DEBIAN-CVE-2026-43220
In the Linux kernel, the following vulnerability has been resolved: iommu/amd: serialize sequence allocation under concurrent TLB invalidations With concurrent TLB invalidations, completion wait randomly gets timed out because cmd_sem_val was incremented outside the IOMMU spinlock, allowing CMD_COMPL_WAIT commands to be queued out of sequence and breaking the ordering assumption in wait_on_sem(). Move the cmd_sem_val increment under iommu->lock so completion sequence allocation is serialized with command queuing. And remove the unnecessary return.
DEBIAN-CVE-2026-43220
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-43220
linux
Source reference: /affected/0/package/name
- Affected versions
- 6.12.38-1
Source reference:
/affected/0/versions6.12.41-1Source reference:
/affected/0/versions6.12.43-1Source reference:
/affected/0/versions6.12.43-1~bpo12+1Source reference:
/affected/0/versions6.12.48-1Source reference:
/affected/0/versions6.12.57-1Source reference:
/affected/0/versions6.12.57-1~bpo12+1Source reference:
/affected/0/versions6.12.63-1Source reference:
/affected/0/versions6.12.63-1~bpo12+1Source reference:
/affected/0/versions6.12.69-1Source reference:
/affected/0/versions6.12.69-1~bpo12+1Source reference:
/affected/0/versions6.12.73-1Source reference:
/affected/0/versions6.12.73-1~bpo12+1Source reference:
/affected/0/versions6.12.74-1Source reference:
/affected/0/versions6.12.74-2Source reference:
/affected/0/versions6.12.74-2~bpo12+1Source reference:
/affected/0/versions6.12.85-1Source reference:
/affected/0/versions6.12.85-1~bpo12+1Source reference:
/affected/0/versions6.12.86-1Source reference:
/affected/0/versions6.12.86-1~bpo12+1Source reference:
/affected/0/versions6.12.88-1~bpo12+1Source reference:
/affected/0/versions - Fixed versions
- 6.12.88-1
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "6.12.88-1"
}
]
}
],
"package": {
"name": "linux",
"purl": "pkg:deb/debian/linux?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"6.12.38-1",
"6.12.41-1",
"6.12.43-1",
"6.12.43-1~bpo12+1",
"6.12.48-1",
"6.12.57-1",
"6.12.57-1~bpo12+1",
"6.12.63-1",
"6.12.63-1~bpo12+1",
"6.12.69-1",
"6.12.69-1~bpo12+1",
"6.12.73-1",
"6.12.73-1~bpo12+1",
"6.12.74-1",
"6.12.74-2",
"6.12.74-2~bpo12+1",
"6.12.85-1",
"6.12.85-1~bpo12+1",
"6.12.86-1",
"6.12.86-1~bpo12+1",
"6.12.88-1~bpo12+1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-43220.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #56998 · Revision 1
- Added to Heist Feed
- Publisher date