CVE-2023-53456

Summary

In the Linux kernel, the following vulnerability has been resolved: scsi: qla4xxx: Add length check when parsing nlattrs There are three places that qla4xxx parses nlattrs: - qla4xxx_set_chap_entry() - qla4xxx_iface_set_param() - qla4xxx_sysfs_ddb_set_param() and each of them directly converts the nlattr to specific pointer of structure without length checking. This could be dangerous as those attributes are not validated and a malformed nlattr (e.g., length 0) could result in an OOB read that leaks heap dirty data. Add the nla_len check before accessing the nlattr data and return EINVAL if the length check fails.

Impact & exploitability

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products we track (1)

Recommendation

Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.

Official patch: https://git.kernel.org/stable/c/25feffb3fbd51ae81d92c65cebc0e932663828b3 ↗

Additional information

• NVD record
• https://git.kernel.org/stable/c/25feffb3fbd51ae81d92c65cebc0e932663828b3Patch
• https://git.kernel.org/stable/c/47cd3770e31df942e2bb925a9a855c79ed0662ebPatch
• https://git.kernel.org/stable/c/47f3be62eab50b8cd7e1ae5fc2c4dae687497c34Patch
• https://git.kernel.org/stable/c/4ed21975311247bb84e82298eeb359ec0a0fa84dPatch
• https://git.kernel.org/stable/c/5925e224cc6edfef57b20447f18323208461309bPatch
• https://git.kernel.org/stable/c/6d65079c69dc1feb817ed71f5bd15e83a7d6832dPatch
• https://git.kernel.org/stable/c/b018c0440b871d8b001c996e95fa4538bd292de6Patch
• https://git.kernel.org/stable/c/cfa6a1a79ed6d336fac7a5d87eb5471e4401829fPatch