ALSA: ctxfi: Add fallback to default RSR for S/PDIF
Summary
| CVE | CVE-2026-46049 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-05-27 14:17:24 UTC |
| Updated | 2026-06-01 17:17:21 UTC |
| 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. |
Risk And Classification
EPSS: 0.000320000 probability, percentile 0.097350000 (date 2026-06-04)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected 8cc72361481f00253f1e468ade5795427386d593 d0b53842211f73a10ea174100a213f7fa14b9f33 git | Not specified |
| CNA | Linux | Linux | affected 8cc72361481f00253f1e468ade5795427386d593 615b7a5e5d8be68d52f262579906f7e015ba4606 git | Not specified |
| CNA | Linux | Linux | affected 8cc72361481f00253f1e468ade5795427386d593 dfc00979ff00d9dfdfa1df32144a272ee2728102 git | Not specified |
| CNA | Linux | Linux | affected 8cc72361481f00253f1e468ade5795427386d593 25ded535ee261161bcf19dafd525c542e606559d git | Not specified |
| CNA | Linux | Linux | affected 8cc72361481f00253f1e468ade5795427386d593 30f9494c6f2b53a78822cfb653ffbb1d092d44c8 git | Not specified |
| CNA | Linux | Linux | affected 8cc72361481f00253f1e468ade5795427386d593 09496158f6ebba8830593f8972035c02f97124c1 git | Not specified |
| CNA | Linux | Linux | affected 8cc72361481f00253f1e468ade5795427386d593 95b1ee8442cabbde83b2848e7c6100df90f3a00d git | Not specified |
| CNA | Linux | Linux | affected 8cc72361481f00253f1e468ade5795427386d593 7d61662197ecdc458e33e475b6ada7f6da61d364 git | Not specified |
| CNA | Linux | Linux | affected 2.6.31 | Not specified |
| CNA | Linux | Linux | unaffected 2.6.31 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.10.258 5.10.* semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.209 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.175 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.140 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.86 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.27 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.0.4 7.0.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1-rc1 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/30f9494c6f2b53a78822cfb653ffbb1d092d44c8 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/7d61662197ecdc458e33e475b6ada7f6da61d364 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/09496158f6ebba8830593f8972035c02f97124c1 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/615b7a5e5d8be68d52f262579906f7e015ba4606 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/d0b53842211f73a10ea174100a213f7fa14b9f33 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/dfc00979ff00d9dfdfa1df32144a272ee2728102 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/95b1ee8442cabbde83b2848e7c6100df90f3a00d | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/25ded535ee261161bcf19dafd525c542e606559d | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.