| CVE |
Vendors |
Products |
Updated |
CVSS v3.1 |
| Use after free in Microsoft Office allows an unauthorized attacker to execute code locally. |
| Use after free in Microsoft Windows DNS allows an unauthorized attacker to elevate privileges over a network. |
| Use after free in Windows Runtime allows an authorized attacker to elevate privileges locally. |
| Use after free in Windows Kernel allows an unauthorized attacker to elevate privileges locally. |
| Use after free in Remote Desktop Client allows an unauthorized attacker to execute code over a network. |
| Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Runtime allows an unauthorized attacker to elevate privileges over a network. |
| Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Media allows an authorized attacker to elevate privileges over a network. |
| Concurrent execution using shared resource with improper synchronization ('race condition') in Windows LUAFV allows an authorized attacker to elevate privileges locally. |
| Use after free in Windows Runtime allows an authorized attacker to elevate privileges locally. |
| Use after free in Windows Media allows an authorized attacker to elevate privileges locally. |
| Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Media allows an authorized attacker to elevate privileges locally. |
| Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Audio Service allows an authorized attacker to elevate privileges locally. |
| Use after free in Windows Unified Consent System allows an authorized attacker to elevate privileges locally. |
| Use after free in Windows TCP/IP allows an authorized attacker to elevate privileges locally. |
| Use after free in Reliable Multicast Transport Driver (RMCAST) allows an unauthorized attacker to execute code over a network. |
| Use after free in Windows USB Print Driver allows an unauthorized attacker to elevate privileges with a physical attack. |
| Use after free in Windows App Installer allows an authorized attacker to elevate privileges locally. |
| Use after free in Windows Storage allows an authorized attacker to elevate privileges locally. |
| Use after free in Windows Hyper-V allows an authorized attacker to elevate privileges locally. |
| Zephyr's BSD-sockets getaddrinfo() implementation (subsys/net/lib/sockets/getaddrinfo.c) passes a pointer to a stack-allocated state object (struct getaddrinfo_state ai_state) as the user_data of an asynchronous DNS resolver query. The socket layer waits on a semaphore with a timeout deliberately set slightly longer than the resolver's own per-query timeout. When that semaphore wait nonetheless times out (-EAGAIN) - which can occur when the resolver's timeout work is delayed by workqueue contention, or in the documented multi-retry configuration where CONFIG_NET_SOCKETS_DNS_TIMEOUT exceeds CONFIG_NET_SOCKETS_DNS_BACKOFF_INTERVAL - the pre-fix code retries the query (goto again) without cancelling the previous one and without resetting the semaphore.
The previous query slot remains active in the resolver with its callback and the stack pointer as user_data, and ai_state->dns_id is overwritten so the stale query can no longer be cancelled. A subsequent DNS response delivered over UDP and matched by its 16-bit transaction id (in dispatcher_cb()/dns_read()), or the resolver's own delayed query-timeout work, then invokes dns_resolve_cb() against the now out-of-scope stack frame, writing through the stale pointer (state->status, state->idx, state->ai_arr[], and k_sem_give()).
Because the triggering response is network-delivered and its 16-bit id is spoofable/replayable by an on- or off-path attacker, this is a network-influenceable use-after-return that can corrupt reused stack memory, leading to crashes/denial of service or memory corruption.
The fix cancels the timed-out query by name and type before retrying and resets the local semaphore, eliminating the stale callback path. Affected: Zephyr v4.0.0 through v4.4.0. |
