In the Linux kernel, the following vulnerability has been resolved:

ALSA: ctxfi: Add fallback to default RSR for S/PDIF

spdif_passthru_playback_get_resources() uses atc->pll_rate as the RSR
for the MSR calculation loop. However, pll_rate is only updated in
atc_pll_init() and not in hw_pll_init(), so it remains 0 after the
card init.

When spdif_passthru_playback_setup() skips atc_pll_init() for
32000 Hz, (rsr * desc.msr) always becomes 0, causing the loop to spin
indefinitely.

Add fallback to use atc->rsr when atc->pll_rate is 0. This reflects
the hardware state, since hw_card_init() already configures the PLL
to the default RSR.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
8cc72361481f00253f1e468ade5795427386d593 affected < 25ded535ee261161bcf19dafd525c542e606559d
8cc72361481f00253f1e468ade5795427386d593 affected < 30f9494c6f2b53a78822cfb653ffbb1d092d44c8
8cc72361481f00253f1e468ade5795427386d593 affected < 09496158f6ebba8830593f8972035c02f97124c1
8cc72361481f00253f1e468ade5795427386d593 affected < 95b1ee8442cabbde83b2848e7c6100df90f3a00d
8cc72361481f00253f1e468ade5795427386d593 affected < 7d61662197ecdc458e33e475b6ada7f6da61d364
Linux Linux affected
Version Status Constraints
2.6.31 affected —
0 unaffected < 2.6.31
6.6.140 unaffected ≤ 6.6.*
6.12.86 unaffected ≤ 6.12.*
6.18.27 unaffected ≤ 6.18.*
7.0.4 unaffected ≤ 7.0.*
7.1-rc1 unaffected ≤ *

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References
Link Providers
https://git.kernel.org/stable/c/09496158f6ebba8830593f8972035c02f97124c1 cve-icon cve-icon
https://git.kernel.org/stable/c/25ded535ee261161bcf19dafd525c542e606559d cve-icon cve-icon
https://git.kernel.org/stable/c/30f9494c6f2b53a78822cfb653ffbb1d092d44c8 cve-icon cve-icon
https://git.kernel.org/stable/c/7d61662197ecdc458e33e475b6ada7f6da61d364 cve-icon cve-icon
https://git.kernel.org/stable/c/95b1ee8442cabbde83b2848e7c6100df90f3a00d cve-icon cve-icon
History

Wed, 27 May 2026 20:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-367
CWE-718

Wed, 27 May 2026 14:15:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: ALSA: ctxfi: Add fallback to default RSR for S/PDIF spdif_passthru_playback_get_resources() uses atc->pll_rate as the RSR for the MSR calculation loop. However, pll_rate is only updated in atc_pll_init() and not in hw_pll_init(), so it remains 0 after the card init. When spdif_passthru_playback_setup() skips atc_pll_init() for 32000 Hz, (rsr * desc.msr) always becomes 0, causing the loop to spin indefinitely. Add fallback to use atc->rsr when atc->pll_rate is 0. This reflects the hardware state, since hw_card_init() already configures the PLL to the default RSR.
Title ALSA: ctxfi: Add fallback to default RSR for S/PDIF
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-05-27T12:57:05.761Z

Reserved: 2026-05-13T15:03:33.094Z

Link: CVE-2026-46049

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-05-27T14:17:24.433

Modified: 2026-05-27T14:48:03.013

Link: CVE-2026-46049

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-27T20:30:40Z

Weaknesses