CVE-2026-43220
- Source
- https://cve.org/CVERecord?id=CVE-2026-43220
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-43220.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2026-43220
- Downstream
- Related
- Published
- 2026-05-06T11:28:20Z
- Modified
- 2026-08-27T18:27:29Z
- Summary
- iommu/amd: serialize sequence allocation under concurrent TLB invalidations
- Details
-
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.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43220.json" }- References
-
- https://git.kernel.org/stable/c/48caa7542a795c9679ec1bd1bc2592e05a7369a4
- https://git.kernel.org/stable/c/5000ce7fcb31067566a1a1a2e5b5bbff93625242
- https://git.kernel.org/stable/c/9e249c48412828e807afddc21527eb734dc9bd3d
- https://git.kernel.org/stable/c/d51bf43193b1e95dc4e34e540dc76e19def2ae5a
- https://git.kernel.org/stable/c/fca7aa0264ae99e5ff287d0ced5af0b82b121c4f
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43220.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-43220
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedf2f65b28d802a667119147444ec2ae33eebf9a58Fixedd51bf43193b1e95dc4e34e540dc76e19def2ae5a
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced715c263119fd1b918a9fcbd8a36ea5b604a46324Fixedfca7aa0264ae99e5ff287d0ced5af0b82b121c4f
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducede15768e68820142077bbca402d8e902f64ade1b0Fixed5000ce7fcb31067566a1a1a2e5b5bbff93625242
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced496269d12072ecb219826485bdbec70c92a8eef5Fixed48caa7542a795c9679ec1bd1bc2592e05a7369a4
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedd2a0cac10597068567d336e85fa3cbdbe8ca62bfFixed9e249c48412828e807afddc21527eb734dc9bd3d