CVE-2024-27066

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Source
https://nvd.nist.gov/vuln/detail/CVE-2024-27066
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-27066.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2024-27066
Related
Published
2024-05-01T13:15:50Z
Modified
2024-09-18T03:26:09.100872Z
Summary
[none]
Details

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

virtio: packed: fix unmap leak for indirect desc table

When usedmaapi and premapped are true, then the do_unmap is false.

Because the dounmap is false, vringunmapextrapacked is not called by detachbufpacked.

if (unlikely(vq->dounmap)) { curr = id; for (i = 0; i < state->num; i++) { vringunmapextrapacked(vq, &vq->packed.descextra[curr]); curr = vq->packed.descextra[curr].next; } }

So the indirect desc table is not unmapped. This causes the unmap leak.

So here, we check vq->usedmaapi instead. Synchronously, dma info is updated based on usedmaapi judgment

This bug does not occur, because no driver use the premapped with indirect.

References

Affected packages

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
6.7.12-1

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
6.1.64-1
6.1.66-1
6.1.67-1
6.1.69-1~bpo11+1
6.1.69-1
6.1.76-1~bpo11+1
6.1.76-1
6.1.82-1
6.1.85-1
6.1.90-1~bpo11+1
6.1.90-1
6.1.94-1~bpo11+1
6.1.94-1
6.1.98-1
6.1.99-1
6.1.106-1
6.1.106-2
6.1.106-3
6.3.1-1~exp1
6.3.2-1~exp1
6.3.4-1~exp1
6.3.5-1~exp1
6.3.7-1~bpo12+1
6.3.7-1
6.3.11-1
6.4~rc6-1~exp1
6.4~rc7-1~exp1
6.4.1-1~exp1
6.4.4-1~bpo12+1
6.4.4-1
6.4.4-2
6.4.4-3~bpo12+1
6.4.4-3
6.4.11-1
6.4.13-1
6.5~rc4-1~exp1
6.5~rc6-1~exp1
6.5~rc7-1~exp1
6.5.1-1~exp1
6.5.3-1~bpo12+1
6.5.3-1
6.5.6-1
6.5.8-1
6.5.10-1~bpo12+1
6.5.10-1
6.5.13-1
6.6.3-1~exp1
6.6.4-1~exp1
6.6.7-1~exp1
6.6.8-1
6.6.9-1
6.6.11-1
6.6.13-1~bpo12+1
6.6.13-1
6.6.15-1
6.6.15-2
6.7-1~exp1
6.7.1-1~exp1
6.7.4-1~exp1
6.7.7-1
6.7.9-1
6.7.9-2
6.7.12-1~bpo12+1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}