Към съдържанието
Търсене

CVE-2026-89741: 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.

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: Revert "media: v4l2-dev: fix error handling in __video_register_device()" This reverts commit 2a934fdb01db6458288fc9386d3d8ceba6dd551a. The intentions of that patch were good, but it doesn't work. The idea is that if device_register fails, you have to do a put_device to let the ref counter release resources. However, the V4L2 API says that if video_register_device() fails, then you have to call video_device_release(), which kfree()s the video_device struct. But the put_device() will already have freed the struct, so you end up in a double-free scenario. There is not really a good way of fixing this without breaking video_register_device() into two parts, one that initializes everything, and one that does the actual device_register, and then converting all V4L2 drivers to this new model. That is a massive job, and it is very unlikely that device_register will fail. So rather than ending up in a double-free scenario, just revert this patch, and in that case we'll have a small memory leak. Which is a lot more robust.

    Засегнати продукти

    • Linux Linux: e5c8e62ae551e0ad2e15412aa0c57c2856d59677 преди 8b998c171ed875e402e1fd1c5cd619e4ca05e9c1; 8b451a9a46f2bfc510e6d5c2492df91647586184 преди 3de14b4f681a1b3c6d375d98d9d37a55ebb85349; b6be1f5633eae200af2527e9eeb7f51be5739b0f преди 8027f82c0f5474ed72448e160ee9778051fa1f49; ae7b143e05b36fc69d6571751855946cc45064c6 преди 2ac009a65d2385e9f0799eaf9d9694a29153a161; 2429bb9fad88c8fa84c4956b0a21cf5afe5e92b7 преди 712ca1cf756de2557a116e0df55791bac0c9f99e; 2a934fdb01db6458288fc9386d3d8ceba6dd551a преди aad08b5f67d2a8116e1a00bce2611c1513b10bce; 2a934fdb01db6458288fc9386d3d8ceba6dd551a преди ce792b94e03882108019ba996c1a7c4d4e09be2c; 2a934fdb01db6458288fc9386d3d8ceba6dd551a преди e7600f5cee5de14065f950807931d6e6d40fb2d7; ee141706e701356dda41c6fed9ee18bf427c28e3; 4451412739ed33a49b34624299394ee575116d0c; 5.10.239 преди 5.10.270; 5.15.186 преди 5.15.221; 6.1.142 преди 6.1.188; 6.6.95 преди 6.6.157; 6.12.35 преди 6.12.109; 5.4.295 преди 5.5; 6.15.4 преди 6.16
    • Linux Linux: 6.16; преди 6.16; 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.*; от 7.3 нататък

    История

    • 11 септември 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-89741: Linux | freedomonline.bg