What’s Vulnerable › Vulnerabilities

CVE-2023-53470: ionic: catch failure from devlink_alloc

• 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: 2025-10-01 · updated 2026-06-17
• Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: ionic: catch failure from devlink_alloc Add a check for NULL on the alloc return. If devlink_alloc() fails and we try to use devlink_priv() on the NULL return, the kernel gets very unhappy and panics. With this fix, the driver load will still fail, but at least it won't panic the kernel.

Affected products

• Linux kernel: from 5.4 before 5.15.112; from 5.16 before 6.1.29; from 6.2 before 6.2.16; from 6.3 before 6.3.3 — fixed in 5.15.112, 6.1.29, 6.2.16, 6.3.3

How to fix

Upgrade to a fixed version: Linux kernel 5.15.112, 6.1.29, 6.2.16, 6.3.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0020c16c8af7f4bc9503a2088fb30793b6771fac
• https://git.kernel.org/stable/c/0d02efe7f25158c93146e3bb827bc7bb3cd5e71a
• https://git.kernel.org/stable/c/4a54903ff68ddb33b6463c94b4eb37fc584ef760
• https://git.kernel.org/stable/c/5325f50de5b1433b27dda7ccff5cb7283722a3f1
• https://git.kernel.org/stable/c/c177dd465f5c1e5f242cdb9258826c591c257e9a

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