kernel: network backend may cause Linux netfront to use freed SKBs (XSA-405)

An incomplete cleanup flaw was found in the Linux kernel’s Xen networking XDP eXpress Data Path subsystem. This flaw allows a local user to crash the system...

kernel: net/tunnel: wait until all sk_user_data reader finish before releasing the sock

In the Linux kernel, the following vulnerability has been resolved: net/tunnel: wait until all skuserdata reader finish before releasing the sock There is a race condition in vxlan that when deleting a vxlan device during receiving packets, there is a possibility that the sock is released after...

kernel: skmsg: pass gfp argument to alloc_sk_msg()

A denial of service exists in the pass gfp argument to allocskmsg of the linux kernel, such that an attacker creating a specially crafted payload could result in damage to system availability...

kernel: tipc: fix a null-ptr-deref in tipc_topsrv_accept

In the Linux kernel, the following vulnerability has been resolved: tipc: fix a null-ptr-deref in tipctopsrvaccept syzbot found a crash in tipctopsrvaccept: KASAN: null-ptr-deref in range 0x0000000000000008-0x000000000000000f Workqueue: tipcrcv tipctopsrvaccept RIP: 0010:kernelaccept+0x22d/0x350...

kernel: Kernel: Denial of Service via memory leak in wifi power saving mode

A flaw was found in the Linux kernel's wifi driver. Under power saving mode, the driver fails to properly free unused socket buffers skb, leading to a memory leak. A local attacker could exploit this vulnerability to cause a Denial of Service DoS by exhausting system memory...

kernel: denial of service in tipc_conn_close

A data race flaw was found in the Linux kernel, between where con is allocated and con-sock is set. This issue leads to a NULL pointer dereference when accessing con-sock-sk in net/tipc/topsrv.c in the tipc protocol in the Linux kernel...

kernel: scsi: iscsi: iscsi_tcp: Fix null-ptr-deref while calling getpeername()

A flaw was found in the iSCSI TCP component in the Linux kernel. A race condition between releasing a socket and accessing it via sysfs can lead to a NULL pointer dereference when calling getpeername. This issue can cause a crash and result in a denial of service...

kernel: l2tp: close all race conditions in l2tp_tunnel_register()

In the Linux kernel, the following vulnerability has been resolved: l2tp: close all race conditions in l2tptunnelregister The code in l2tptunnelregister is racy in several ways: 1. It modifies the tunnel socket after publishing it. 2. It calls setupudptunnelsock on an existing socket without...

kernel: Kernel: Denial of Service via recursive deadlock in L2TP tunnel registration

A flaw was found in the kernel. A local user can exploit this vulnerability by passing a pppol2tp socket file descriptor as a UDP socket file descriptor during L2TP tunnel registration. This can cause a recursive deadlock, leading to a denial of service DoS on the system...

kernel: net: fix refcount bug in sk_psock_get (2)

In the Linux kernel, the following vulnerability has been resolved: net: fix refcount bug in skpsockget 2 Syzkaller reports refcount bug as follows: ------------ cut here ------------ refcountt: saturated; leaking memory. WARNING: CPU: 1 PID: 3605 at lib/refcount.c:19...

kernel: can: etas_es58x: es58x_rx_err_msg(): fix memory leak in error path

In the Linux kernel, the following vulnerability has been resolved: can: etases58x: es58xrxerrmsg: fix memory leak in error path In es58xrxerrmsg, if can-dosetmode fails, the function directly returns without calling netifrxskb. This means that the skb previously allocated by alloccanerrskb is no...

kernel: scsi: target: iscsi: Fix a race condition between login_work and the login thread

A flaw was found in the iSCSI target component in the Linux kernel. An attacker that can send specific data immediately after a login Protocol Data Unit PDU, can trigger a race condition. This condition can lead to a NULL pointer dereference, causing the kernel to crash and resulting in a denial ...

kernel: Bluetooth: L2CAP: Fix memory leak in vhci_write

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix memory leak in vhciwrite Syzkaller reports a memory leak as follows: ==================================== BUG: memory leak unreferenced object 0xffff88810d81ac00 size 240: ... hex dump first 32 bytes: 00 00 ...

kernel: bpf, sockmap: Fix double uncharge the mem of sk_msg

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Fix double uncharge the mem of skmsg If tcpbpfsendmsg is running during a tear down operation, psock may be freed. tcpbpfsendmsg tcpbpfsendverdict skmsgreturn tcpbpfsendmsgredir unlikely!psock skmsgfree The mem of m...

kernel: can: m_can: m_can_tx_handler(): fix use after free of skb

In the Linux kernel, the following vulnerability has been resolved: can: mcan: mcantxhandler: fix use after free of skb canputechoskb will clone skb then free the skb. Move the canputechoskb for the mcan version 3.0.x directly before the start of the xmit in hardware, similar to the 3.1.x branch...

kernel: bpf, sockmap: Fix memleak in sk_psock_queue_msg

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Fix memleak in skpsockqueuemsg If tcpbpfsendmsg is running during a tear down operation we may enqueue data on the ingress msg queue while tear down is trying to free it. sk1 redirect sk2 sk2 -------------------...

kernel: denial of service in tipc_conn_close

A data race flaw was found in the Linux kernel, between where con is allocated and con-sock is set. This issue leads to a NULL pointer dereference when accessing con-sock-sk in net/tipc/topsrv.c in the tipc protocol in the Linux kernel...

kernel: igmp: use-after-free in ip_check_mc_rcu when opening and closing inet sockets

A use-after-free flaw was found in the Linux kernel’s IGMP protocol in how a user triggers a race condition in the ipcheckmcrcu function. This flaw allows a local user to crash or potentially escalate their privileges on the system...

kernel: network backend may cause Linux netfront to use freed SKBs (XSA-405)

An incomplete cleanup flaw was found in the Linux kernel’s Xen networking XDP eXpress Data Path subsystem. This flaw allows a local user to crash the system...

PT-2023-2694 · Microsoft · Windows

Name of the Vulnerable Software and Affected Versions: Windows Secure Socket Tunneling Protocol SSTP affected versions not specified Description: The issue is related to errors in synchronization when using a shared resource in the implementation of the Secure Socket Tunneling Protocol SSTP in th...