CVE Explorer

CVE-2026-43253

In the Linux kernel, the following vulnerability has been resolved: iommu/amd: move wait_on_sem() out of spinlock With iommu.strict=1, the existing completion wait path can cause soft lockups under stressed environment, as wait_on_sem() busy-waits under the spinlock with interrupts disabled. Move the completion wait in iommu_completion_wait() out of the spinlock. wait_on_sem() only polls the hardware-updated cmd_sem and does not require iommu->lock, so holding the lock during the busy wait un

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:038d91d0b0f5d4fcb5405f6a2b7a9c8b5d8643182fb1bdf1abdd19cf4b276cf7

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/iommu/amd/iommu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"f2f65b28d802a667119147444ec2ae33eebf9a58","status":"affected","version":"4bf5beef578e46393f11eb69dda7d17a065e05ff","versionType":"git"},{"lessThan":"715c263119fd1b918a9fcbd8a36ea5b604a46324","status":"affected","version":"4bf5beef578e46393f11eb69dda7d17a065e05ff","versionType":"git"},{"lessThan":"e15768e68820142077bbca402d8e902f64ade1b0","status":"affected","version":"4bf5beef578e46393f11…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:04f2cea82c1ea1d9c2f92c2a683dbd8e1730f26ee0dc20d2e2e9a764d6bf460b · sha256:26831422ce98873c… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/iommu/amd/iommu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.9"},{"lessThan":"4.9","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.128","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.75","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.16","versionType":"semver"},{"lessTha…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:04f2cea82c1ea1d9c2f92c2a683dbd8e1730f26ee0dc20d2e2e9a764d6bf460b · sha256:26831422ce98873c… · /containers/cna/affected/1

Affected products and versions

2 source assertions

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:04f2cea82c1ea1d9c2f92c2a683dbd8e1730f26ee0dc20d2e2e9a764d6bf460b · sha256:26831422ce98873c… · /containers/cna/affected/0

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:04f2cea82c1ea1d9c2f92c2a683dbd8e1730f26ee0dc20d2e2e9a764d6bf460b · sha256:26831422ce98873c… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion

{"metric":{"baseScore":7.5,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:04f2cea82c1ea1d9c2f92c2a683dbd8e1730f26ee0dc20d2e2e9a764d6bf460b · sha256:26831422ce98873c… · /containers/cna/metrics/0/cvssV3_1

Source references

5 source assertions

{"url":"https://git.kernel.org/stable/c/496269d12072ecb219826485bdbec70c92a8eef5"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:04f2cea82c1ea1d9c2f92c2a683dbd8e1730f26ee0dc20d2e2e9a764d6bf460b · sha256:26831422ce98873c… · /containers/cna/references/3

{"url":"https://git.kernel.org/stable/c/715c263119fd1b918a9fcbd8a36ea5b604a46324"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:04f2cea82c1ea1d9c2f92c2a683dbd8e1730f26ee0dc20d2e2e9a764d6bf460b · sha256:26831422ce98873c… · /containers/cna/references/1

{"url":"https://git.kernel.org/stable/c/d2a0cac10597068567d336e85fa3cbdbe8ca62bf"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:04f2cea82c1ea1d9c2f92c2a683dbd8e1730f26ee0dc20d2e2e9a764d6bf460b · sha256:26831422ce98873c… · /containers/cna/references/4

{"url":"https://git.kernel.org/stable/c/e15768e68820142077bbca402d8e902f64ade1b0"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:04f2cea82c1ea1d9c2f92c2a683dbd8e1730f26ee0dc20d2e2e9a764d6bf460b · sha256:26831422ce98873c… · /containers/cna/references/2

{"url":"https://git.kernel.org/stable/c/f2f65b28d802a667119147444ec2ae33eebf9a58"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:04f2cea82c1ea1d9c2f92c2a683dbd8e1730f26ee0dc20d2e2e9a764d6bf460b · sha256:26831422ce98873c… · /containers/cna/references/0

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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