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FreeBSD Project FreeBSD OS: Mehrere Schwachstellen
view advisory published 2026-04-29
Ein Angreifer kann mehrere Schwachstellen in FreeBSD Project FreeBSD OS ausnutzen, um sich erweiterte Rechte, einschließlich Superuser-Rechte, zu verschaffen, beliebigen Code auszuführen – auch mit Administratorrechten –, Daten zu manipulieren, vertrauliche Informationen offenzulegen oder einen Denial-of-Service-Zustand herbeizuführen.
01
describes (6)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-42512US | — | — | ||
As dhclient is building an environment to pass to dhclient-script, it may need to resize the array of string pointers. The code which expands the array incorrectly calculates its… | ||||
| CVE-2026-39457US | — | — | ||
When exchanging data over a socket, libnv uses select(2) to wait for data to arrive. However, it does not verify whether the provided socket descriptor fits in select(2)'s file de… | ||||
| CVE-2026-35547US | — | — | ||
When processing the header of an incoming message, libnv failed to properly validate the message size.
The lack of validation allows a malicious program to write outside the bound… | ||||
| CVE-2026-7164US | — | — | ||
Incorrect packet validation allowed unbounded recursion parsing SCTP chunk parameters. This can eventually result in a stack overflow and panic.
Remote attackers can craft packet… | ||||
| CVE-2026-7270US | — | Exploit | ||
An operator precedence bug in the kernel results in a scenario where a buffer overflow causes attacker-controlled data to overwrite adjacent execve(2) argument buffers.
The bug ma… | ||||
| CVE-2026-42511US | — | — | ||
The BOOTP file field is written to the lease file without escaping embedded double-quotes, allowing injection of arbitrary dhclient.conf directives. When the lease file is subsequ… | ||||
02
references
External citations — patches, advisories, analysis.
- FreeBSD Security Advisory FreeBSD-SA-26:12.dhclient vom 2026-04-29external
- FreeBSD Security Advisory FreeBSD-SA-26:13.exec vom 2026-04-29external
- FreeBSD Security Advisory FreeBSD-SA-26:14.pf vom 2026-04-29external
- FreeBSD Security Advisory FreeBSD-SA-26:15.dhclient vom 2026-04-29external
- FreeBSD Security Advisory FreeBSD-SA-26:16.libnv vom 2026-04-29external
- FreeBSD Security Advisory FreeBSD-SA-26:17.libnv vom 2026-04-29external
- WID-SEC-W-2026-1324 - CSAF Versionself
- WID-SEC-2026-1324 - Portal Versionself
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