Siemens SIMATIC S7-1500 TM MFP Improper Control of a Resource Through its Lifetime (CVE-2026-43503)

"In the Linux kernel, the following vulnerability has been resolved: net: skbuff: propagate shared-frag marker through frag-transfer helpers Two frag-transfer helpers pskbcopyfclone and skbshift fail to propagate the SKBFLSHAREDFRAG bit in skbshinfo-flags when moving frags from source to...

Siemens SIMATIC S7-1500 TM MFP Improper Input Validation (CVE-2026-46128)

In the Linux kernel, the following vulnerability has been resolved: ipmi: Check event message buffer response for bad data The event message buffer response data size got checked later when processing, but check it right after the response comes back. It appears some BMCs may return an empty...

Siemens SIMATIC S7-1500 TM MFP Improper Input Validation (CVE-2026-46180)

In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: Fix potential use-after-free issue when stopping watchdog task Watchdog task might end between sendsig and kthreadstop calls, what results in the use-after-free issue. Fix this by increasing watchdog task referenc...

Siemens SIMATIC S7-1500 TM MFP Improper Input Validation (CVE-2026-53256)

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: RFCOMM: hold listener socket in rfcommconnectind rfcommgetsockbychannel scans rfcommsklist under the list lock, but returns the selected listener after dropping that lock without taking a reference. rfcommconnectind th...

Siemens SIMATIC S7-1500 TM MFP Improper Input Validation (CVE-2026-53150)

In the Linux kernel, the following vulnerability has been resolved: thunderbolt: Reject zero-length property entries in validator tbpropertyentryvalid accepts entries with length == 0 for DIRECTORY, DATA, and TEXT types. A zero-length TEXT entry passes validation but causes an underflow in the...

Siemens SIMATIC S7-1500 TM MFP Improper Input Validation (CVE-2026-53254)

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: RFCOMM: validate skb length in MCC handlers The RFCOMM MCC handlers cast skb-data to protocol-specific structs without validating skb-len first. A malicious remote device can send truncated MCC frames and trigger...

Siemens SIMATIC S7-1500 TM MFP Improper Input Validation (CVE-2026-46177)

In the Linux kernel, the following vulnerability has been resolved: ipmi: Add limits to event and receive message requests The driver would just fetch events and receive messages until the BMC said it was done. To avoid issues with BMCs that never say they are done, add a limit of 10 fetches at a...

Siemens SIMATIC S7-1500 TM MFP Improper Input Validation (CVE-2026-46137)

In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: ADDADDR rtx: fix potential data-race This mptcppmaddtimer helper is executed as a timer callback in softirq context. To avoid any data races, the socket lock needs to be held with bhlocksock. If the socket is in use,...

Siemens SIMATIC S7-1500 TM MFP Improper Input Validation (CVE-2026-46151)

In the Linux kernel, the following vulnerability has been resolved: usb: usblp: fix heap leak in IEEE 1284 device ID via short response usblpctrlmsg collapses the usbcontrolmsg return value to 0/-errno, discarding the actual number of bytes transferred. A broken printer can complete the GETDEVICE...

Siemens SIMATIC S7-1500 TM MFP Improper Input Validation (CVE-2026-43110)

In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: validate bsscfg indices in IF events brcmffwehhandleifevent validates the firmware-provided interface index before it touches drvr-iflist, but it still uses the raw bsscfgidx field as an array index without a...

Siemens SIMATIC S7-1500 TM MFP Improper Input Validation (CVE-2026-23336)

In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: cancel rfkillblock work in wiphyunregister There is a use-after-free error in cfg80211shutdownallinterfaces found by syzkaller: BUG: KASAN: use-after-free in cfg80211shutdownallinterfaces+0x213/0x220 Read of size ...

Siemens SIMATIC S7-1500 TM MFP Improper Input Validation (CVE-2026-46107)

In the Linux kernel, the following vulnerability has been resolved: dm-thin: fix metadata refcount underflow There's a bug in dm-thin in the function rebalancechildren. If the internal btree node has one entry, the code tries to copy all btree entries from the node's child to the node itself and...

Siemens SIMATIC S7-1500 TM MFP Improper Input Validation (CVE-2026-46185)

In the Linux kernel, the following vulnerability has been resolved: smb/client: fix out-of-bounds read in symlinkdata Since smb2checkmessage returns success without length validation for the symlink error response, in symlinkdata it is possible for iov-iovlen to be smaller than sizeofstruct...

Siemens SIMATIC S7-1500 TM MFP Time-of-check Time-of-use (CVE-2026-46227)

In the Linux kernel, the following vulnerability has been resolved: sctp: revalidate list cursor after sctpsendmsgtoasoc in SCTPSENDALL The SCTPSENDALL path in sctpsendmsg iterates ep-asocs with listforeachentrysafe, which caches the next entry in @tmp before the loop body runs. The body calls...

Important: kernel security, bug fix, and enhancement update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: xfrm: espintcp: do not reuse an in-progress partial send CVE-2026-52935 kernel: USB: serial: ioti: fix heap overflow in getmanufinfo CVE-2026-53196 kernel: sctp: keep chunk-transport in...

Siemens SIMATIC S7-1500 TM MFP Improper Input Validation (CVE-2026-46047)

In the Linux kernel, the following vulnerability has been resolved: net: qrtr: ns: Fix use-after-free in driver remove In the remove callback, if a packet arrives after destroyworkqueue is called, but before sockrelease, the qrtrnsdataready callback will try to queue the work, causing...

ALSA-2026:85773 Important: kernel security, bug fix, and enhancement update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: xfrm: espintcp: do not reuse an in-progress partial send CVE-2026-52935 kernel: USB: serial: ioti: fix heap overflow in getmanufinfo CVE-2026-53196 kernel: sctp: keep chunk-transport in...

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...

Siemens SIMATIC S7-1500 TM MFP Improper Input Validation (CVE-2026-53131)

In the Linux kernel, the following vulnerability has been resolved: netfilter: require Ethernet MAC header before using ethhdr ip6teui64, xtmac, the bitmap:ip,mac, hash:ip,mac, and hash:mac ipset types, and nflogsyslog access ethhdrskb after either assuming that the skb is associated with an...

Siemens SIMATIC S7-1500 TM MFP Improper Input Validation (CVE-2026-31711)

"In the Linux kernel, the following vulnerability has been resolved: smb: server: fix activenumconn leak on transport allocation failure Commit 77ffbcac4e56 'smb: server: fix leak of activenumconn in ksmbdtcpnewconnection' addressed the kthreadrun failure path. The earlier alloctransport == NULL...