DEBIAN-CVE-2023-52831

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Source
https://security-tracker.debian.org/tracker/DEBIAN-CVE-2023-52831
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-52831.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2023-52831
Upstream
Published
2024-05-21T16:15:20Z
Modified
2025-09-19T07:33:35.293071Z
Summary
[none]
Details

In the Linux kernel, the following vulnerability has been resolved: cpu/hotplug: Don't offline the last non-isolated CPU If a system has isolated CPUs via the "isolcpus=" command line parameter, then an attempt to offline the last housekeeping CPU will result in a WARNON() when rebuilding the scheduler domains and a subsequent panic due to and unhandled empty CPU mas in partitionscheddomainslocked(). cpusethotplugworkfn() rebuildscheddomainslocked() ndoms = generatescheddomains(&doms, &attr); cpumaskand(doms[0], topcpuset.effectivecpus, housekeepingcpumask(HKFLAGDOMAIN)); Thus results in an empty CPU mask which triggers the warning and then the subsequent crash: WARNING: CPU: 4 PID: 80 at kernel/sched/topology.c:2366 buildscheddomains+0x120c/0x1408 Call trace: buildscheddomains+0x120c/0x1408 partitionscheddomainslocked+0x234/0x880 rebuildscheddomainslocked+0x37c/0x798 rebuildscheddomains+0x30/0x58 cpusethotplugworkfn+0x2a8/0x930 Unable to handle kernel paging request at virtual address fffe80027ab37080 partitionscheddomainslocked+0x318/0x880 rebuildscheddomains_locked+0x37c/0x798 Aside of the resulting crash, it does not make any sense to offline the last last housekeeping CPU. Prevent this by masking out the non-housekeeping CPUs when selecting a target CPU for initiating the CPU unplug operation via the work queue.

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
6.1.64-1

Affected versions

6.*

6.1.27-1
6.1.37-1
6.1.38-1
6.1.38-2~bpo11+1
6.1.38-2
6.1.38-3
6.1.38-4~bpo11+1
6.1.38-4
6.1.52-1
6.1.55-1~bpo11+1
6.1.55-1

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
6.6.8-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14 / 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
6.6.8-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}