8.8
CVSS 3.1
Няма данни
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Няма потвърждение
Атакува се
Няма данни
Време до експлоатация
Атакува се от съседна мрежа, без особени условия, без вход и без действие от потребителя.
- Експлоатация: няма данни за експлоатация
- Атаката не може да се автоматизира
Описание
Оригинално описание
BusyBox before commit 42202bf contains a heap buffer overflow vulnerability in the DHCPv6 client (udhcpc6) DNS_SERVERS option handler in networking/udhcp/d6_dhcpc.c that allows network-adjacent attackers to trigger memory corruption by sending a crafted DHCPv6 response with a malformed D6_OPT_DNS_SERVERS option. Attackers can exploit incorrect heap buffer allocation calculations in the option_to_env() function to cause denial of service or achieve arbitrary code execution on embedded systems without heap hardening.
Засегнати продукти
- vda-linux busybox_mirror: преди 42202bfb1e6ac51fa995beda8be4d7b654aeee2a
- Red Hat Red Hat Hardened Images: от 1.37.0-7.3.hum1 нататък
- Red Hat Red Hat Enterprise Linux 6
Вид слабост
История
- 4 май 2026 Публикувано
Други уязвимости в vda-linux busybox_mirror
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-29004
- https://nvd.nist.gov/vuln/detail/CVE-2026-29004
- https://y637f9qq2x.com/posts/busybox-dhcpv6-heap-overflow/
- https://github.com/vda-linux/busybox_mirror/commit/42202bfb1e6ac51fa995beda8be4d7b654aeee2a
- https://github.com/vda-linux/busybox_mirror/commit/d368f3f7836d1c2484c8f839316e5c93e76d4409
- https://busybox.net/
- https://www.vulncheck.com/advisories/busybox-dhcpv6-client-heap-buffer-overflow-via-dns-servers
- https://access.redhat.com/security/cve/CVE-2026-29004
- https://bugzilla.redhat.com/show_bug.cgi?id=2466526
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-29004.json
- https://access.redhat.com/errata/RHSA-2026:30652