Ubuntu.comUB:CVE-2021-47325CVE-2021-47325
In the Linux kernel, the following vulnerability has been resolved:
iommu/arm-smmu: Fix arm_smmu_device refcount leak in address translation
The reference counting issue happens in several exception handling paths of
arm_smmu_iova_to_phys_hard(). When those error scenarios occur, the
function forgets to decrease the refcount of “smmu” increased by
arm_smmu_rpm_get(), causing a refcount leak. Fix this issue by jumping to
“out” label when those error scenarios occur.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 18.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 22.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 23.10 | noarch | linux | < any | UNKNOWN |
| ubuntu | 24.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 14.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 16.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 18.04 | noarch | linux-aws | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-aws | < any | UNKNOWN |
| ubuntu | 22.04 | noarch | linux-aws | < any | UNKNOWN |
References
git.kernel.org/linus/7c8f176d6a3fa18aa0f8875da6f7c672ed2a8554 (5.14-rc1)
git.kernel.org/stable/c/0f0c5ea09139777d90729d408b807021f2ea6492
git.kernel.org/stable/c/43d1aaa1965f9b58035196dac49b1e1e6c9c25eb
git.kernel.org/stable/c/5f9741a9a91f25c89e04b408cd61e3ab050ce24b
git.kernel.org/stable/c/7c8f176d6a3fa18aa0f8875da6f7c672ed2a8554
git.kernel.org/stable/c/b11220803ad14a2a880cc06d8e01fe2548cc85b0
launchpad.net/bugs/cve/CVE-2021-47325
nvd.nist.gov/vuln/detail/CVE-2021-47325
security-tracker.debian.org/tracker/CVE-2021-47325
www.cve.org/CVERecord?id=CVE-2021-47325
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