Linux vulnerability

What happened

In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: dvm: fix memory leak in iwl_op_mode_dvm_start() In iwl_op_mode_dvm_start(), jumping to out_free_eeprom currently bypasses the out_free_eeprom_blob label. Consequently, error paths triggered after successfully parsing the EEPROM free priv->nvm_data but leak priv->eeprom_blob. Fix this memory leak by reordering the error handling labels so that out_free_eeprom falls through to out_free_eeprom_blob. The bug was first flagged by an experimental analysis tool we are developing for kernel memory-management bugs while analyzing v6.13-rc1. The tool is still under development and is not yet publicly available. Manual inspection confirms that the bug is still present in v7.1-rc6. An x86_64 allyesconfig build showed no new warnings. As we do not have supported Intel DVM wireless hardware and firmware to test with, no runtime testing was able to be performed.

Affected versions

Linux: 26a7ca9a71a3f7e1826de96b1a1e907123e11b07 through before 84ba017a1e1ea7896ed1e3258c947bdbfc5299c5 (git); 26a7ca9a71a3f7e1826de96b1a1e907123e11b07 through before ad2a9fdca4a7100472be82ee6048c616fc589720 (git); 26a7ca9a71a3f7e1826de96b1a1e907123e11b07 through before 67105abd6195a685a84dcb8a5daf54a1f4bfdb60 (git); 3.6 Fixed: See vendor advisory.

Why it matters

Review the vendor advisory and exposure of the affected product to determine operational impact.

Detection & mitigation

• Apply vendor-provided updates or mitigations.
• Review affected product exposure and access logs.