Medium 5.5Published May 27, 2026

CVE-2026-46049ALSA: ctxfi: Add fallback to default RSR for S/PDIF

Updated under an hour ago (Oct 26, 2026, 2:00 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: Jun 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 8cc72361481f00253f1e468ade5795427386d593 before d0b53842211f73a10ea174100a213f7fa14b9f33; from 8cc72361481f00253f1e468ade5795427386d593 before 615b7a5e5d8be68d52f262579906f7e015ba4606; from 8cc72361481f00253f1e468ade5795427386d593 before dfc00979ff00d9dfdfa1df32144a272ee2728102; from 8cc72361481f00253f1e468ade5795427386d593 before 25ded535ee261161bcf19dafd525c542e606559d; from 8cc72361481f00253f1e468ade5795427386d593 before 30f9494c6f2b53a78822cfb653ffbb1d092d44c8; from 8cc72361481f00253f1e468ade5795427386d593 before 09496158f6ebba8830593f8972035c02f97124c1; from 8cc72361481f00253f1e468ade5795427386d593 before 95b1ee8442cabbde83b2848e7c6100df90f3a00d; 8cc72361481f00253f1e468ade5795427386d593 builds before 7d61662197ecdc458e33e475b6ada7f6da61d364	CNA record
linux linux_kernel linux:linux_kernel	from 2.6.31 before 5.10.258; from 5.11 before 5.15.209; from 5.16 before 6.1.175; from 6.2 before 6.6.140; from 6.7 before 6.12.86; from 6.13 before 6.18.27; from 6.19 before 7.0.4	NVD

References

References

https://git.kernel.org/stable/c/d0b53842211f73a10ea174100a213f7fa14b9f33	patch
https://git.kernel.org/stable/c/615b7a5e5d8be68d52f262579906f7e015ba4606	patch
https://git.kernel.org/stable/c/dfc00979ff00d9dfdfa1df32144a272ee2728102	patch
https://git.kernel.org/stable/c/25ded535ee261161bcf19dafd525c542e606559d	patch
https://git.kernel.org/stable/c/30f9494c6f2b53a78822cfb653ffbb1d092d44c8	patch
https://git.kernel.org/stable/c/09496158f6ebba8830593f8972035c02f97124c1	patch
https://git.kernel.org/stable/c/95b1ee8442cabbde83b2848e7c6100df90f3a00d	patch
https://git.kernel.org/stable/c/7d61662197ecdc458e33e475b6ada7f6da61d364	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.