Cloud Vulnerability DB
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Vulnerability DatabaseCVE-2021-47308
CVE-2021-47308:
Linux Kernel vulnerability analysis and mitigation
Overview
CVE-2021-47308 is a vulnerability in the Linux kernel's SCSI libfc driver, specifically related to an array index out of bounds exception in the fcrportprli_resp() function. The vulnerability was discovered and disclosed on May 21, 2024 (CVE).
Technical details
The vulnerability exists in the Linux kernel's SCSI libfc driver where an array index out of bounds exception could occur in the fcrportprliresp() function. The issue was fixed by adding a bounds check before accessing the fcpassiveprov array with rdata->spptype as the index (Kernel Commit).
Impact
The vulnerability could potentially lead to memory access violations in the Linux kernel when processing SCSI libfc operations, which might result in system instability or potential security implications (CVE).
Mitigation and workarounds
The vulnerability has been patched in various Linux kernel versions. Ubuntu has released fixes for multiple versions including 20.04 LTS (focal) with version 5.4.0-88.99, 18.04 LTS (bionic) with version 4.15.0-159.167, and other affected versions. The fix involves adding proper bounds checking before accessing the array (Ubuntu).
Additional resources
Source: This report was generated using AI
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