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CVE-2024-50026: scsi: wd33c93: Don't use stale scsi_pointer value

• Severity: medium (CVSS 5.5 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: 2024-10-21 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: scsi: wd33c93: Don't use stale scsi_pointer value A regression was introduced with commit dbb2da557a6a ("scsi: wd33c93: Move the SCSI pointer to private command data") which results in an oops in wd33c93_intr(). That commit added the scsi_pointer variable and initialized it from hostdata->connected. However, during selection, hostdata->connected is not yet valid. Fix this by getting the current scsi_pointer from hostdata->selecting.

Affected products

• Linux kernel: from 5.18 before 6.1.113; from 6.2 before 6.6.57; from 6.7 before 6.11.4; 6.12-rc1, 6.12-rc2 — fixed in 6.1.113, 6.11.4, 6.6.57

How to fix

Upgrade to a fixed version: Linux kernel 6.1.113, 6.11.4, 6.6.57. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/3afeceda855dea9b85cddd96307d4d17c8742005
• https://git.kernel.org/stable/c/9023ed8d91eb1fcc93e64dc4962f7412b1c4cbec
• https://git.kernel.org/stable/c/b60ff1a95c7c386cdd6153de3d7d85edaeabd800
• https://git.kernel.org/stable/c/e04642a207f1d2ae28a08624c04c67f5681f3451
• https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

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