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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 w
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:7d3e7cfce5430f4b41c58952a19b5590201e9b015a54c74100f5d9728afa4b92
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/iommu/amd/amd_iommu_types.h","drivers/iommu/amd/init.c","drivers/iommu/amd/iommu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"6.6.140","status":"affected","version":"6.6.128","versionType":"semver"},{"lessThan":"6.12.88","status":"affected","version":"6.12.75","versionType":"semver"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:32fa92ce232c7938d72427cc5d121fc8443f5e7f6d73a3ca950963ff0d71576d · sha256:ad05e691f08daa94… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/iommu/amd/amd_iommu_types.h","drivers/iommu/amd/init.c","drivers/iommu/amd/iommu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"d51bf43193b1e95dc4e34e540dc76e19def2ae5a","status":"affected","version":"f2f65b28d802a667119147444ec2ae33eebf9a58","versionType":"git"},{"lessThan":"fca7aa0264ae99e5ff287d0ced5af0b82b121c4f","status":"affected","version":"715c263119fd1b918a9fcbd8a36ea5b604a46324","versionType":"git"},{"lessThan":"5000ce7fcb31067566a1a1a2e5b5…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:32fa92ce232c7938d72427cc5d121fc8443f5e7f6d73a3ca950963ff0d71576d · sha256:ad05e691f08daa94… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/iommu/amd/amd_iommu_types.h","drivers/iommu/amd/init.c","drivers/iommu/amd/iommu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"6.6.140","status":"affected","version":"6.6.128","versionType":"semver"},{"lessThan":"6.12.88","status":"affected","version":"6.12.75","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:32fa92ce232c7938d72427cc5d121fc8443f5e7f6d73a3ca950963ff0d71576d · sha256:ad05e691f08daa94… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/iommu/amd/amd_iommu_types.h","drivers/iommu/amd/init.c","drivers/iommu/amd/iommu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"d51bf43193b1e95dc4e34e540dc76e19def2ae5a","status":"affected","version":"f2f65b28d802a667119147444ec2ae33eebf9a58","versionType":"git"},{"lessThan":"fca7aa0264ae99e5ff287d0ced5af0b82b121c4f","status":"affected","version":"715c263119fd1b918a9fcbd8a36ea5b604a46324","versionType":"git"},{"lessThan":"5000ce7fcb31067566a1a1a2e5b5…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:32fa92ce232c7938d72427cc5d121fc8443f5e7f6d73a3ca950963ff0d71576d · sha256:ad05e691f08daa94… · /containers/cna/affected/0

Source references

5 source assertions
{"url":"https://git.kernel.org/stable/c/48caa7542a795c9679ec1bd1bc2592e05a7369a4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:32fa92ce232c7938d72427cc5d121fc8443f5e7f6d73a3ca950963ff0d71576d · sha256:ad05e691f08daa94… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/5000ce7fcb31067566a1a1a2e5b5bbff93625242"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:32fa92ce232c7938d72427cc5d121fc8443f5e7f6d73a3ca950963ff0d71576d · sha256:ad05e691f08daa94… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/9e249c48412828e807afddc21527eb734dc9bd3d"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:32fa92ce232c7938d72427cc5d121fc8443f5e7f6d73a3ca950963ff0d71576d · sha256:ad05e691f08daa94… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/d51bf43193b1e95dc4e34e540dc76e19def2ae5a"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:32fa92ce232c7938d72427cc5d121fc8443f5e7f6d73a3ca950963ff0d71576d · sha256:ad05e691f08daa94… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/fca7aa0264ae99e5ff287d0ced5af0b82b121c4f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:32fa92ce232c7938d72427cc5d121fc8443f5e7f6d73a3ca950963ff0d71576d · sha256:ad05e691f08daa94… · /containers/cna/references/1

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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