CVE-2026-10651

A malformed Bluetooth Classic SDP attribute can trigger a reachable assertion in Zephyr's SDP parser. In subsys/bluetooth/host/classic/sdp.c, btsdpparseattribute accepts an input buffer once it contains the 1-byte attribute type and 2-byte attribute id, but then unconditionally pulls an additiona...

CVE-2026-10645

Zephyr's ext2 directory-entry parser does not fully validate on-disk directory entry structure before copying the entry name and advancing traversal state. In ext2fetchdirentry subsys/fs/ext2/ext2diskops.c, the code only checks denamelen = EXT2MAXFILENAME and then copies the name with memcpy...

CVE-2026-10658

A missing length validation in the Zephyr Bluetooth Host ISO receive path can be triggered by malformed HCI ISO data. In btisorecv subsys/bluetooth/host/iso.c, when processing PB=START/SINGLE fragments, the code pulls a TS SDU header 8 bytes, ts=1 or a non-TS SDU header 4 bytes, ts=0 without firs...

UBUNTU-CVE-2026-10658

A missing length validation in the Zephyr Bluetooth Host ISO receive path can be triggered by malformed HCI ISO data. In btisorecv subsys/bluetooth/host/iso.c, when processing PB=START/SINGLE fragments, the code pulls a TS SDU header 8 bytes, ts=1 or a non-TS SDU header 4 bytes, ts=0 without firs...

UBUNTU-CVE-2026-10651

A malformed Bluetooth Classic SDP attribute can trigger a reachable assertion in Zephyr's SDP parser. In subsys/bluetooth/host/classic/sdp.c, btsdpparseattribute accepts an input buffer once it contains the 1-byte attribute type and 2-byte attribute id, but then unconditionally pulls an additiona...

CVE-2026-10658

CVE-2026-10658 affects Zephyr’s Bluetooth Host ISO RX path, specifically bt_iso_recv() in subsys/bluetooth/host/iso.c. The vulnerability arises from missing minimum length checks for SDU headers when processing PB=START/SINGLE, allowing a malformed HCI ISO payload to bypass the inner header lengt...

CVE-2026-10658 Bluetooth Host ISO RX Missing SDU Header Length Validation in bt_iso_recv() Leads to DoS

A missing length validation in the Zephyr Bluetooth Host ISO receive path can be triggered by malformed HCI ISO data. In btisorecv subsys/bluetooth/host/iso.c, when processing PB=START/SINGLE fragments, the code pulls a TS SDU header 8 bytes, ts=1 or a non-TS SDU header 4 bytes, ts=0 without firs...

CVE-2026-10651

A malformed Bluetooth Classic SDP attribute can trigger a reachable assertion in Zephyr's SDP parser. In subsys/bluetooth/host/classic/sdp.c, btsdpparseattribute accepts an input buffer once it contains the 1-byte attribute type and 2-byte attribute id, but then unconditionally pulls an additiona...

CVE-2026-10651 Bluetooth Classic SDP parser truncation bug in bt_sdp_parse_attribute() leads to reachable assertion and possible out-of-bounds read

A malformed Bluetooth Classic SDP attribute can trigger a reachable assertion in Zephyr's SDP parser. In subsys/bluetooth/host/classic/sdp.c, btsdpparseattribute accepts an input buffer once it contains the 1-byte attribute type and 2-byte attribute id, but then unconditionally pulls an additiona...

CVE-2026-10645 fs: ext2: Missing structural validation of directory entries can cause out-of-bounds read and zero-progress directory traversal

Zephyr's ext2 directory-entry parser does not fully validate on-disk directory entry structure before copying the entry name and advancing traversal state. In ext2fetchdirentry subsys/fs/ext2/ext2diskops.c, the code only checks denamelen = EXT2MAXFILENAME and then copies the name with memcpy...

CVE-2026-10641

Zephyr's Bluetooth Classic Hands-Free Profile HFP Hands-Free role parser subsys/bluetooth/host/classic/hfphf.c contains an out-of-bounds write. During Service Level Connection setup the HF sends AT+CIND=? and parses the AG's +CIND: response in cindhandle, which assigns a per-entry counter index a...

CVE-2026-10641 Out-of-bounds write in Bluetooth HFP Hands-Free CIND indicator parsing (cind_handle_values)

Zephyr's Bluetooth Classic Hands-Free Profile HFP Hands-Free role parser subsys/bluetooth/host/classic/hfphf.c contains an out-of-bounds write. During Service Level Connection setup the HF sends AT+CIND=? and parses the AG's +CIND: response in cindhandle, which assigns a per-entry counter index a...

EUVD-2026-37702

Zephyr's Bluetooth Classic Hands-Free Profile HFP Hands-Free role parser subsys/bluetooth/host/classic/hfphf.c contains an out-of-bounds write. During Service Level Connection setup the HF sends AT+CIND=? and parses the AG's +CIND: response in cindhandle, which assigns a per-entry counter index a...

CVE-2026-10641

Zephyr Bluetooth Classic HFP HF CIND parser (subsys/bluetooth/host/classic/hfp_hf.c) contains an out-of-bounds write during +CIND=?/+CIND: handling. cind_handle_values() writes hf-ind_table[index] = i without verifying index is within the 20-element int8_t ind_table[]. A remote attacker could sen...

CVE-2026-10640

Zephyr's IPv6 Neighbor Discovery send paths netipv6sendna, netipv6sendns, netipv6sendrs in subsys/net/ip/ipv6nbr.c updated the per-interface ICMP-sent statistics by calling netpktifacepkt after netsenddatapkt had already returned successfully. On the success path the network stack owns and releas...

CVE-2026-10639

In Zephyr's native IPv4 stack, icmpv4handleechorequest in subsys/net/ip/icmpv4.c builds an echo-reply packet reply, hands it to nettrysenddata, and then, on success, calls netstatsupdateicmpsentnetpktifacereply. nettrysenddata transfers ownership of reply to the TX path netiftryqueuetx - netiftx ...

CVE-2026-10636

In Zephyr's IPv4 IGMP implementation, igmpsend in subsys/net/ip/igmp.c read the network interface back out of the packet via netpktifacepkt after the packet had been handed to netsenddata. On the successful-send path the packet's last reference may already have been released by the L2 driver or b...

CVE-2026-10640

Zephyr IPv6 Neighbor Discovery (ipv6_nbr.c) contains a use-after-free in the per-interface ICMP stats update. After net_send_data(pkt) succeeds, net_pkt_iface(pkt) may dereference an iface pointer from a freed net_pkt, causing iface-stats.icmp.sent to be incremented from freed memory (CWE-416). T...

CVE-2026-10638 Use-after-free in Zephyr ICMPv6 RX path when updating statistics after sending an echo reply or error

subsys/net/ip/icmpv6.c reads the network interface from a netpkt after that packet has been handed to nettrysenddata. In icmpv6handleechorequest and neticmpv6senderror, the post-send statistics update calls netpktifacereply/netpktifacepkt on the just-sent packet. The send path nettrysenddata -...

CVE-2026-10638

CVE-2026-10638 affects Zephyr Networking: ICMPv6 RX path can use a freed net_pkt when updating statistics after sending an echo reply or error. The code reads iface pointers post-send in icmpv6_handle_echo_request() and net_icmpv6_send_error(); if no TX queue or driver/L2 frees the packet, net_pk...