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CVE-2026-68155: Linux, невалидиран вход

7.5

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 по мрежата, без особени условия, без вход и без действие от потребителя.

CVE радар: още уязвимости от този вид

  • Експлоатация: няма данни за експлоатация
  • Атаката може да се автоматизира

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: libceph: Reject monmaps advertising zero monitors A message of type CEPH_MSG_MON_MAP contains a monmap that is sent from a monitor to the client. This monmap contains information about the existing monitors in the cluster. Currently, a monmap indicating that there are zero monitors in the cluster is treated as valid. However, it is impossible to have zero monitors in the cluster and still receive a valid monmap from a monitor. Therefore, such a monmap must be corrupted and should be treated as invalid. Furthermore, a monmap with a monitor count of zero can subsequently crash the client when attempting to open a session with a monitor in __open_session(). This happens because the "BUG_ON(monc->monmap->num_mon < 1)" assertion in pick_new_mon() is triggered. This patch extends a check in ceph_monmap_decode() to also reject arriving mon_maps with num_mon == 0 rather than only with num_mon > CEPH_MAX_MON. [ idryomov: drop "log output for unusual values of num_mon" part ]

Засегнати продукти

  • Linux Linux: ba75bb98cfb93b62c54af25bf67ff90857264bbe преди ba5f0015bfd376d764163045a61c17be75f44dae; ba75bb98cfb93b62c54af25bf67ff90857264bbe преди caf082ef8609a6ac26159ce115f55ab7d00231a3; ba75bb98cfb93b62c54af25bf67ff90857264bbe преди e3ccd4ecab09b22f507f49cb7ed9990c7158ceab; ba75bb98cfb93b62c54af25bf67ff90857264bbe преди 0591a15815b498be628a937146e44487d599ba33; ba75bb98cfb93b62c54af25bf67ff90857264bbe преди cd0d41bc569632eaaeccde9d2a6bc919ec00c407; ba75bb98cfb93b62c54af25bf67ff90857264bbe преди e67e8b694872c9bc66996040f9de9242f6236ed9; ba75bb98cfb93b62c54af25bf67ff90857264bbe преди 3b249546f59c3d6d3592c10657f82bc3f1faa07c; ba75bb98cfb93b62c54af25bf67ff90857264bbe преди 40480eee361ed9676b3f844d532ac28b47251634
  • Linux Linux: 2.6.34; преди 2.6.34; 5.10.271 до 5.10.*; 5.15.216 до 5.15.*; 6.1.183 до 6.1.*; 6.6.148 до 6.6.*; 6.12.101 до 6.12.*; 6.18.42 до 6.18.*; 7.1.6 до 7.1.*; от 7.2 нататък

Вид слабост

История

  • 10 август 2026 Публикувано

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