What’s Vulnerable › Vulnerabilities

CVE-2022-49811: drbd: use after free in drbd_create_device()

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-05-01 · updated 2026-06-17
• Weakness: CWE-416

Description

In the Linux kernel, the following vulnerability has been resolved: drbd: use after free in drbd_create_device() The drbd_destroy_connection() frees the "connection" so use the _safe() iterator to prevent a use after free.

Affected products

• Linux kernel: from 3.15 before 4.14.300; from 4.15 before 4.19.267; from 4.20 before 5.4.225; from 5.5 before 5.10.156; from 5.11 before 5.15.80; from 5.16 before 6.0.10 — fixed in 4.14.300, 4.19.267, 5.10.156, 5.15.80, 5.4.225, 6.0.10

How to fix

Upgrade to a fixed version: Linux kernel 4.14.300, 4.19.267, 5.10.156, 5.15.80. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/7d93417d596402ddd46bd76c721f205d09d0d025
• https://git.kernel.org/stable/c/813a8dd9c45fd46f5cbbfbedf0791afa7740ccf5
• https://git.kernel.org/stable/c/9ed51414aef6e59e832e2960f10766dce2d5b1a1
• https://git.kernel.org/stable/c/a7a1598189228b5007369a9622ccdf587be0730f
• https://git.kernel.org/stable/c/bf47ca1b35fc1f55091ffaff5fbe41ea0c6f59a1
• https://git.kernel.org/stable/c/c2a00b149836d60c222930bbea6b2139caf34d4f
• https://git.kernel.org/stable/c/fc1897f16ebcfd22364f2afcc27f53a740f3bc7a

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