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    <title>Most recent entries from all</title>
    <link>https://vulnerability.circl.lu</link>
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    <lastBuildDate>Tue, 29 Sep 2026 22:11:42 +0000</lastBuildDate>
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      <title>CVE-2026-80828 — ALSA: usb-audio: Complete cleanup after system-resume errors</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-80828</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Linux&lt;/p&gt;
&lt;p&gt;In the Linux kernel, the following vulnerability has been resolved:&lt;/p&gt;
&lt;p&gt;ALSA: usb-audio: Complete cleanup after system-resume errors&lt;/p&gt;
&lt;p&gt;A failed system resume can leave the card unusable until reboot.
usb_audio_resume() jumps to err_out when snd_usb_pcm_resume() or
snd_usb_mixer_resume() fails. The error path skips the out: block, which
restores D0 and decrements chip-&amp;gt;num_suspended_intf.&lt;/p&gt;
&lt;p&gt;The card stays in SNDRV_CTL_POWER_D3hot, so later control access blocks in
snd_power_ref_and_wait(). USB core logs an interface resume callback error.
It does not retry that callback, so a later callback cannot complete the
skipped cleanup.&lt;/p&gt;
&lt;p&gt;usb_audio_suspend() increments num_suspended_intf before returning success.
A system-resume callback must consume the system-suspend count even if a
component resume fails. Otherwise, the stranded count skews later suspend
and resume cycles.&lt;/p&gt;
&lt;p&gt;Do not apply this cleanup to runtime-resume errors. Runtime PM can retry
-EAGAIN or -EBUSY without another suspend callback. The count must continue
to describe that suspended interface. Other runtime-resume errors latch
runtime_error in the PM core and do not cause an immediate callback retry.&lt;/p&gt;
&lt;p&gt;Both parts of the system-resume error path are longstanding. Commit
88a8516a2128a (&amp;#34;ALSA: usbaudio: implement USB autosuspend&amp;#34;) introduced
err_out past the D0 restore. Commit 862b2509d157c (&amp;#34;ALSA: usb-audio: Fix
inconsistent card PM state after resume&amp;#34;) later moved
num_suspended_intf-- into the out: block. The error path now sk…&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Linux&lt;/p&gt;
&lt;p&gt;In the Linux kernel, the following vulnerability has been resolved:&lt;/p&gt;
&lt;p&gt;ALSA: usb-audio: Complete cleanup after system-resume errors&lt;/p&gt;
&lt;p&gt;A failed system resume can leave the card unusable until reboot.
usb_audio_resume() jumps to err_out when snd_usb_pcm_resume() or
snd_usb_mixer_resume() fails. The error path skips the out: block, which
restores D0 and decrements chip-&amp;gt;num_suspended_intf.&lt;/p&gt;
&lt;p&gt;The card stays in SNDRV_CTL_POWER_D3hot, so later control access blocks in
snd_power_ref_and_wait(). USB core logs an interface resume callback error.
It does not retry that callback, so a later callback cannot complete the
skipped cleanup.&lt;/p&gt;
&lt;p&gt;usb_audio_suspend() increments num_suspended_intf before returning success.
A system-resume callback must consume the system-suspend count even if a
component resume fails. Otherwise, the stranded count skews later suspend
and resume cycles.&lt;/p&gt;
&lt;p&gt;Do not apply this cleanup to runtime-resume errors. Runtime PM can retry
-EAGAIN or -EBUSY without another suspend callback. The count must continue
to describe that suspended interface. Other runtime-resume errors latch
runtime_error in the PM core and do not cause an immediate callback retry.&lt;/p&gt;
&lt;p&gt;Both parts of the system-resume error path are longstanding. Commit
88a8516a2128a (&amp;#34;ALSA: usbaudio: implement USB autosuspend&amp;#34;) introduced
err_out past the D0 restore. Commit 862b2509d157c (&amp;#34;ALSA: usb-audio: Fix
inconsistent card PM state after resume&amp;#34;) later moved
num_suspended_intf-- into the out: block. The error path now sk…&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://vulnerability.circl.lu/vuln/cve-2026-80828</guid>
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