CVE-2025-37872: net: txgbe: fix memory leak in txgbe_probe() error path

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-05-09 · updated 2026-06-17
Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: net: txgbe: fix memory leak in txgbe_probe() error path When txgbe_sw_init() is called, memory is allocated for wx->rss_key in wx_init_rss_key(). However, in txgbe_probe() function, the subsequent error paths after txgbe_sw_init() don't free the rss_key. Fix that by freeing it in error path along with wx->mac_table. Also change the label to which execution jumps when txgbe_sw_init() fails, because otherwise, it could lead to a double free for rss_key, when the mac_table allocation fails in wx_sw_init().

Affected products

Linux kernel: from 6.8 before 6.12.25; from 6.13 before 6.14.4; 6.15-rc1, 6.15-rc2 — fixed in 6.12.25, 6.14.4

How to fix

Upgrade to a fixed version: Linux kernel 6.12.25, 6.14.4. Check the vendor advisory for mitigations.

References

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