Public bug reported:
[Impact]
There is a potential for memory corruption in MSI payloads. For reasons
mentioned in the commit message, this happens to not be triggerable today, but
is fragile, and could rear it's ugly head if a struct layout changes due to
other backports in the future.
[Test Case]
Regression-only.
[Fix]
84a9a75774961 iommu/arm-smmu-v3: Avoid memory corruption from Hisilicon MSI
payloads
[Regression Risk]
The fix is to add some explicit padding into an internal structure. This
padding is already implicit today.
** Affects: linux (Ubuntu)
Importance: Medium
Status: Fix Released
** Affects: linux (Ubuntu Bionic)
Importance: Undecided
Assignee: dann frazier (dannf)
Status: In Progress
** Affects: linux (Ubuntu Cosmic)
Importance: Undecided
Assignee: dann frazier (dannf)
Status: In Progress
** Affects: linux (Ubuntu Disco)
Importance: Medium
Status: Fix Released
** Also affects: linux (Ubuntu Disco)
Importance: Medium
Assignee: dann frazier (dannf)
Status: Fix Released
** Also affects: linux (Ubuntu Cosmic)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Bionic)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Cosmic)
Status: New => In Progress
** Changed in: linux (Ubuntu Bionic)
Status: New => In Progress
** Changed in: linux (Ubuntu Bionic)
Assignee: (unassigned) => dann frazier (dannf)
** Changed in: linux (Ubuntu Cosmic)
Assignee: (unassigned) => dann frazier (dannf)
** Changed in: linux (Ubuntu Disco)
Assignee: dann frazier (dannf) => (unassigned)
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https://bugs.launchpad.net/bugs/1819546
Title:
Avoid potential memory corruption on HiSilicon SoCs
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Bionic:
In Progress
Status in linux source package in Cosmic:
In Progress
Status in linux source package in Disco:
Fix Released
Bug description:
[Impact]
There is a potential for memory corruption in MSI payloads. For reasons
mentioned in the commit message, this happens to not be triggerable today, but
is fragile, and could rear it's ugly head if a struct layout changes due to
other backports in the future.
[Test Case]
Regression-only.
[Fix]
84a9a75774961 iommu/arm-smmu-v3: Avoid memory corruption from Hisilicon MSI
payloads
[Regression Risk]
The fix is to add some explicit padding into an internal structure. This
padding is already implicit today.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1819546/+subscriptions
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