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CVE-2026-80944: Linux

7.8

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 локално, без особени условия, с обикновен потребителски 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: wifi: mwifiex: Detach sync cmd buffer on interrupted wait mwifiex synchronous commands keep the caller-provided data buffer in cmd_node->data_buf. Several callers pass stack-allocated objects there. If wait_event_interruptible_timeout() is interrupted, the caller can return and release that stack object while the firmware command is still the current command. A late firmware response then reaches the normal response handler, which can copy data through cmd_node->data_buf into the stale stack address. This fixes a stack corruption observed during repeated association and disassociation cycles. The panic trace showed the command wait being interrupted immediately before a bad pointer dereference: cmd_wait_q terminated: -512 Unable to handle kernel paging request at virtual address 002c583837384662 Kernel panic - not syncing: stack-protector: Kernel stack is corrupted ... Tainted: [M]=MACHINE_CHECK The fault address decodes as little-endian ASCII: 0x002c583837384662 -> "bF878X,\0" which is a fragment of the VERSION_EXT firmware string exposed as debugfs "verext": w8997o-V4, RF878X, FP92, 16.92.21.p153.7 The same runs also showed corrupted control data containing: 0x2400372e333531 -> "153.7\0$" which is the tail of the same VERSION_EXT string. This points at a late VERSION_EXT response writing through a stale stack-backed data_buf after the interrupted wait returned. After cancelling pending commands on an interrupted or timed-out wait, detach the caller-owned data buffer from the still-current command. This preserves the existing command cancellation behaviour while preventing a late response from writing through a pointer whose lifetime ended with the waiting caller. Tested on an i.MX8MP board using an 88W8997.

Засегнати продукти

  • Linux Linux: 3d026d09b28dda24777129a931634949c75a9181 преди 8c67b8c50286e0cb7f18d667e6a37a2ec6e08ff9; 3d026d09b28dda24777129a931634949c75a9181 преди 9024c7729eb523cf4f3a4203966d3a4aaabf030d; 3d026d09b28dda24777129a931634949c75a9181 преди 9e06c9c8a1f10c55d9bc5d139656d58795e64483; 3d026d09b28dda24777129a931634949c75a9181 преди f2134d6ff30cd6e1bf63d6b0a5d8e0839f0168b3; 3d026d09b28dda24777129a931634949c75a9181 преди 20ee9c03f261bf6ac59331e2ca7b46b23646412a; 3d026d09b28dda24777129a931634949c75a9181 преди b1bbeb8970eeb6c6bf3cd5314138103f7b69446d; 3d026d09b28dda24777129a931634949c75a9181 преди d29a165588b6a0cf7a38db5cbd602aef7ef8c658; 3d026d09b28dda24777129a931634949c75a9181 преди ef06882c7d8a7400b67d0d003b1008093dd589ed
  • Linux Linux: 3.15; преди 3.15; 5.10.270 до 5.10.*; 5.15.221 до 5.15.*; 6.1.188 до 6.1.*; 6.6.157 до 6.6.*; 6.12.109 до 6.12.*; 6.18.50 до 6.18.*; 7.2.4 до 7.2.*; 7.3 до *

История

  • 11 септември 2026 Публикувано

Други уязвимости в Linux Linux

Първоизточници

CVE-2026-80944: Linux | freedomonline.bg