このページは Ubuntu 向けの修正状況です。脆弱性そのものの説明は CVE 本体のページにあります。
CVE-2026-89558 の詳細 →
UBUNTU-CVE-2026-89558
In the Linux kernel, the following vulnerability has been resolved: md/raid10: fix still_degraded being inverted in raid10_sync_request() Commit fe6a1...
原文の説明
取得元が公開している説明をそのまま載せています (多くは英語)。
In the Linux kernel, the following vulnerability has been resolved: md/raid10: fix still_degraded being inverted in raid10_sync_request() Commit fe6a19d40ceb ("md/md-bitmap: merge md_bitmap_start_sync() into bitmap_operations") converted still_degraded from int to bool, but inverted the assignment in the loop that checks whether the array will still be degraded after the current device is recovered: "still_degraded = 1" became "still_degraded = false". As a result, recovering a device while another mirror is still missing calls md_bitmap_start_sync() with degraded == false, which clears bitmap bits that the still-missing device needs. When that device is re-added, its bitmap-based recovery finds the bits already cleared and skips every region written while the array was degraded, so it is marked In_sync while holding stale data: silent corruption. Reproducer (raid10 near=2, 4 disks, internal bitmap): - fail and remove one disk of each mirror pair - write to the degraded array - re-add both disks and let recovery finish - "check" reports mismatch_cnt=262272 after 256 MiB of degraded writes and file contents differ; the second disk's "recovery" completes in milliseconds because everything is skipped The same conversion in raid1 got it right (still_degraded = true). Restore the correct value.
出典: OSV.dev (Open Source Vulnerabilities) OSV
影響パッケージ
Ubuntu:16.04:LTS
linux-hwe-edge
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Ubuntu:18.04:LTS
linux-aws-5.0
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Ubuntu:18.04:LTS
linux-aws-5.3
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Ubuntu:18.04:LTS
linux-azure
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Ubuntu:18.04:LTS
linux-azure-5.3
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Ubuntu:18.04:LTS
linux-azure-edge
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Ubuntu:18.04:LTS
linux-gcp
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Ubuntu:18.04:LTS
linux-gcp-5.3
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Ubuntu:18.04:LTS
linux-gke-4.15
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Ubuntu:18.04:LTS
linux-gke-5.4
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Ubuntu:18.04:LTS
linux-gkeop-5.4
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Ubuntu:18.04:LTS
linux-hwe
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Ubuntu:18.04:LTS
linux-hwe-edge
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Ubuntu:18.04:LTS
linux-oem
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Ubuntu:18.04:LTS
linux-oracle-5.0
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Ubuntu:18.04:LTS
linux-oracle-5.3
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Ubuntu:20.04:LTS
linux-aws-5.11
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Ubuntu:20.04:LTS
linux-aws-5.13
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Ubuntu:20.04:LTS
linux-aws-5.8
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Ubuntu:20.04:LTS
linux-azure-5.11
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Ubuntu:20.04:LTS
linux-azure-5.13
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:20.04:LTS
linux-azure-5.8
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:20.04:LTS
linux-azure-fde
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Ubuntu:20.04:LTS
linux-gcp-5.11
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Ubuntu:20.04:LTS
linux-gcp-5.13
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:20.04:LTS
linux-gcp-5.8
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:20.04:LTS
linux-gke
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Ubuntu:20.04:LTS
linux-gke-5.15
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Ubuntu:20.04:LTS
linux-gkeop
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Ubuntu:20.04:LTS
linux-gkeop-5.15
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Ubuntu:20.04:LTS
linux-hwe-5.11
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Ubuntu:20.04:LTS
linux-hwe-5.13
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Ubuntu:20.04:LTS
linux-hwe-5.8
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Ubuntu:20.04:LTS
linux-intel-5.13
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Ubuntu:20.04:LTS
linux-oem-5.10
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Ubuntu:20.04:LTS
linux-oem-5.13
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Ubuntu:20.04:LTS
linux-oem-5.14
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:20.04:LTS
linux-oem-5.6
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:20.04:LTS
linux-oracle-5.11
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:20.04:LTS
linux-oracle-5.13
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:20.04:LTS
linux-oracle-5.8
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:20.04:LTS
linux-raspi2
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:20.04:LTS
linux-riscv
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:20.04:LTS
linux-riscv-5.11
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:20.04:LTS
linux-riscv-5.8
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Ubuntu:22.04:LTS
linux-allwinner-5.19
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Ubuntu:22.04:LTS
linux-aws-5.19
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:22.04:LTS
linux-aws-6.2
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:22.04:LTS
linux-aws-6.5
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:22.04:LTS
linux-azure-5.19
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:22.04:LTS
linux-azure-6.2
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:22.04:LTS
linux-azure-6.5
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:22.04:LTS
linux-azure-fde-5.19
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:22.04:LTS
linux-azure-fde-6.2
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:22.04:LTS
linux-gcp-5.19
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:22.04:LTS
linux-gcp-6.2
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:22.04:LTS
linux-gcp-6.5
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:22.04:LTS
linux-hwe-5.19
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:22.04:LTS
linux-hwe-6.2
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Ubuntu:22.04:LTS
linux-hwe-6.5
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Ubuntu:22.04:LTS
linux-intel-iot-realtime
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Ubuntu:22.04:LTS
linux-lowlatency-hwe-5.19
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Ubuntu:22.04:LTS
linux-lowlatency-hwe-6.2
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Ubuntu:22.04:LTS
linux-lowlatency-hwe-6.5
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:22.04:LTS
linux-nvidia-6.2
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:22.04:LTS
linux-nvidia-6.5
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:22.04:LTS
linux-oem-5.17
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Ubuntu:22.04:LTS
linux-oem-6.0
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:22.04:LTS
linux-oem-6.1
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Ubuntu:22.04:LTS
linux-oem-6.5
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:22.04:LTS
linux-oracle-6.5
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Ubuntu:22.04:LTS
linux-realtime
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Ubuntu:22.04:LTS
linux-riscv
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Ubuntu:22.04:LTS
linux-riscv-5.19
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Ubuntu:22.04:LTS
linux-riscv-6.5
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Ubuntu:22.04:LTS
linux-starfive-5.19
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Ubuntu:22.04:LTS
linux-starfive-6.2
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Ubuntu:22.04:LTS
linux-starfive-6.5
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Ubuntu:24.04:LTS
linux-aws-6.14
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Ubuntu:24.04:LTS
linux-aws-6.17
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:24.04:LTS
linux-aws-7.0
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:24.04:LTS
linux-azure-6.11
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:24.04:LTS
linux-azure-6.14
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:24.04:LTS
linux-azure-6.17
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Ubuntu:24.04:LTS
linux-azure-7.0
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Ubuntu:24.04:LTS
linux-azure-fde-6.14
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Ubuntu:24.04:LTS
linux-azure-fde-6.17
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Ubuntu:24.04:LTS
linux-azure-fde-7.0
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Ubuntu:24.04:LTS
linux-azure-nvidia-6.14
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Ubuntu:24.04:LTS
linux-gcp-6.11
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Ubuntu:24.04:LTS
linux-gcp-6.14
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Ubuntu:24.04:LTS
linux-gcp-6.17
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Ubuntu:24.04:LTS
linux-gcp-7.0
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Ubuntu:24.04:LTS
linux-hwe-6.11
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Ubuntu:24.04:LTS
linux-hwe-6.14
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Ubuntu:24.04:LTS
linux-hwe-6.17
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:24.04:LTS
linux-hwe-7.0
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Ubuntu:24.04:LTS
linux-lowlatency-hwe-6.11
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Ubuntu:24.04:LTS
linux-nvidia-6.11
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Ubuntu:24.04:LTS
linux-nvidia-6.17
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Ubuntu:24.04:LTS
linux-nvidia-7.0
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Ubuntu:24.04:LTS
linux-oem-6.11
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Ubuntu:24.04:LTS
linux-oem-6.14
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Ubuntu:24.04:LTS
linux-oem-6.17
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Ubuntu:24.04:LTS
linux-oem-6.8
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Ubuntu:24.04:LTS
linux-oracle-6.14
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:24.04:LTS
linux-oracle-6.17
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Ubuntu:24.04:LTS
linux-oracle-7.0
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Ubuntu:24.04:LTS
linux-raspi-realtime
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Ubuntu:24.04:LTS
linux-realtime
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Ubuntu:24.04:LTS
linux-riscv
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Ubuntu:24.04:LTS
linux-riscv-6.14
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Ubuntu:24.04:LTS
linux-riscv-6.17
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Ubuntu:24.04:LTS
linux-riscv-7.0
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Ubuntu:Pro:Realtime:24.04:LTS
linux-realtime-6.14
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Ubuntu:Pro:Realtime:24.04:LTS
linux-realtime-6.17
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Ubuntu:26.04:LTS
linux
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Ubuntu:26.04:LTS
linux-aws
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Ubuntu:26.04:LTS
linux-azure
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:26.04:LTS
linux-azure-fde
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:26.04:LTS
linux-gcp
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Ubuntu:26.04:LTS
linux-gke
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Ubuntu:26.04:LTS
linux-ibm
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Ubuntu:26.04:LTS
linux-nvidia
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:26.04:LTS
linux-nvidia-bos
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:26.04:LTS
linux-oem-7.0
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:26.04:LTS
linux-oracle
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:26.04:LTS
linux-raspi
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:26.04:LTS
linux-realtime
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:26.04:LTS
linux-riscv
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
参照URL
- report ubuntu.com
- report cve.org
- report git.kernel.org
- report git.kernel.org
- report git.kernel.org
- report git.kernel.org
- report git.kernel.org