CVE-2026-46049
What it is
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.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of service disruption.
- Exploit odds
- 0.1% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.1% in the next 30 days (EPSS).
- Severity: 5.5 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.1% · EPSS, next 30 days
- Record status
- Analyzed
Affected
- Linux Kernel < 5.10.258
- Linux Kernel < 5.15.209
- Linux Kernel < 6.1.175
- Linux Kernel < 6.6.140
- Linux Kernel < 6.12.86
- Linux Kernel < 6.18.27
- Linux Kernel < 7.0.4
Attack profile CVSS 3.1 · 5.5
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2026-46049.md and follow it. Check whether this project is affected by CVE-2026-46049. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://git.kernel.org/stable/c/09496158f6ebba8830593f8972035c02f97124c1
- https://git.kernel.org/stable/c/25ded535ee261161bcf19dafd525c542e606559d
- https://git.kernel.org/stable/c/30f9494c6f2b53a78822cfb653ffbb1d092d44c8
- https://git.kernel.org/stable/c/615b7a5e5d8be68d52f262579906f7e015ba4606
- https://git.kernel.org/stable/c/7d61662197ecdc458e33e475b6ada7f6da61d364
- https://git.kernel.org/stable/c/95b1ee8442cabbde83b2848e7c6100df90f3a00d
- https://git.kernel.org/stable/c/d0b53842211f73a10ea174100a213f7fa14b9f33
- https://git.kernel.org/stable/c/dfc00979ff00d9dfdfa1df32144a272ee2728102
References
- https://git.kernel.org/stable/c/09496158f6ebba8830593f8972035c02f97124c1
- https://git.kernel.org/stable/c/25ded535ee261161bcf19dafd525c542e606559d
- https://git.kernel.org/stable/c/30f9494c6f2b53a78822cfb653ffbb1d092d44c8
- https://git.kernel.org/stable/c/615b7a5e5d8be68d52f262579906f7e015ba4606
- https://git.kernel.org/stable/c/7d61662197ecdc458e33e475b6ada7f6da61d364
- https://git.kernel.org/stable/c/95b1ee8442cabbde83b2848e7c6100df90f3a00d
- https://git.kernel.org/stable/c/d0b53842211f73a10ea174100a213f7fa14b9f33
- https://git.kernel.org/stable/c/dfc00979ff00d9dfdfa1df32144a272ee2728102