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CVE-2026-52955: Linux, логическа грешка

9.8

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 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: Fix potential out-of-bounds access in crush_decode() A message of type CEPH_MSG_OSD_MAP containing a crush map with at least one bucket has two fields holding the bucket algorithm. If the values in these two fields differ, an out-of-bounds access can occur. This is the case because the first algorithm field (alg) is used to allocate the correct amount of memory for a bucket of this type, while the second algorithm field inside the bucket (b->alg) is used in the subsequent processing. This patch fixes the issue by adding a check that compares alg and b->alg and aborts the processing in case they differ. Furthermore, b->alg is set to 0 in this case, because the destruction of the crush map also uses this field to determine the bucket type, which can again result in an out-of-bounds access when trying to free the memory pointed to by the fields of the bucket. To correctly free the memory allocated for the bucket in such a case, the corresponding call to kfree is moved from the algorithm-specific crush_destroy_bucket functions to the generic crush_destroy_bucket().

Засегнати продукти

  • Linux Linux: f24e9980eb860d8600cbe5ef3d2fd9295320d229 преди 6e70ef53e818c53eab28d7b0026b7fd03dddaba5; f24e9980eb860d8600cbe5ef3d2fd9295320d229 преди ebe76d58a48a48031b98543d86c4cd30a825b622; f24e9980eb860d8600cbe5ef3d2fd9295320d229 преди 3f42508191e129ee6b5ea96578d5cab14f2a013a; f24e9980eb860d8600cbe5ef3d2fd9295320d229 преди ea0d42137f0c06da71e37ffc647aab4c5309599a; f24e9980eb860d8600cbe5ef3d2fd9295320d229 преди cceb10023e76bc89f3fe9238ebd0ccab0fc7c7c5; f24e9980eb860d8600cbe5ef3d2fd9295320d229 преди 0f3604cbe4df14c5e58288ac9f57511e726a222d; f24e9980eb860d8600cbe5ef3d2fd9295320d229 преди fb176a99e4c1a5a8448a83d83d3606203ba81faa; f24e9980eb860d8600cbe5ef3d2fd9295320d229 преди 4c79fc2d598694bda845b46229c9d48b65042970
  • Linux Linux: 2.6.34; преди 2.6.34; 5.10.258 до 5.10.*; 5.15.209 до 5.15.*; 6.1.175 до 6.1.*; 6.6.141 до 6.6.*; 6.12.91 до 6.12.*; 6.18.33 до 6.18.*; 7.0.10 до 7.0.*; от 7.1 нататък
  • Red Hat: още 5 продукта, добавени от Red Hat

    Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9

Вид слабост

История

  • 24 юни 2026 Публикувано

Други уязвимости в Linux Linux

Първоизточници

CVE-2026-52955: Linux, логическа грешка | freedomonline.bg