DEBIAN-CVE-2025-21759

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Source
https://security-tracker.debian.org/tracker/DEBIAN-CVE-2025-21759
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-21759.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2025-21759
Upstream
Published
2025-02-27T03:15:16Z
Modified
2025-09-18T05:18:13Z
Summary
[none]
Details

In the Linux kernel, the following vulnerability has been resolved: ipv6: mcast: extend RCU protection in igmp6send() igmp6send() can be called without RTNL or RCU being held. Extend RCU protection so that we can safely fetch the net pointer and avoid a potential UAF. Note that we no longer can use sockallocsendskb() because ipv6.igmpsk uses GFPKERNEL allocations which can sleep. Instead use allocskb() and charge the net->ipv6.igmp_sk socket under RCU protection.

References

Affected packages

Debian:11 / linux

Package

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

Affected ranges

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / linux

Package

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

Affected ranges

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
6.12.16-1

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
6.12.16-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}