CVE-2026-43462: net: spacemit: Fix error handling in emac_tx_mem_map()

Severity: high (CVSS 7.5 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: 2026-05-08 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: net: spacemit: Fix error handling in emac_tx_mem_map() The DMA mappings were leaked on mapping error. Free them with the existing emac_free_tx_buf() function.

Affected products

Linux kernel: from 6.18 before 6.18.19; from 6.19 before 6.19.9; 7.0-rc1, 7.0-rc2, 7.0-rc3 — fixed in 6.18.19, 6.19.9

How to fix

Upgrade to a fixed version: Linux kernel 6.18.19, 6.19.9. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/86292155bea578ebab0ca3b65d4d87ecd8a0e9ea
https://git.kernel.org/stable/c/c34ebd7b24ea70be3c6fdb6936f79f593f37df60
https://git.kernel.org/stable/c/edeaba385318f60ec1b32470da4d5eb800294d16

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