CVE-2022-49444

module: fix [e_shstrndx].sh_size=0 OOB access

Description

In the Linux kernel, the following vulnerability has been resolved: module: fix [e_shstrndx].sh_size=0 OOB access It is trivial to craft a module to trigger OOB access in this line: if (info->secstrings[strhdr->sh_size - 1] != '\0') { BUG: unable to handle page fault for address: ffffc90000aa0fff PGD 100000067 P4D 100000067 PUD 100066067 PMD 10436f067 PTE 0 Oops: 0000 [#1] PREEMPT SMP PTI CPU: 7 PID: 1215 Comm: insmod Not tainted 5.18.0-rc5-00007-g9bf578647087-dirty #10 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-4.fc34 04/01/2014 RIP: 0010:load_module+0x19b/0x2391 [rebased patch onto modules-next]

N/A

CVSS

Severity:

EPSS 0.03%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/09cb6663618a74fe5572a4931ecbf098832e79ec
https://git.kernel.org/stable/c/921630e2e5124a04158129a8f22f4b425e61a858
https://git.kernel.org/stable/c/45a76414b6d8b8b39c23fea53b9d20e831ae72a0
https://git.kernel.org/stable/c/391e982bfa632b8315235d8be9c0a81374c6a19c

Frequently Asked Questions

What is the severity of CVE-2022-49444?: CVE-2022-49444 has not yet been assigned a CVSS score.
How to fix CVE-2022-49444?: To fix CVE-2022-49444, 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-2022-49444 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2022-49444 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-2022-49444?: CVE-2022-49444 affects Linux Linux, Linux Linux.

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