Siemens SIMATIC S7-1500 TM MFP Improper Update of Reference Count (CVE-2026-23296)

In the Linux kernel, the following vulnerability has been resolved: scsi: core: Fix refcount leak for tagsetrefcnt This leak will cause a hang when tearing down the SCSI host. For example, iscsid hangs with the following call trace: 130120.652718 scsiallocsdev: Allocation failure during SCSI...

Siemens SIMATIC S7-1500 TM MFP Improper Input Validation (CVE-2026-46214)

In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: fix accept queue count leak on transport mismatch virtiotransportrecvlisten calls skacceptqadded before vsockassigntransport. If vsockassigntransport fails or selects a different transport, the error path returns...

Siemens SIMATIC S7-1500 TM MFP Detection of Error Condition Without Action (CVE-2026-23317)

In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: Return the correct value in vmwtranslateptr functions Before the referenced fixes these functions used a lookup function that returned a pointer. This was changed to another lookup function that returned an error code...

Siemens SIMATIC S7-1500 TM MFP Improper Input Validation (CVE-2026-31407)

In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack: add missing netlink policy validations Hyunwoo Kim reports out-of-bounds access in sctp and ctnetlink. These attributes are used by the kernel without any validation. Extend the netlink policies accordingly...

Siemens SIMATIC S7-1500 TM MFP Improper Control of a Resource Through its Lifetime (CVE-2026-23253)

In the Linux kernel, the following vulnerability has been resolved: media: dvb-core: fix wrong reinitialization of ringbuffer on reopen dvbdvropen calls dvbringbufferinit when a new reader opens the DVR device. dvbringbufferinit calls initwaitqueuehead, which reinitializes the waitqueue list head...

Siemens SIMATIC S7-1500 TM MFP Improper Input Validation (CVE-2026-43080)

In the Linux kernel, the following vulnerability has been resolved: l2tp: Drop large packets with UDP encap syzbot reported a WARN on my patch series 1. The actual issue is an overflow of 16-bit UDP length field, and it exists in the upstream code. My series added a debug WARN with an overflow...

Siemens SIMATIC S7-1500 TM MFP Improper Input Validation (CVE-2026-46056)

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcievent: fix potential UAF in SSP passkey handlers hciconn lookup and field access must be covered by hdev lock in hciuserpasskeynotifyevt and hcikeypressnotifyevt, otherwise the connection can be freed concurrently...

Siemens SIMATIC S7-1500 TM MFP Deadlock (CVE-2026-23157)

In the Linux kernel, the following vulnerability has been resolved: btrfs: do not strictly require dirty metadata threshold for metadata writepages BUG There is an internal report that over 1000 processes are waiting at the ioscheduletimeout of balancedirtypages, causing a system hang and trigger...

Siemens SIMATIC S7-1500 TM MFP Integer Underflow (CVE-2026-31617)

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: fncm: validate minimum blocklen in ncmunwrapntb The blocklen read from the host-supplied NTB header is checked against ntbmax but has no lower bound. When blocklen is smaller than opts-ndpsize, the bounds check of:...

Siemens SIMATIC S7-1500 TM MFP Improper Input Validation (CVE-2026-31676)

In the Linux kernel, the following vulnerability has been resolved: rxrpc: only handle RESPONSE during service challenge Only process RESPONSE packets while the service connection is still in RXRPCCONNSERVICECHALLENGING. Check that state under statelock before running response verification and...

Siemens SIMATIC S7-1500 TM MFP Improper Input Validation (CVE-2026-45834)

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix null-ptr-deref in l2capsockstatechangecb Add the same NULL guard already present in l2capsockresumecb and l2capsockreadycb. This plugin only works with Tenable.ot. Please visit...

Siemens SIMATIC S7-1500 TM MFP Improper Input Validation (CVE-2026-46050)

In the Linux kernel, the following vulnerability has been resolved: md/raid10: fix deadlock with check operation and nowait requests When an array check is running it will raise the barrier at which point normal requests will become blocked and increment the nrpending value to signal there is wor...

Siemens SIMATIC S7-1500 TM MFP Improper Input Validation (CVE-2026-53080)

In the Linux kernel, the following vulnerability has been resolved: net/sched: clsfw: fix NULL dereference of 'old' filters before change Like pointed out by Sashiko 1, since commit ed76f5edccc9 'net: sched: protect filterchain list with filterchainlock mutex' TC filters are added to a shared blo...

Siemens SIMATIC S7-1500 TM MFP Improper Input Validation (CVE-2025-21830)

In the Linux kernel, the following vulnerability has been resolved: landlock: Handle weird files A corrupted filesystem e.g. bcachefs might return weird files. Instead of throwing a warning and allowing access to such file, treat them as regular files. This plugin only works with Tenable.ot. Plea...

Siemens SIMATIC S7-1500 TM MFP Improper Input Validation (CVE-2026-43099)

In the Linux kernel, the following vulnerability has been resolved: ipv4: icmp: fix null-ptr-deref in icmpbuildprobe ipv6stub-ipv6devfind may return ERRPTR-EAFNOSUPPORT when the IPv6 stack is not active CONFIGIPV6=m and not loaded, and passing this error pointer to devhold will cause a kernel cra...

Siemens SIMATIC S7-1500 TM MFP Improper Validation of Consistency within Input (CVE-2026-31709)

In the Linux kernel, the following vulnerability has been resolved: smb: client: validate the whole DACL before rewriting it in cifsacl buildsecdesc and idmodetocifsacl derive a DACL pointer from a server-supplied dacloffset and then use the incoming ACL to rebuild the chmod/chown security...

Siemens SIMATIC S7-1500 TM MFP Improper Input Validation (CVE-2026-52909)

In the Linux kernel, the following vulnerability has been resolved: ip6vti: set netnsimmutable on the fallback device. john1988 and Noam Rathaus reported that vti6initnet does not set the netnsimmutable flag on the per-netns fallback tunnel device ip6vti0. Other similar tunnel drivers like...

Siemens SIMATIC S7-1500 TM MFP Deadlock (CVE-2026-23357)

In the Linux kernel, the following vulnerability has been resolved: can: mcp251x: fix deadlock in error path of mcp251xopen The mcp251xopen function call freeirq in its error path with the mpclock mutex held. But if an interrupt already occurred the interrupt handler will be waiting for the mpclo...

Siemens SIMATIC S7-1500 TM MFP Improper Input Validation (CVE-2026-46167)

In the Linux kernel, the following vulnerability has been resolved: usb: usblp: fix uninitialized heap leak via LPGETSTATUS ioctl Just like in a previous problem in this driver, usblpctrlmsg will collapse the usbcontrolmsg return value to 0/-errno, discarding the actual number of bytes transferre...

Siemens SIMATIC S7-1500 TM MFP Improper Input Validation (CVE-2026-23444)

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: always free skb on ieee80211txprepareskb failure ieee80211txprepareskb has three error paths, but only two of them free the skb. The first error path ieee80211txprepare returning TXDROP does not free it, while...