CVE-2023-53456
Published: October 2, 2025Last modified: October 2, 2025
Description
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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.53-r0) |
| 25 LTS | linux-lts | Not affected (6.6.89-r0) | |
| Stream | linux-lts | Fixed (6.6.58-r0) |
References
- https://git.kernel.org/stable/c/25feffb3fbd51ae81d92c65cebc0e932663828b3
- https://git.kernel.org/stable/c/47cd3770e31df942e2bb925a9a855c79ed0662eb
- https://git.kernel.org/stable/c/47f3be62eab50b8cd7e1ae5fc2c4dae687497c34
- https://git.kernel.org/stable/c/4ed21975311247bb84e82298eeb359ec0a0fa84d
- https://git.kernel.org/stable/c/5925e224cc6edfef57b20447f18323208461309b
- https://git.kernel.org/stable/c/6d65079c69dc1feb817ed71f5bd15e83a7d6832d
- https://git.kernel.org/stable/c/b018c0440b871d8b001c996e95fa4538bd292de6
- https://git.kernel.org/stable/c/cfa6a1a79ed6d336fac7a5d87eb5471e4401829f
- https://git.kernel.org/stable/c/f61fc650c47849637fa1771a31a11674c824138a