CVE Explorer
CVE-2026-10655
The asynchronous SNTP client in Zephyr (subsys/net/lib/sntp/sntp.c, sntp_close_async) closed the UDP socket file descriptor directly from the calling thread immediately after detaching it from the network socket service, without synchronizing with the socket-service poll thread.
The socket service thread polls each socket via zvfs_poll, which (in zsock_poll_prepare_ctx) registers a k_poll_event pointing into the socket's net_context (&ctx->recv_q) and then blocks in k_poll without holding a ref
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"collectionURL":"https://github.com/zephyrproject-rtos/zephyr","defaultStatus":"unaffected","packageName":"zephyr","product":"zephyr","programFiles":["subsys/net/lib/sntp/sntp.c"],"vendor":"zephyrproject","versions":[{"lessThan":"4.5.0","status":"affected","version":"4.2.0","versionType":"semver"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:fef204adf626952ac247a4f699fc52323833542cb9d2ff80bb507908495decb4 · sha256:f8dc8c85e689ba03… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"baseScore":6.5,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:fef204adf626952ac247a4f699fc52323833542cb9d2ff80bb507908495decb4 · sha256:f8dc8c85e689ba03… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-416","description":"use-after-free","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:fef204adf626952ac247a4f699fc52323833542cb9d2ff80bb507908495decb4 · sha256:f8dc8c85e689ba03… · /containers/cna/problemTypes/0/descriptions/0
Source references
2 source assertions{"name":"Fix commit","tags":["patch"],"url":"https://github.com/zephyrproject-rtos/zephyr/commit/ef47bdf328b4206ac3b3922ec09184f7a6f7412a"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:fef204adf626952ac247a4f699fc52323833542cb9d2ff80bb507908495decb4 · sha256:f8dc8c85e689ba03… · /containers/cna/references/0
{"name":"GHSA-34wr-cg29-c4mw","url":"https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-34wr-cg29-c4mw"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:fef204adf626952ac247a4f699fc52323833542cb9d2ff80bb507908495decb4 · sha256:f8dc8c85e689ba03… · /containers/cna/references/1
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.