CVE-2026-43126Patch(linux / linux_kernel)

LOWCVSS 7.8 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

Patch linux linux_kernel systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

In the Linux kernel, the following vulnerability has been resolved: ALSA: mixer: oss: Add card disconnect checkpoints ALSA OSS mixer layer calls the kcontrol ops rather individually, and pending calls might be not always caught at disconnecting the device. For avoiding the potential UAF scenarios, add sanity checks of the card disconnection at each entry point of OSS mixer accesses. The rwsem is taken just before that check, hence the rest context should be covered by that properly.

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0.5/ 10 priority

Sources & remediation

Patch / fix

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

linux_kernel

Threat summary

Patch or workaround signal is available
1 mentions across 1 observed day

What's happening

Patch or workaround mentioned in 1 signal
Technical details provided in 1 signal
1 total mentions across 1 day

Affected systems

Vendors

linux

Products

linux_kernel

Deep dive

Activity timeline1 mentions / 1d

Signal classification1 categories

Patch

1100.0%

Referenced assets1 URL

By indicator

https://windowsforum.com/threads/cve-2026-43126-alsa-oss-linux-kernel-bug-patch-the-disconnect-uaf-risk.416738/?utm_source=x&utm_medium=social&utm_campaign=news_node84

Full discourse1 post

WindowsForum@windowsforum156d
Patch
🪓 Linux kernel CVE-2026-43126 (ALSA OSS) screams “disconnect UAF”: teardown happens, but the mixer still pokes the dead sound card. In WSL/dual-boot land, that’s still your endpoint. #Windows #Security https://windowsforum.com/threads/cve-2026-43126-alsa-oss-linux-kernel-bug-patch-the-disconnect-uaf-risk.416738/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #LinuxKernelSecurity #Cve202643126 #AlsaOssMixer https://t.co/O5K8RCNAJ6
Post summary
The post announces a Linux kernel CVE‑2026‑43126 UAF bug and links to a forum thread that discusses patching the defect.
0000047
1.1K followersView on X

CPE platform detail1 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

1 of 1 entries

Part	Vendor	Product	Version	Target SW	Target HW
OS	linux	linux_kernel	-	-	-

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