CVE-2024-44966

binfmt_flat: Fix corruption when not offsetting data start

Description

In the Linux kernel, the following vulnerability has been resolved: binfmt_flat: Fix corruption when not offsetting data start Commit 04d82a6d0881 ("binfmt_flat: allow not offsetting data start") introduced a RISC-V specific variant of the FLAT format which does not allocate any space for the (obsolete) array of shared library pointers. However, it did not disable the code which initializes the array, resulting in the corruption of sizeof(long) bytes before the DATA segment, generally the end of the TEXT segment. Introduce MAX_SHARED_LIBS_UPDATE which depends on the state of CONFIG_BINFMT_FLAT_NO_DATA_START_OFFSET to guard the initialization of the shared library pointer region so that it will only be initialized if space is reserved for it.

5.5

CVSS

Severity: Medium

CVSS 3.1 •

EPSS 0.04%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/3a684499261d0f7ed5ee72793025c88c2276809c	patch
https://git.kernel.org/stable/c/af65d5383854cc3f172a7d0843b628758bf462c8	patch
https://git.kernel.org/stable/c/49df34d2b7da9e57c839555a2f7877291ce45ad1	patch
https://git.kernel.org/stable/c/9350ba06ee61db392c486716ac68ecc20e030f7c	patch
https://git.kernel.org/stable/c/3eb3cd5992f7a0c37edc8d05b4c38c98758d8671	patch

Frequently Asked Questions

What is the severity of CVE-2024-44966?: CVE-2024-44966 has been scored as a medium severity vulnerability.
How to fix CVE-2024-44966?: To fix CVE-2024-44966, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-44966 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2024-44966 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-44966?: CVE-2024-44966 affects Linux Linux, Linux Linux.

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