CVE-2026-46049
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.
How to fix
- linux linux_kernel5.10.258, 5.15.209, 6.1.175, 6.6.140, 6.12.86, 6.18.27, 7.0.4 or later
- git.kernel.org/stable/c/09496158f6ebba8830593f8972035c02f97124c1
- git.kernel.org/stable/c/25ded535ee261161bcf19dafd525c542e606559d
- git.kernel.org/stable/c/30f9494c6f2b53a78822cfb653ffbb1d092d44c8
- git.kernel.org/stable/c/615b7a5e5d8be68d52f262579906f7e015ba4606
- git.kernel.org/stable/c/7d61662197ecdc458e33e475b6ada7f6da61d364
- git.kernel.org/stable/c/95b1ee8442cabbde83b2848e7c6100df90f3a00d
- git.kernel.org/stable/c/d0b53842211f73a10ea174100a213f7fa14b9f33
- git.kernel.org/stable/c/dfc00979ff00d9dfdfa1df32144a272ee2728102
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 2.6.31 ≤ v < 5.10.258, 5.11 ≤ v < 5.15.209, 5.16 ≤ v < 6.1.175, 6.2 ≤ v < 6.6.140, 6.7 ≤ v < 6.12.86, 6.13 ≤ v < 6.18.27, 6.19 ≤ v < 7.0.4 | 5.10.258, 5.15.209, 6.1.175, 6.6.140, 6.12.86, 6.18.27, 7.0.4 |
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