stack. This vulnerability arises from a stale per-CPU variable that can retain a previously used Initial Sequence Number ISN when certain packets are dropped. A remote attacker could exploit this by sending...

kernel: openvswitch: defer tunnel netdev_put to RCU release

A flaw was found in the Linux kernel's Open vSwitch OVS component. A race condition can occur during the destruction of a network device netdev tunnel, where the ovsnetdevtunneldestroy function may attempt to release a device reference while other parts of the system are still actively using it...

kernel: bridge: mcast: Fix a possible use-after-free when removing a bridge port

A flaw was found in the Linux kernel's bridge multicast functionality. Improper management of multicast contexts when a bridge port is removed can lead to a use-after-free vulnerability. This issue could allow a local attacker to cause a system crash, resulting in a denial of service...

kernel: USB: serial: mxuport: fix memory corruption with small endpoint

A flaw was found in the Linux kernel's USB serial mxuport driver. A malicious Universal Serial Bus USB device could exploit this vulnerability by reporting a bulk-out endpoint maximum packet size smaller than eight bytes. This can lead to user-controlled slab corruption, potentially allowing an...

kernel: exec: Cleanup POSIX timers right after de_thread()

A flaw was found in the Linux kernel. When a multi-threaded program sets up a per-thread timer and executes a new program that subsequently fails during startup, the kernel can free timer memory while it remains referenced in an active queue. A local user could exploit this vulnerability to trigg...

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: ipv4: raw: reject IP_HDRINCL packets with ihl < 5

A flaw was found in the Linux kernel's handling of IPv4 raw sockets. An unprivileged attacker with CAPNETRAW capabilities can craft and inject a malformed IPv4 packet with an invalid Internet Header Length IHL. This can lead to an out-of-bounds memory access when the packet is processed by certai...

kernel: perf: Fix addr_filter_ranges lifetime

A flaw was found in the Linux kernel's performance events perf subsystem. This vulnerability occurs because memory allocated for event address filters is released prematurely while still in active use by other kernel processes. A local user could exploit this use-after-free flaw during performanc...

kernel: usb: typec: tcpm: bound altmode_desc[] per iteration in svdm_consume_modes()

A flaw was found in the Linux kernel's USB Type-C Port Manager TCPM driver. A remote attacker, acting as a malicious USB-C port partner, could exploit an out-of-bounds write vulnerability in the svdmconsumemodes function. By sending an unsolicited 'Discover Modes ACK' with excessive data, the...

kernel: smb: client: fix OOB read/write from unvalidated DataOffset in coalesce_t2()

A flaw was found in the Linux kernel's Server Message Block SMB client. The coalescet2 function processes server-supplied DataOffset fields without proper validation against buffer boundaries. A remote attacker could exploit this by crafting malicious SMB responses. This could lead to out-of-boun...

kernel: ipv4: validate checksum_start before completing checksum

A flaw was found in the Linux kernel. A local attacker or untrusted guest virtual machine can exploit this vulnerability by transmitting network packets containing malformed checksum metadata into the IPv4 networking subsystem. This failure to validate checksum metadata can corrupt memory during...

kernel: ipv4: validate checksum_start before completing checksum

A flaw was found in the Linux kernel. A local attacker or untrusted guest virtual machine can exploit this vulnerability by transmitting network packets containing malformed checksum metadata into the IPv4 networking subsystem. This failure to validate checksum metadata can corrupt memory during...

SUSE-SU-2026:4776-1 Security update for the Linux Kernel (Live Patch 86 for SUSE Linux Enterprise 12 SP5)

This update for the SUSE Linux Enterprise Kernel 4.12.14-122.323 fixes various security issues: The following security issues were fixed: - CVE-2026-63887: scsi: target: iscsi: Bound iscsiencodetextoutput appends to rspbuf bsc1272386. - CVE-2026-68158: libceph: Fix multiplication overflow in...

CVE-2026-64603

A flaw was found in the Linux kernel's intel-hid driver. A race condition can occur in the ACPI Advanced Configuration and Power Interface notify handler when processing tablet-mode events on convertible or detachable devices. If two events are processed concurrently, the input device may be...

CVE-2026-64593

A flaw was found in the btrfs filesystem of the Linux kernel. A local user could trigger a system crash by attempting to perform a trim operation on a storage device that was previously unavailable but has since reconnected and is not writeable. This issue arises from a synchronization problem...

CVE-2026-64591

A flaw was found in the Linux kernel's Intel IOMMU driver. This issue occurs because the driver attempts to disable I/O Page Fault IOPF handling for devices that never had it enabled, specifically when Shared Virtual Addressing SVA is used on hardware that does not support the PCI Page Request...

CVE-2026-64590

A flaw was found in the Linux kernel's dma-buf subsystem, specifically within the udmabuf component. When the CONFIGDMAAPIDEBUGSG option is enabled, importing a udmabuf into a Direct Rendering Manager DRM driver can trigger a spurious warning about overlapping cacheline mappings. This occurs...

CVE-2026-89855

A flaw was found in the Linux kernel's scsi: qla2xxx component. A local attacker could exploit a race condition in the flash version read handler. By concurrently triggering a sysfs reset operation and other flash operations, an attacker could corrupt flash register reads. This could lead to data...

CVE-2026-89790

A flaw was found in the Linux kernel's IPv6 networking subsystem. A race condition can occur during IPv6 multipath route rebalancing, where a concurrent update can lead to a divide-by-zero error. This vulnerability can cause the kernel to crash, resulting in a Denial of Service DoS for the affect...