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CVE-2026-46049 (GCVE-0-2026-46049)

Vulnerability from cvelistv5 – Published: 2026-05-27 12:57 – Updated: 2026-06-14 17:50
VLAI
Title
ALSA: ctxfi: Add fallback to default RSR for S/PDIF
Summary
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.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 8cc72361481f00253f1e468ade5795427386d593 , < d0b53842211f73a10ea174100a213f7fa14b9f33 (git)
Affected: 8cc72361481f00253f1e468ade5795427386d593 , < 615b7a5e5d8be68d52f262579906f7e015ba4606 (git)
Affected: 8cc72361481f00253f1e468ade5795427386d593 , < dfc00979ff00d9dfdfa1df32144a272ee2728102 (git)
Affected: 8cc72361481f00253f1e468ade5795427386d593 , < 25ded535ee261161bcf19dafd525c542e606559d (git)
Affected: 8cc72361481f00253f1e468ade5795427386d593 , < 30f9494c6f2b53a78822cfb653ffbb1d092d44c8 (git)
Affected: 8cc72361481f00253f1e468ade5795427386d593 , < 09496158f6ebba8830593f8972035c02f97124c1 (git)
Affected: 8cc72361481f00253f1e468ade5795427386d593 , < 95b1ee8442cabbde83b2848e7c6100df90f3a00d (git)
Affected: 8cc72361481f00253f1e468ade5795427386d593 , < 7d61662197ecdc458e33e475b6ada7f6da61d364 (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.31
Unaffected: 0 , < 2.6.31 (semver)
Unaffected: 5.10.258 , ≤ 5.10.* (semver)
Unaffected: 5.15.209 , ≤ 5.15.* (semver)
Unaffected: 6.1.175 , ≤ 6.1.* (semver)
Unaffected: 6.6.140 , ≤ 6.6.* (semver)
Unaffected: 6.12.86 , ≤ 6.12.* (semver)
Unaffected: 6.18.27 , ≤ 6.18.* (semver)
Unaffected: 7.0.4 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-07-02T21:32:10+00:00",
      "cve": "CVE-2026-46049",
      "id": "CVE-2026-46049",
      "initial_release_date": "2026-05-27T00:00:00+00:00",
      "product_status:known_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ALSA: ctxfi: Add fallback to default RSR for S/PDIF",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46049.json",
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    "suse_vex": {
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      "cve": "CVE-2026-46049",
      "id": "CVE-2026-46049",
      "initial_release_date": "2026-05-28T03:53:41Z",
      "product_status:first_fixed": "2",
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      "product_status:known_not_affected": "17",
      "product_status:recommended": "291",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-46049",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-46049.json",
      "version": "14"
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}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.