| CVE |
Vendors |
Products |
Updated |
CVSS v3.1 |
| Zephyr's native TCP stack iterates the global connection list in net_tcp_foreach() (subsys/net/ip/tcp.c) using the SYS_SLIST_FOR_EACH_CONTAINER_SAFE macro, which caches a pointer to the next list node. Prior to this fix the function released tcp_lock while invoking the per-connection callback and re-acquired it afterwards.
During that window a concurrent tcp_conn_release(), running on the dedicated TCP work-queue thread when a connection's reference count drops to zero (e.g. a remote peer closing or resetting the connection), can remove and k_mem_slab_free() the cached next connection. When the iterator advances it dereferences the freed (and possibly reallocated) slab memory — a use-after-free that can crash the system (denial of service) and, if the slot has been reused, cause the callback to operate on an attacker-influenced object (potential information disclosure or further fault).
net_tcp_foreach() is reached in production via the net conn network shell command and via net_tcp_close_all_for_iface() on interface-down; the freeing side is driven by ordinary TCP traffic.
The fix moves the connection/context teardown in tcp_conn_release() inside the tcp_lock critical section and keeps tcp_lock held across the callback in net_tcp_foreach(). The defect was introduced with the modern (TCP2) stack in 2020 and affects releases up to and including v4.4.0. |
| Heap-based buffer overflow in Windows NTFS allows an authorized attacker to execute code locally. |
| Heap-based buffer overflow in Microsoft Office OneNote allows an unauthorized attacker to execute code locally. |
| Time-of-check time-of-use (toctou) race condition in Windows Network File System allows an authorized attacker to elevate privileges over a network. |
| Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Network File System allows an unauthorized attacker to execute code over a network. |
| Integer underflow (wrap or wraparound) in Microsoft Defender allows an unauthorized attacker to execute code locally. |
| Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code over a network. |
| Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally. |
| Heap-based buffer overflow in Windows Kernel allows an unauthorized attacker to elevate privileges with a physical attack. |
| Improper neutralization of special elements used in a command ('command injection') in Visual Studio Code allows an unauthorized attacker to execute code locally. |
| Deserialization of untrusted data in Microsoft Dynamics NAV allows an unauthorized attacker to execute code over a network. |
| A weakness has been identified in Totolink NR1800X 9.1.0u.6279_B20210910. Affected by this issue is the function Form_Logout of the file /formLogout.htm of the component lighttpd. This manipulation of the argument Host causes stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks. |
| Heap-based buffer overflow in Windows Message Queuing Queue Manager allows an unauthorized attacker to execute code locally. |
| Use of uninitialized resource in Windows RDP allows an unauthorized attacker to disclose information over a network. |
| Heap-based buffer overflow in Windows GDI+ allows an unauthorized attacker to execute code locally. |
| Use after free in Microsoft Printer Drivers allows an authorized attacker to elevate privileges locally. |
| Insufficient granularity of access control in Microsoft Exchange Server allows an authorized attacker to elevate privileges locally. |
| Improper authentication in Azure Spring Apps allows an authorized attacker to elevate privileges over a network. |
| Missing cryptographic step in Windows CryptoAPI allows an authorized attacker to perform tampering locally. |
| Null pointer dereference in Active Directory Domain Services allows an authorized attacker to deny service over a network. |
