What’s Vulnerable › Vulnerabilities

CVE-2022-48955: net: thunderbolt: fix memory leak in tbnet_open()

• 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
• Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: net: thunderbolt: fix memory leak in tbnet_open() When tb_ring_alloc_rx() failed in tbnet_open(), ida that allocated in tb_xdomain_alloc_out_hopid() is not released. Add tb_xdomain_release_out_hopid() to the error path to release ida.

Affected products

• Linux kernel: from 5.13 before 5.15.83; from 5.16 before 6.0.13; 6.1-rc1, 6.1-rc2, 6.1-rc3, 6.1-rc4, 6.1-rc5, 6.1-rc6 (+2) — fixed in 5.15.83, 6.0.13

How to fix

Upgrade to a fixed version: Linux kernel 5.15.83, 6.0.13. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/b9274dbe399952a8175db2e1ee148b7c9ba2b538
• https://git.kernel.org/stable/c/ed14e5903638f6eb868e3e2b4e610985e6a6c876
• https://git.kernel.org/stable/c/ed6e955f3b7e0e622c080f4bcb5427a5e1af4c2a

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