CVE-2026-43220
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
iommu/amd: serialize sequence allocation under concurrent TLB invalidations
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| f2f65b28d802a667119147444ec2ae33eebf9a58 | affected | git | d51bf43193b1e95dc4e34e540dc76e19def2ae5a | Unavailable | None listed |
| 715c263119fd1b918a9fcbd8a36ea5b604a46324 | affected | git | fca7aa0264ae99e5ff287d0ced5af0b82b121c4f | Unavailable | None listed |
| e15768e68820142077bbca402d8e902f64ade1b0 | affected | git | 5000ce7fcb31067566a1a1a2e5b5bbff93625242 | Unavailable | None listed |
| 496269d12072ecb219826485bdbec70c92a8eef5 | affected | git | 48caa7542a795c9679ec1bd1bc2592e05a7369a4 | Unavailable | None listed |
| d2a0cac10597068567d336e85fa3cbdbe8ca62bf | affected | git | 9e249c48412828e807afddc21527eb734dc9bd3d | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 6.6.128 | affected | semver | 6.6.140 | Unavailable | None listed |
| 6.12.75 | affected | semver | 6.12.88 | Unavailable | None listed |