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CVE-2023-54046

HIGHCVSS 7.8/10EPSS 0.22%

Last modified

CVE-2023-54046 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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.. EPSS estimates a 0.22% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1
7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
0.22%

12.6th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= be1eb7f78aa8fbe34779c56c266ccd0364604e71, < c61e7d182ee3f3f5ecf18a2964e303d49c539b52; >= be1eb7f78aa8fbe34779c56c266ccd0364604e71, < 796e02cca30a67322161f0745e5ce994bbe75605; >= be1eb7f78aa8fbe34779c56c266ccd0364604e71, < 840a1d3b77c1b062bd62b4733969a5b1efc274ce; >= be1eb7f78aa8fbe34779c56c266ccd0364604e71, < a006aa3eedb8bfd6fe317c3cfe9c86ffe76b2385; >= be1eb7f78aa8fbe34779c56c266ccd0364604e71, < 69c67d451fc19d88e54f7d97e8e7c093e08357e1; >= be1eb7f78aa8fbe34779c56c266ccd0364604e71, < b5a772adf45a32c68bef28e60621f12617161556
LinuxLinux5.4

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is CVE-2023-54046?
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.
How severe is CVE-2023-54046?
CVE-2023-54046 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.22% probability of exploitation in the next 30 days.
How do I fix CVE-2023-54046?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST