CVE-2026-46049ALSA: ctxfi: Add fallback to default RSR for S/PDIF
- 5.5MediumCVSS base score
- 0.12%Exploitation in 30 daysEPSS · top 98% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
- 14 days later
· 14 days later
Published
- 5 months later
· 5 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.12% · top 98% of all CVEs (15 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 8cc72361481f00253f1e468ade5795427386d593 – < d0b53842211f73a10ea174100a213f7fa14b9f33
- affected 8cc72361481f00253f1e468ade5795427386d593 – < 615b7a5e5d8be68d52f262579906f7e015ba4606
- affected 8cc72361481f00253f1e468ade5795427386d593 – < dfc00979ff00d9dfdfa1df32144a272ee2728102
- affected 8cc72361481f00253f1e468ade5795427386d593 – < 25ded535ee261161bcf19dafd525c542e606559d
- affected 8cc72361481f00253f1e468ade5795427386d593 – < 30f9494c6f2b53a78822cfb653ffbb1d092d44c8
- affected 8cc72361481f00253f1e468ade5795427386d593 – < 09496158f6ebba8830593f8972035c02f97124c1
- affected 8cc72361481f00253f1e468ade5795427386d593 – < 95b1ee8442cabbde83b2848e7c6100df90f3a00d
- affected 8cc72361481f00253f1e468ade5795427386d593 – < 7d61662197ecdc458e33e475b6ada7f6da61d364
- affected 2.6.31
- unaffected < 2.6.31
- unaffected 5.10.258 – ≤ 5.10.*
- unaffected 5.15.209 – ≤ 5.15.*
- unaffected 6.1.175 – ≤ 6.1.*
- unaffected 6.6.140 – ≤ 6.6.*
- unaffected 6.12.86 – ≤ 6.12.*
- unaffected 6.18.27 – ≤ 6.18.*
- unaffected 7.0.4 – ≤ 7.0.*
- unaffected 7.1 – ≤ *
References
References8
- https://git.kernel.org/stable/c/d0b53842211f73a10ea174100a213f7fa14b9f33 (opens in a new tab)
- https://git.kernel.org/stable/c/615b7a5e5d8be68d52f262579906f7e015ba4606 (opens in a new tab)
- https://git.kernel.org/stable/c/dfc00979ff00d9dfdfa1df32144a272ee2728102 (opens in a new tab)
- https://git.kernel.org/stable/c/25ded535ee261161bcf19dafd525c542e606559d (opens in a new tab)
- https://git.kernel.org/stable/c/30f9494c6f2b53a78822cfb653ffbb1d092d44c8 (opens in a new tab)
- https://git.kernel.org/stable/c/09496158f6ebba8830593f8972035c02f97124c1 (opens in a new tab)
- https://git.kernel.org/stable/c/95b1ee8442cabbde83b2848e7c6100df90f3a00d (opens in a new tab)
- https://git.kernel.org/stable/c/7d61662197ecdc458e33e475b6ada7f6da61d364 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-32431 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-46049)Record last updated .