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CVE-2026-74519: 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: pinctrl: devicetree: don't free uninitialized dev_name on error path dt_remember_or_free_map() duplicates dev_name for each map entry. If kstrdup_const() fails, dt_free_map() frees dev_name in all num_maps entries, including entries that have not been initialized. Some pinctrl drivers, including pinctrl-imx, allocate the map with kmalloc() and leave dev_name for the core to initialize. The untouched entries therefore contain uninitialized data which is passed to kfree_const(). Reproduced on qemu's mcimx6ul-evk (pinctrl-imx) with failslab injection while binding the pinctrl-consuming device, under KASAN: BUG: KASAN: double-free in dt_free_map+0x34/0xa4 Free of addr c425a900 by task init/1 kfree from dt_free_map+0x34/0xa4 dt_free_map from dt_remember_or_free_map+0x184/0x198 dt_remember_or_free_map from pinctrl_dt_to_map+0x33c/0x4c8 pinctrl_dt_to_map from create_pinctrl+0x9c/0x5c0 Initialize all dev_name fields to NULL before duplicating the device name, making the full-map cleanup safe after a partial failure.

Засегнати продукти

  • Linux Linux: be4c60b563edee3712d392aaeb0943a768df7023 преди e3cfb22bad363bebcfd55d909e12d499cb8c5490; be4c60b563edee3712d392aaeb0943a768df7023 преди 1586423da2739a80871ef6240016fcb9c7339bfb; be4c60b563edee3712d392aaeb0943a768df7023 преди dec5f0a8080502908dec5e35597c7ae07d533a3b; be4c60b563edee3712d392aaeb0943a768df7023 преди 929f6396baade89999ec8a1281232c101cbc727d; be4c60b563edee3712d392aaeb0943a768df7023 преди 321fe3584a8298386938130d138191aa35040b75; be4c60b563edee3712d392aaeb0943a768df7023 преди ad0ad3c228b6f76fde10f32047e0ec5fbc109dc8; be4c60b563edee3712d392aaeb0943a768df7023 преди 9d00a5ac7cd3d32ae61140f4b8a62f136de84e7d; be4c60b563edee3712d392aaeb0943a768df7023 преди 015b5bcbcb622b32317642be91a7f79aa5413649; 03f69244302d7954f42f528ea2d45903ebbf59f3; 77440c3a37203e3f4667d06e37f76ef3968d2d8c; 679c4f27b8958b65bb51d1c3dfdbf3befe4a33a3; f88ac1330779c5bfdd79f7d7f7d4d3343c782f92; f739a699db7d5a5cf39ca3ce2c84e4fe4a8f4c5d; 4.4.244 преди 4.5; 4.9.244 преди 4.10; 4.14.161 преди 4.15; 4.19.92 преди 4.20; 5.4.7 преди 5.5
  • Linux Linux: 5.5; преди 5.5; 5.10.265 до 5.10.*; 5.15.216 до 5.15.*; 6.1.183 до 6.1.*; 6.6.151 до 6.6.*; 6.12.103 до 6.12.*; 6.18.44 до 6.18.*; 7.1.8 до 7.1.*; от 7.2 нататък

История

  • 15 август 2026 Публикувано

Други уязвимости в Linux Linux

Първоизточници

CVE-2026-74519: Linux | freedomonline.bg