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Vulnerability · Published Oct 1, 2025 · Assigned by Linux

CVE-2023-53456scsi: qla4xxx: Add length check when parsing nlattrs

Medium 5.5

In plain English

A medium-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.2%top 94.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.55-1DEBIAN-CVE-2023-53456
Debian:13linux6.5.3-1DEBIAN-CVE-2023-53456
Debian:14linux6.5.3-1DEBIAN-CVE-2023-53456
Ubuntu:22.04:LTSlinux5.15.0-94.104UBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-aws5.15.0-1053.58UBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-azure5.15.0-1056.64UBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2023-53456
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1056.64.1UBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-gcp5.15.0-1051.59UBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2023-53456
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-gke5.15.0-1050.55UBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1036.42UBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2023-53456
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-ibm5.15.0-1046.49UBUNTU-CVE-2023-53456
Ubuntu:24.04:LTSlinux-intelno fix listedUBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1047.53UBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-kvm5.15.0-1050.55UBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-94.104UBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2023-53456
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1044.44UBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1022.22UBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1009.9UBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2023-53456
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2023-53456
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-oracle5.15.0-1051.57UBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-raspi5.15.0-1046.49UBUNTU-CVE-2023-53456
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2023-53456
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2023-53456
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2023-53456
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1027.31UBUNTU-CVE-2023-53456

Affected products (as reported)

VendorProductVersions
Linux Linux 00c31889f7513e9ffa6b2b4de8ad6d7f59a61c80 – before cfa6a1a79ed6d336fac7a5d87eb5471e4401829f00c31889f7513e9ffa6b2b4de8ad6d7f59a61c80 – before 5925e224cc6edfef57b20447f18323208461309b00c31889f7513e9ffa6b2b4de8ad6d7f59a61c80 – before 47f3be62eab50b8cd7e1ae5fc2c4dae687497c3400c31889f7513e9ffa6b2b4de8ad6d7f59a61c80 – before 6d65079c69dc1feb817ed71f5bd15e83a7d6832d00c31889f7513e9ffa6b2b4de8ad6d7f59a61c80 – before f61fc650c47849637fa1771a31a11674c824138a00c31889f7513e9ffa6b2b4de8ad6d7f59a61c80 – before 25feffb3fbd51ae81d92c65cebc0e932663828b300c31889f7513e9ffa6b2b4de8ad6d7f59a61c80 – before 4ed21975311247bb84e82298eeb359ec0a0fa84d00c31889f7513e9ffa6b2b4de8ad6d7f59a61c80 – before b018c0440b871d8b001c996e95fa4538bd292de6
Linux Linux 3.2

References