CVE-2023-52740

Source
https://nvd.nist.gov/vuln/detail/CVE-2023-52740
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-52740.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2023-52740
Related
Published
2024-05-21T16:15:13Z
Modified
2024-09-18T01:00:22Z
Summary
[none]
Details

In the Linux kernel, the following vulnerability has been resolved:

powerpc/64s/interrupt: Fix interrupt exit race with security mitigation switch

The RFI and STF security mitigation options can flip the interruptexitnot_reentrant static branch condition concurrently with the interrupt exit code which tests that branch.

Interrupt exit tests this condition to set MSR[EE|RI] for exit, then again in the case a soft-masked interrupt is found pending, to recover the MSR so the interrupt can be replayed before attempting to exit again. If the condition changes between these two tests, the MSR and irq soft-mask state will become corrupted, leading to warnings and possible crashes. For example, if the branch is initially true then false, MSR[EE] will be 0 but PACAIRQHARDDIS clear and EE may not get enabled, leading to warnings in irq64.c.

References

Affected packages

Debian:12 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.1.12-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:13 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.1.12-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}