CVE-2022-49675

See a problem?
Please try reporting it to the source first.
Source
https://nvd.nist.gov/vuln/detail/CVE-2022-49675
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-49675.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2022-49675
Related
Published
2025-02-26T07:01:42Z
Modified
2025-02-26T19:03:51.071315Z
Summary
[none]
Details

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

tick/nohz: unexport _init-annotated ticknohzfullsetup()

EXPORTSYMBOL and _init is a bad combination because the .init.text section is freed up after the initialization. Hence, modules cannot use symbols annotated __init. The access to a freed symbol may end up with kernel panic.

modpost used to detect it, but it had been broken for a decade.

Commit 28438794aba4 ("modpost: fix section mismatch check for exported init/exit sections") fixed it so modpost started to warn it again, then this showed up:

MODPOST vmlinux.symvers

WARNING: modpost: vmlinux.o(_ksymtabgpl+ticknohzfullsetup+0x0): Section mismatch in reference from the variable _ksymtabticknohzfullsetup to the function .init.text:ticknohzfullsetup() The symbol ticknohzfullsetup is exported and annotated _init Fix this by removing the _init annotation of ticknohzfullsetup or drop the export.

Drop the export because ticknohzfull_setup() is only called from the built-in code in kernel/sched/isolation.c.

References

Affected packages

Debian:11 / 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
5.10.136-1

Affected versions

5.*

5.10.46-4
5.10.46-5
5.10.70-1~bpo10+1
5.10.70-1
5.10.84-1
5.10.92-1~bpo10+1
5.10.92-1
5.10.92-2
5.10.103-1~bpo10+1
5.10.103-1
5.10.106-1
5.10.113-1
5.10.120-1~bpo10+1
5.10.120-1
5.10.127-1
5.10.127-2~bpo10+1
5.10.127-2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

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
5.18.14-1

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
5.18.14-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}