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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-2026-53241 の詳細 →
カテゴリ
UBUNTU-CVE-2026-53241

In the Linux kernel, the following vulnerability has been resolved: ALSA: seq: dummy: fix UMP event stack overread The dummy sequencer port forwards e...

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: ALSA: seq: dummy: fix UMP event stack overread The dummy sequencer port forwards events by copying an incoming struct snd_seq_event into a stack temporary, rewriting source and destination, and dispatching the temporary to subscribers. That legacy event storage is smaller than struct snd_seq_ump_event. When a UMP event reaches the dummy client, the copy leaves the UMP flag set but only provides legacy-sized stack storage. The subscriber delivery path then uses snd_seq_event_packet_size() and copies a UMP-sized packet from that stack object, reading past the end of the temporary. Use the existing union __snd_seq_event storage and copy the packet size reported for the incoming event before rewriting the common routing fields. This preserves the full UMP packet for UMP events while keeping legacy event handling unchanged.

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
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Ubuntu:20.04:LTS linux-azure-5.8
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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
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Ubuntu:20.04:LTS linux-gcp-5.8
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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
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Ubuntu:20.04:LTS linux-oem-5.6
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Ubuntu:20.04:LTS linux-oracle-5.11
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Ubuntu:20.04:LTS linux-oracle-5.13
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Ubuntu:20.04:LTS linux-oracle-5.8
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Ubuntu:20.04:LTS linux-raspi2
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Ubuntu:20.04:LTS linux-riscv
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Ubuntu:20.04:LTS linux-riscv-5.11
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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
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Ubuntu:22.04:LTS linux-aws-6.2
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Ubuntu:22.04:LTS linux-aws-6.5
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Ubuntu:22.04:LTS linux-azure-5.19
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Ubuntu:22.04:LTS linux-azure-6.2
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Ubuntu:22.04:LTS linux-azure-6.5
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Ubuntu:22.04:LTS linux-azure-fde-5.19
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Ubuntu:22.04:LTS linux-azure-fde-6.2
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Ubuntu:22.04:LTS linux-gcp-5.19
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Ubuntu:22.04:LTS linux-gcp-6.2
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Ubuntu:22.04:LTS linux-gcp-6.5
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Ubuntu:22.04:LTS linux-hwe-5.19
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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
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Ubuntu:22.04:LTS linux-nvidia-6.2
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Ubuntu:22.04:LTS linux-nvidia-6.5
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Ubuntu:22.04:LTS linux-oem-5.17
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Ubuntu:22.04:LTS linux-oem-6.0
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Ubuntu:22.04:LTS linux-oem-6.1
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Ubuntu:22.04:LTS linux-oem-6.5
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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
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Ubuntu:24.04:LTS linux-aws-7.0
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Ubuntu:24.04:LTS linux-azure-6.11
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Ubuntu:24.04:LTS linux-azure-6.14
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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-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
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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
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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:25.10 linux
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Ubuntu:25.10 linux-aws
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Ubuntu:25.10 linux-azure
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Ubuntu:25.10 linux-azure-fde
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Ubuntu:25.10 linux-gcp
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Ubuntu:25.10 linux-oracle
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Ubuntu:25.10 linux-raspi
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Ubuntu:25.10 linux-realtime
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Ubuntu:25.10 linux-riscv
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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
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Ubuntu:26.04:LTS linux-azure-fde
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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
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Ubuntu:26.04:LTS linux-nvidia-bos
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Ubuntu:26.04:LTS linux-oem-7.0
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Ubuntu:26.04:LTS linux-oracle
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Ubuntu:26.04:LTS linux-raspi
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Ubuntu:26.04:LTS linux-realtime
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Ubuntu:26.04:LTS linux-riscv
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