CVE-2026-46049
published 2026-05-27CVE-2026-46049: 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()…
medium5.5
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.
Affected
10 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| linux | linux | — | — |
| linux | linux | >= 8cc72361481f00253f1e468ade5795427386d593 < d0b53842211f73a10ea174100a213f7fa14b9f33 | d0b53842211f73a10ea174100a213f7fa14b9f33 |
| linux | linux | >= 8cc72361481f00253f1e468ade5795427386d593 < 615b7a5e5d8be68d52f262579906f7e015ba4606 | 615b7a5e5d8be68d52f262579906f7e015ba4606 |
| linux | linux | >= 8cc72361481f00253f1e468ade5795427386d593 < dfc00979ff00d9dfdfa1df32144a272ee2728102 | dfc00979ff00d9dfdfa1df32144a272ee2728102 |
| linux | linux | >= 8cc72361481f00253f1e468ade5795427386d593 < 25ded535ee261161bcf19dafd525c542e606559d | 25ded535ee261161bcf19dafd525c542e606559d |
| linux | linux | >= 8cc72361481f00253f1e468ade5795427386d593 < 30f9494c6f2b53a78822cfb653ffbb1d092d44c8 | 30f9494c6f2b53a78822cfb653ffbb1d092d44c8 |
| linux | linux | >= 8cc72361481f00253f1e468ade5795427386d593 < 09496158f6ebba8830593f8972035c02f97124c1 | 09496158f6ebba8830593f8972035c02f97124c1 |
| linux | linux | >= 8cc72361481f00253f1e468ade5795427386d593 < 95b1ee8442cabbde83b2848e7c6100df90f3a00d | 95b1ee8442cabbde83b2848e7c6100df90f3a00d |
| linux | linux | >= 8cc72361481f00253f1e468ade5795427386d593 < 7d61662197ecdc458e33e475b6ada7f6da61d364 | 7d61662197ecdc458e33e475b6ada7f6da61d364 |
| linux | linux_kernel | — | — |