CVE-2024-33619

low-risk
Published 2024-06-21

In the Linux kernel, the following vulnerability has been resolved: efi: libstub: only free priv.runtime_map when allocated priv.runtime_map is only allocated when efi_novamap is not set. Otherwise, it is an uninitialized value. In the error path, it is freed unconditionally. Avoid passing an uninitialized value to free_pool. Free priv.runtime_map only when it was allocated. This bug was discovered and resolved using Coverity Static Analysis Security Testing (SAST) by Synopsys, Inc.

Do I need to act?

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0.02% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.5/10 Medium
LOCAL / LOW complexity

Affected Products (1)

Affected Vendors

Linux

References (8)

Mailing List https://git.kernel.org/stable/c/4b2543f7e1e6b91cfc8dd1696e3cdf01c3ac8974
Mailing List https://git.kernel.org/stable/c/6ca67a5fe1c606d1fbe24c30a9fc0bdc43a18554
Mailing List https://git.kernel.org/stable/c/9dce01f386c9ce6990c0a83fa14b1c95330b037e
Mailing List https://git.kernel.org/stable/c/b8938d6f570f010a1dcdbfed3e5b5d3258c2a908
Mailing List https://git.kernel.org/stable/c/4b2543f7e1e6b91cfc8dd1696e3cdf01c3ac8974
Mailing List https://git.kernel.org/stable/c/6ca67a5fe1c606d1fbe24c30a9fc0bdc43a18554
Mailing List https://git.kernel.org/stable/c/9dce01f386c9ce6990c0a83fa14b1c95330b037e
Mailing List https://git.kernel.org/stable/c/b8938d6f570f010a1dcdbfed3e5b5d3258c2a908
23
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal