What’s Vulnerable › Vulnerabilities

CVE-2024-42320: s390/dasd: fix error checks in dasd_copy_pair_store()

• 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: 2024-08-17 · updated 2026-06-17
• Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: s390/dasd: fix error checks in dasd_copy_pair_store() dasd_add_busid() can return an error via ERR_PTR() if an allocation fails. However, two callsites in dasd_copy_pair_store() do not check the result, potentially resulting in a NULL pointer dereference. Fix this by checking the result with IS_ERR() and returning the error up the stack.

Affected products

• Linux kernel: from 6.1 before 6.1.103; from 6.2 before 6.6.44; from 6.7 before 6.10.3 — fixed in 6.1.103, 6.10.3, 6.6.44

How to fix

Upgrade to a fixed version: Linux kernel 6.1.103, 6.10.3, 6.6.44. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/68d4c3722290ad300c295fb3435e835d200d5cb2
• https://git.kernel.org/stable/c/8e64d2356cbc800b4cd0e3e614797f76bcf0cdb8
• https://git.kernel.org/stable/c/cc8b7284d5076722e0b8062373b68d8e47c3bace
• https://git.kernel.org/stable/c/e511167e65d332d07b3c7a3d5a741ee9c19a8c27
• https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

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