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CVE-2026-80550: Linux

7.9

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

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

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: s390/vfio_ccw: Fix out of bounds check on CCW array The routine ccwchain_calc_length() counts the number of channel command words (CCWs) that are chained together in a single channel program, and rejects anything larger than CCWCHAIN_LEN_MAX (256) CCWs. The loop itself is "do..while (count < 257)", and while the logic in is_cpa_within_range() correctly adjusts between the 0-index array of CCWs and the count of CCWs starting at 1, this means it would look at a possible 257th CCW before ending the loop and (correctly) returning an error. Fix this by restructuring the loop to break as soon as 256 CCWs (thus indexes 0-255) are examined, without looking at memory outside the range.

Засегнати продукти

  • Linux Linux: 0a19e61e6d4c6192077ead760ba0a2d350987d4c преди 0282fb1c4b638eecfe2cc558092c460911d8f7e2; 0a19e61e6d4c6192077ead760ba0a2d350987d4c преди 907adc667d902fafbdb2d740d57b55bd025dc4cd; 0a19e61e6d4c6192077ead760ba0a2d350987d4c преди f20be33d093ce7630c17ff7ed93caf7eaf8ac1a3; 0a19e61e6d4c6192077ead760ba0a2d350987d4c преди af3f80ca4c8b17f20f9e588def076288fdb49e65; 0a19e61e6d4c6192077ead760ba0a2d350987d4c преди 499a8a66b1598bfab97182aed15e0f1646074a3d; 0a19e61e6d4c6192077ead760ba0a2d350987d4c преди 4c2e1d359d7a2b82cdf3254e4e480af9417f99fb; 0a19e61e6d4c6192077ead760ba0a2d350987d4c преди d5d096cd9369e986d4e5153baa86b8b35c283e09; 0a19e61e6d4c6192077ead760ba0a2d350987d4c преди a005b7f1a491ffda61bff0fd0f6548f8986fb977
  • Linux Linux: 4.12; преди 4.12; 5.10.266 до 5.10.*; 5.15.217 до 5.15.*; 6.1.184 до 6.1.*; 6.6.153 до 6.6.*; 6.12.105 до 6.12.*; 6.18.46 до 6.18.*; 7.1.10 до 7.1.*; от 7.2 нататък

История

  • 26 август 2026 Публикувано

Други уязвимости в Linux Linux

Първоизточници

CVE-2026-80550: Linux | freedomonline.bg