CVE-2026-16515 ICMPv6 error messages sent for multicast-destined packets and non-unique source addresses enable network amplification in Zephyr's IPv6 stack

neticmpv6senderror in subsys/net/ip/icmpv6.c implemented only one of the three RFC 4443 section 2.4 suppression rules do not answer an ICMPv6 error with an ICMPv6 error. It did not check whether the triggering packet's source address identifies a single node rule e.6 or whether the packet was sen...

CVE-2026-16512

gptphandlemsg in subsys/net/l2/ethernet/gptp/gptp.c dereferenced the gPTP header returned by GPTPHDR and switched on hdr-messagetype without first checking that the received frame carries at least sizeofstruct gptphdr 34 bytes of payload. The header accessor gptpgethdr deliberately never fails fo...

PT-2026-95409

Name of the Vulnerable Software and Affected Versions The product name cannot be determined affected versions not specified Description An out-of-bounds read exists in the gptp mi qualify announce function within subsys/net/l2/ethernet/gptp/gptp mi.c. The issue occurs when processing the Path Tra...

PT-2026-95410

Name of the Vulnerable Software and Affected Versions Zephyr affected versions not specified Description The net icmpv6 send error function in subsys/net/ip/icmpv6.c fails to implement all RFC 4443 section 2.4 suppression rules, which dictate that an ICMPv6 error should not be answered with anoth...

CVE-2026-16515: Insufficient Control of Network Message Volume (Network Amplification)

neticmpv6senderror in subsys/net/ip/icmpv6.c implemented only one of the three RFC 4443 section 2.4 suppression rules do not answer an ICMPv6 error with an ICMPv6 error. It did not check whether the triggering packet's source address identifies a single node rule e.6 or whether the packet was sen...

PT-2026-94554

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A race condition exists between the nvmet subsys attr qid max store and nvmet alloc ctrl functions when the max qid limit of a subsystem is modified. If a userspace process updates max q...

CVE-2026-15893: Reachable Assertion

netifipv6calcreachabletime in subsys/net/ip/netif.c derives a randomized ND reachable time from ipv6-basereachabletime as minreachable + sysrand32get % maxreachable - minreachable, where minreachable = base/2 and maxreachable = 3base/2 using integer division. When basereachabletime is 1, both...

CVE-2026-15924: Use After Free

Zephyr's TLS socket layer in subsys/net/lib/sockets/socketstls.c keeps a single process-global array, clientcache, of cached client sessions that is shared by every TLS socket context. The functions that mutate and read it — tlssessionsave, tlssessionget, tlssessioncachereset, and the settings...

CVE-2026-15923: Loop with Unreachable Exit Condition

The Zephyr SDIO subsystem function sdioiorwextendedhelper in subsys/sd/sdio.c finishes transfers with a byte-I/O loop that uses size = MINremaining, func-cis.maxblksize as the per-iteration step. The value func-cis.maxblksize is decoded directly from the SDIO card's CIS FUNCE tuple in sdiodecodec...

CVE-2026-13481

The IEEE 1588 PTP management-message parser in subsys/net/lib/ptp/tlv.c mishandles the PTPMGMTTIME management id. In tlvmgmtpostrecv, the PTPMGMTTIME case casts mgmttlv-data to a 10-byte struct ptptimestamp and reads it then byte-swaps and writes it back without first checking that the TLV data...

CVE-2026-13480

The LoRaWAN TS004 Fragmented Data Block Transport handler fragtransportpackagecallback in subsys/lorawan/services/fragtransport.c parses downlink command bytes without validating that enough payload bytes remain before each access. The loop's only bound is rxpos fragsize, capped at...

CVE-2026-13480: Improper Input Validation

The LoRaWAN TS004 Fragmented Data Block Transport handler fragtransportpackagecallback in subsys/lorawan/services/fragtransport.c parses downlink command bytes without validating that enough payload bytes remain before each access. The loop's only bound is rxpos fragsize, capped at...

CVE-2026-13217: NULL Pointer Dereference

The OCPP 1.6 client in subsys/net/lib/ocpp/ocpp.c reconstructs a session handle and PDU id from the uid field of a CALLRESULT message. In ocppprocessservermsg the code calls atoistrtokruid, "-", &tmp without checking the strtokr return value. When the server-supplied uid is empty or contains no -...

CVE-2026-13213

The Hearing Access Service HAS GATT server in subsys/bluetooth/audio/has.c installs a connection-callback set unconditionally via BTCONNCBDEFINE, so securitychanged runs for every connection that establishes security even before the application has called bthasregister. The service attribute...

CVE-2026-13213: NULL Pointer Dereference

The Hearing Access Service HAS GATT server in subsys/bluetooth/audio/has.c installs a connection-callback set unconditionally via BTCONNCBDEFINE, so securitychanged runs for every connection that establishes security even before the application has called bthasregister. The service attribute...

CVE-2026-12633

The IPv6 neighbor-discovery code in subsys/net/ip/ipv6nbr.c processes the 6LoWPAN Context Option 6CO, RFC 6775 carried inside ICMPv6 Router Advertisements. In handlera6co the 8-bit contextlen field is taken directly from the packet and was never bounded to the RFC maximum of 128. The function...

CVE-2026-12634: Out-of-bounds Write

The NVS backend of the Zephyr settings subsystem subsys/settings/src/settingsnvs.c reads stored setting-name entries into fixed 74-byte stack buffers and NUL-terminates them with bufrc = '\0', where rc is the return value of nvsread. Per its contract, nvsread returns the full stored entry length...

CVE-2026-12632: Out-of-bounds Read

Zephyr's Precision Time Protocol receive handler ptpmsgpostrecv in subsys/net/lib/ptp/msg.c takes the 4-bit message type straight off the wire via ptpmsgtype msg-header.typemajorsdoid & 0xF, range 0-15 and uses it to index the msgsize table. That table only defines entries up to PTPMSGMANAGEMENT...

CVE-2026-12630: Out-of-bounds Read

Zephyr's 6LoWPAN IP Header Compression IPHC uncompression code contains an out-of-bounds read in getihpcinlinedsize subsys/net/ip/6lo.c. The destination inline size is looked up in dainlinesizetable, which has 13 entries, using an index built from the M, DAC and DAM bits of the received IPHC...

CVE-2026-12364

The user-space system-call verifier zvrfyzlogmsgstaticcreate in subsys/logging/logmsg.c was a pure pass-through: it forwarded the caller-supplied source, desc, package, and data arguments directly to the kernel-mode implementation zimplzlogmsgstaticcreate without performing any of the mandatory...