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CVE PROGRAM SOURCE RECORD7.8 High

CVE-2022-49411

bfq: Make sure bfqg for which we are queueing requests is online

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: bfq: Make sure bfqg for which we are queueing requests is online Bios queued into BFQ IO scheduler can be associated with a cgroup that was already offlined. This may then cause insertion of this bfq_group into a service tree. But this bfq_group will get freed as soon as last bio associated with it is completed leading to use after free issues for service tree users. Fix the problem by making sure we always operate on online bfq_group. If the bfq_group associated with the bio is not online, we pick the first online parent.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • e21b7a0b988772e82e7147e1c659a5afe2ae003c to < ccddf8cd411c1800863ed357064e56ceffd356bbaffected
  • e21b7a0b988772e82e7147e1c659a5afe2ae003c to < 51f724bffa3403a5236597e6b75df7329c1ec6e9affected
  • e21b7a0b988772e82e7147e1c659a5afe2ae003c to < 6ee0868b0c3ccead5907685fcdcdd0c08dfe4b0baffected
  • e21b7a0b988772e82e7147e1c659a5afe2ae003c to < 97bd6c56bdcb41079e488e31df56809e3b2ce628affected
  • e21b7a0b988772e82e7147e1c659a5afe2ae003c to < 7781c38552e6cc54ed8e9040279561340516b881affected
  • e21b7a0b988772e82e7147e1c659a5afe2ae003c to < 075a53b78b815301f8d3dd1ee2cd99554e34f0ddaffected

Linux Linux

Default version status: affected

  • 4.12affected
  • 0 to < 4.12unaffected
  • 5.4.198 to ≤ 5.4.*unaffected
  • 5.10.121 to ≤ 5.10.*unaffected
  • 5.15.46 to ≤ 5.15.*unaffected
  • 5.17.14 to ≤ 5.17.*unaffected
  • 5.18.3 to ≤ 5.18.*unaffected
  • 5.19 to ≤ *unaffected

References