Linux Kernel Vulnerability in seqiv Function Leading to Use-After-Free

CVE-2023-53373

What is CVE-2023-53373?

A critical issue has been identified in the Linux kernel regarding the seqiv function within the crypto subsystem. The function failed to properly handle the EBUSY return status, which is crucial when the MAY_BACKLOG flag is set during a request. This oversight can lead to backlogged requests improperly triggering a use-after-free condition, potentially allowing an attacker to exploit this flaw for arbitrary code execution or system instability. It is essential for users and administrators of affected versions to update their systems to mitigate risks associated with this vulnerability.

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