CVE-2023-54046

crypto: essiv - Handle EBUSY correctly

EPSS 0.2%

Vexday Risk Score

3Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS —EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

24 Dec 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

In the Linux kernel, the following vulnerability has been resolved: crypto: essiv - Handle EBUSY correctly As it is essiv only handles the special return value of EINPROGERSS, which means that in all other cases it will free data related to the request. However, as the caller of essiv may specify MAY_BACKLOG, we also need to expect EBUSY and treat it in the same way. Otherwise backlogged requests will trigger a use-after-free.

Affected products

Linux · Linux

References

https://git.kernel.org/stable/c/69c67d451fc19d88e54f7d97e8e7c093e08357e1 https://git.kernel.org/stable/c/796e02cca30a67322161f0745e5ce994bbe75605 https://git.kernel.org/stable/c/840a1d3b77c1b062bd62b4733969a5b1efc274ce https://git.kernel.org/stable/c/a006aa3eedb8bfd6fe317c3cfe9c86ffe76b2385 https://git.kernel.org/stable/c/b5a772adf45a32c68bef28e60621f12617161556 https://git.kernel.org/stable/c/c61e7d182ee3f3f5ecf18a2964e303d49c539b52