CVE Explorer
CVE-2026-45251
A file descriptor can be closed while a thread is blocked in a poll(2) or select(2) call waiting for that descriptor. Because the blocked thread does not hold a reference to the underlying object, this closure may result in the object being freed while the thread remains blocked. In this situation, the kernel must remove the blocked thread from the per-object wait queue prior to freeing the object.
In the case of some file descriptor types, the kernel failed to unlink blocked threads from the
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"defaultStatus":"unknown","modules":["file"],"product":"FreeBSD","vendor":"FreeBSD","versions":[{"lessThan":"p9","status":"affected","version":"15.0-RELEASE","versionType":"release"},{"lessThan":"p5","status":"affected","version":"14.4-RELEASE","versionType":"release"},{"lessThan":"p14","status":"affected","version":"14.3-RELEASE","versionType":"release"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:0890943dd16dfb16ec9879b73ff5dc368d574e0a0244edf6dff511aef98272e2 · sha256:40566c56e5e08464… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:0890943dd16dfb16ec9879b73ff5dc368d574e0a0244edf6dff511aef98272e2 · sha256:40566c56e5e08464… · /containers/adp/0/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-416","description":"CWE-416: Use After Free","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:0890943dd16dfb16ec9879b73ff5dc368d574e0a0244edf6dff511aef98272e2 · sha256:40566c56e5e08464… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"tags":["vendor-advisory"],"url":"https://security.freebsd.org/advisories/FreeBSD-SA-26:19.file.asc"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:0890943dd16dfb16ec9879b73ff5dc368d574e0a0244edf6dff511aef98272e2 · sha256:40566c56e5e08464… · /containers/cna/references/0
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.