CVE-2026-74313
Description
In the Linux kernel, the following vulnerability has been resolved: vduse: hold vduse_lock across IDR lookup in open path vduse_dev_open() looks up struct vduse_dev through the IDR and then acquires dev->lock only after vduse_lock has been dropped. This leaves a window where a concurrent VDUSE_DESTROY_DEV can remove the same object from the IDR and free it before the open path locks the device, leading to a use-after-free. Close this race by keeping vduse_lock held until dev->lock has been acquired in the open path, matching the lock ordering already used by the destroy path.
How to fix
- Linux Linux35483c5306e09b3190ff937089d404a78012695c, 5c1560be8aa6849356455af67518d35c551cbd95, 93ed4692f2299a40346025979f40e4a9b7b33af7, d94e2947203aead590fd63f667d316d4475d65af, a2d0a57538fd0b3b3ab75d64bb64f4cd2fab13a2, 79e12c891940b0c4c75881b7fd82a8cbb8ac97be, e440e077748939839d9f76e24383b76b785f80ce or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | c8a6153b6c59d95c0e091f053f6f180952ade91e ≤ v < 35483c5306e09b3190ff937089d404a78012695c, c8a6153b6c59d95c0e091f053f6f180952ade91e ≤ v < 5c1560be8aa6849356455af67518d35c551cbd95, c8a6153b6c59d95c0e091f053f6f180952ade91e ≤ v < 93ed4692f2299a40346025979f40e4a9b7b33af7, c8a6153b6c59d95c0e091f053f6f180952ade91e ≤ v < d94e2947203aead590fd63f667d316d4475d65af, c8a6153b6c59d95c0e091f053f6f180952ade91e ≤ v < a2d0a57538fd0b3b3ab75d64bb64f4cd2fab13a2, c8a6153b6c59d95c0e091f053f6f180952ade91e ≤ v < 79e12c891940b0c4c75881b7fd82a8cbb8ac97be, c8a6153b6c59d95c0e091f053f6f180952ade91e ≤ v < e440e077748939839d9f76e24383b76b785f80ce, 5.15 | 35483c5306e09b3190ff937089d404a78012695c, 5c1560be8aa6849356455af67518d35c551cbd95, 93ed4692f2299a40346025979f40e4a9b7b33af7, d94e2947203aead590fd63f667d316d4475d65af, a2d0a57538fd0b3b3ab75d64bb64f4cd2fab13a2, 79e12c891940b0c4c75881b7fd82a8cbb8ac97be, e440e077748939839d9f76e24383b76b785f80ce |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.