What’s Vulnerable › Vulnerabilities

CVE-2023-53435: cassini: Fix a memory leak in the error handling path of cas_init_one()

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-09-18 · updated 2026-06-17
• Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: cassini: Fix a memory leak in the error handling path of cas_init_one() cas_saturn_firmware_init() allocates some memory using vmalloc(). This memory is freed in the .remove() function but not it the error handling path of the probe. Add the missing vfree() to avoid a memory leak, should an error occur.

Affected products

• Linux kernel: from 2.6.28 before 4.14.316; from 4.15 before 4.19.284; from 4.20 before 5.4.244; from 5.5 before 5.10.181; from 5.11 before 5.15.113; from 5.16 before 6.1.30 — fixed in 4.14.316, 4.19.284, 5.10.181, 5.15.113, 5.4.244, 6.1.30

How to fix

Upgrade to a fixed version: Linux kernel 4.14.316, 4.19.284, 5.10.181, 5.15.113. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/11c0ed097a874156957b515d0ba7e356142eab87
• https://git.kernel.org/stable/c/172146c26f0c1b86ab4e9ebffc7e06f04229fa17
• https://git.kernel.org/stable/c/234e744d86bd95b381d24546df2dba72804e0219
• https://git.kernel.org/stable/c/412cd77a2c24b191c65ea53025222418db09817c
• https://git.kernel.org/stable/c/60d8e8b88087d68e10c8991a0f6733fa2f963ff0
• https://git.kernel.org/stable/c/b8b1a667744741fa7807b09a12797a27f14f3fac
• https://git.kernel.org/stable/c/dc61f7582cc92d547d02e141cd66f5d1f4ed8012
• https://git.kernel.org/stable/c/e20105d967ab5b53ff50a0e5991fe37324d2ba20

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