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CVE-2026-98027: Linux

7.0

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 локално, при специфични условия, с обикновен потребителски вход и без действие от потребителя.

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: net: dsa: mv88e6xxx: bound the policy rule dump by the caller's buffer size mv88e6xxx_get_rxnfc() uses rxnfc->rule_cnt as the write index while dumping the policy IDR, clobbering the input value before it has been looked at. That input is the number of entries the caller had room for. ETHTOOL_GRXCLSRLALL requires no CAP_NET_ADMIN and the ioctl sizes the buffer from the rule_cnt userspace passes in, so once an admin has installed policy rules any user can ask for fewer slots than there are rules and run off the end of the allocation. A rule_cnt of 0 leaves the buffer pointer NULL and the walk dereferences it. Count into a local so the caller's limit survives the walk, and stop with -EMSGSIZE once it is reached.

    Засегнати продукти

    • Linux Linux: da7dc87553046a43be1620a783ce3d9f6583d322 преди 7e4bfc5f0b66feb22cba821303fc25ca22cd0887; da7dc87553046a43be1620a783ce3d9f6583d322 преди 01124cd2cf4b71755b1130ac82d78dcfbd5d69e3; da7dc87553046a43be1620a783ce3d9f6583d322 преди 609c4378f212cf580aae02250f1146caf63d873f; da7dc87553046a43be1620a783ce3d9f6583d322 преди c5b5c52b6524c9fb50def2260baac745c095ec3a; da7dc87553046a43be1620a783ce3d9f6583d322 преди 44cd4674d9aa5bdf793b8a8b481c9e8536ed6070; da7dc87553046a43be1620a783ce3d9f6583d322 преди 7a683c2b062810bca203e41866389daf387c235b; da7dc87553046a43be1620a783ce3d9f6583d322 преди cda5ac8fe8ac8e80b1703ebb8c4250726fc19739; da7dc87553046a43be1620a783ce3d9f6583d322 преди b1fffc273112e7284c5b705e186b43b5770cd3d5
    • Linux Linux: 5.4; преди 5.4; 5.10.271 до 5.10.*; 5.15.222 до 5.15.*; 6.1.189 до 6.1.*; 6.6.158 до 6.6.*; 6.12.111 до 6.12.*; 6.18.53 до 6.18.*; 7.2.7 до 7.2.*; от 7.3 нататък

    История

    • 25 септември 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-98027: Linux | freedomonline.bg