CVE Explorer
CVE-2026-10677
The CONFIG_USERSPACE syscall verifier z_vrfy_k_poll() in kernel/poll.c allocates a kernel-side copy of the user-supplied k_poll_event[] via z_thread_malloc() and then validates each event's object handle. Before this fix, validation used K_OOPS(K_SYSCALL_OBJ(...)) inline inside the loop, which kills the calling thread without freeing events_copy.
A user thread can pass num_events >= 1 with a forged object handle to leak the allocation; because newly spawned user threads inherit the parent's res
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":["kernel/poll.c"],"vendor":"zephyrproject","versions":[{"lessThan":"4.5.0","status":"affected","version":"1.12.0","versionType":"semver"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:33db666051d805983e9c719388448620c6210d126e22aceeaa558a6b477defea · sha256:2e2ab7aa36d918c9… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"baseScore":6.5,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:33db666051d805983e9c719388448620c6210d126e22aceeaa558a6b477defea · sha256:2e2ab7aa36d918c9… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-401","description":"dos","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:33db666051d805983e9c719388448620c6210d126e22aceeaa558a6b477defea · sha256:2e2ab7aa36d918c9… · /containers/cna/problemTypes/0/descriptions/0
Source references
2 source assertions{"name":"Fix commit","tags":["patch"],"url":"https://github.com/zephyrproject-rtos/zephyr/commit/8dc7a37bc75402a0a3329397887f32f5fb4da3ad"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:33db666051d805983e9c719388448620c6210d126e22aceeaa558a6b477defea · sha256:2e2ab7aa36d918c9… · /containers/cna/references/0
{"name":"GHSA-r3cc-8wcr-xfj9","url":"https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-r3cc-8wcr-xfj9"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:33db666051d805983e9c719388448620c6210d126e22aceeaa558a6b477defea · sha256:2e2ab7aa36d918c9… · /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.