What’s Vulnerable › Vulnerabilities

CVE-2026-64173: tracing: Do not call map->ops->elt_free() if elt_alloc() fails

• 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: 2026-07-19 · updated 2026-08-13

Description

In the Linux kernel, the following vulnerability has been resolved: tracing: Do not call map->ops->elt_free() if elt_alloc() fails In paths where tracing_map_elt_alloc() failed to allocate objects, the map->ops->elt_alloc() call was never successful. In this case, map->ops->elt_free() should not be called.

Affected products

• Linux kernel: from 4.17 before 5.10.258; from 5.11 before 5.15.209; from 5.16 before 6.1.175; from 6.2 before 6.6.142; from 6.7 before 6.12.92; from 6.13 before 6.18.34 — fixed in 5.10.258, 5.15.209, 6.1.175, 6.12.92, 6.18.34, 6.6.142

How to fix

Upgrade to a fixed version: Linux kernel 5.10.258, 5.15.209, 6.1.175, 6.12.92. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/1a150947f8480262a46c860f1acb9c6597ca7097
• https://git.kernel.org/stable/c/49332e49ad5b20262cc719b03d4123b9362de701
• https://git.kernel.org/stable/c/798183376d9d3e278a270ea0e75a5769c8f145d9
• https://git.kernel.org/stable/c/8f0f5c4fb9df0e19a341e0c6ed8dc4fda9124f03
• https://git.kernel.org/stable/c/b427e9f6d81c9341cba23ef92f860f99f830d91d
• https://git.kernel.org/stable/c/b559a218eece132de0c58d444877b5627cbee524
• https://git.kernel.org/stable/c/b6723339736320b2e1784258ad4490cec7aac11a
• https://git.kernel.org/stable/c/f383cff9fb382139980bac1bcd3f3f5d59f68435

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