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Vulnerability · Published May 21, 2024 · Assigned by Linux

CVE-2021-47258scsi: core: Fix error handling of scsi_host_alloc()

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 15% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.2%top 85.3% 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: core: Fix error handling of scsi_host_alloc() After device is initialized via device_initialize(), or its name is set via dev_set_name(), the device has to be freed via put_device(). Otherwise device name will be leaked because it is allocated dynamically in dev_set_name(). Fix the leak by replacing kfree() with put_device(). Since scsi_host_dev_release() properly handles IDA and kthread removal, remove special-casing these from the error handling as well.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux5.10.46-1DEBIAN-CVE-2021-47258
Debian:13linux5.10.46-1DEBIAN-CVE-2021-47258
Debian:14linux5.10.46-1DEBIAN-CVE-2021-47258
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2021-47258
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2021-47258
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2021-47258
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2021-47258
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2021-47258
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2021-47258
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2021-47258
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2021-47258
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2021-47258
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2021-47258
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2021-47258
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2021-47258
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2021-47258
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2021-47258
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2021-47258
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2021-47258
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2021-47258
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2021-47258
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2021-47258
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2021-47258
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2021-47258
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2021-47258
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2021-47258
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2021-47258

Affected products (as reported)

VendorProductVersions
Linux Linux 1fa5ae857bb14f6046205171d98506d8112dd74e – before 8958181c1663e24a13434448e7d6b96b5d04900a1fa5ae857bb14f6046205171d98506d8112dd74e – before db08ce595dd64ea9859f7d088b51cbfc8e685c661fa5ae857bb14f6046205171d98506d8112dd74e – before 2dc85045ae65b9302a1d2e2ddd7ce4c030153a6a1fa5ae857bb14f6046205171d98506d8112dd74e – before 79296e292d67fa7b5fb8d8c27343683e823872c81fa5ae857bb14f6046205171d98506d8112dd74e – before 7a696ce1d5d16a33a6cd6400bbcc0339b2460e111fa5ae857bb14f6046205171d98506d8112dd74e – before 45d83db4728127944b237c0c8248987df9d478e71fa5ae857bb14f6046205171d98506d8112dd74e – before 66a834d092930cf41d809c0e989b13cd6f9ca006
Linux Linux 2.6.30

References