| Package | Affected versions | Patched versions |
|---|---|---|
| kernel | ≥ 5.2, < 5.2.05.27.25≥ 5.3, < 5.3.05.36.25≥ 5.4, < 5.4.05.44.25≥ 5.5, < 5.5.05.52.25 | 5.2.05.27.255.3.05.36.255.4.05.44.255.5.05.52.25 |
DMA transactions which are targeted at input buffers used for the NvmExpressDxe software SMI handler could cause SMRAM corruption through a TOCTOU attack. DMA transactions which are targeted at input buffers used for the software SMI handler used by the NvmExpressDxe driver could cause SMRAM corruption through a TOCTOU attack. This issue was discovered by Insyde engineering based on the general description provided by Intel's iSTARE group. This issue was fixed in kernel 5.2: 05.27.25, kernel 5.3: 05.36.25, kernel 5.4: 05.44.25, kernel 5.5: 05.52.25 https://www.insyde.com/security-pledge/SA-2022055
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