CVE-2024-53241

x86/xen: don't do PV iret hypercall through hypercall page

Description

In the Linux kernel, the following vulnerability has been resolved: x86/xen: don't do PV iret hypercall through hypercall page Instead of jumping to the Xen hypercall page for doing the iret hypercall, directly code the required sequence in xen-asm.S. This is done in preparation of no longer using hypercall page at all, as it has shown to cause problems with speculation mitigations. This is part of XSA-466 / CVE-2024-53241.

N/A

CVSS

Severity:

EPSS 0.08%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/05df6e6cd9a76b778aee33c3c18c9f3b3566d4a5
https://git.kernel.org/stable/c/c7b4cfa6213a44fa48714186dfdf125072d036e3
https://git.kernel.org/stable/c/fa719857f613fed94a79da055b13ca51214c694f
https://git.kernel.org/stable/c/82c211ead1ec440dbf81727e17b03b5e3c44b93d
https://git.kernel.org/stable/c/f7c3fdad0a474062d566aae3289d490d7e702d30
https://git.kernel.org/stable/c/a2796dff62d6c6bfc5fbebdf2bee0d5ac0438906
http://www.openwall.com/lists/oss-security/2024/12/17/2
http://www.openwall.com/lists/oss-security/2024/12/23/1
http://www.openwall.com/lists/oss-security/2025/01/05/1
http://www.openwall.com/lists/oss-security/2025/01/05/2
http://xenbits.xen.org/xsa/advisory-466.html

Frequently Asked Questions

What is the severity of CVE-2024-53241?: CVE-2024-53241 has not yet been assigned a CVSS score.
How to fix CVE-2024-53241?: To fix CVE-2024-53241, 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-2024-53241 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2024-53241 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-2024-53241?: CVE-2024-53241 affects Linux Linux, Linux Linux.

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