CVE-2026-90220

A flaw was found in the ALSA Advanced Linux Sound Architecture sequencer component of the Linux kernel. An unprivileged local attacker can exploit this vulnerability by sending a specially crafted variable-length event to a non-existent port and then reading the bounced error event. This can lead...

kernel: ALSA: seq: Serialize UMP output teardown with event_input

A flaw was found in the Advanced Linux Sound Architecture ALSA sequencer component of the Linux kernel. This vulnerability, a use-after-free, occurs because of improper synchronization when handling Universal MIDI Packet UMP output. A local attacker could exploit this by creating a specific timin...

kernel: ALSA: seq: Serialize UMP output teardown with event_input

A flaw was found in the Advanced Linux Sound Architecture ALSA sequencer component of the Linux kernel. This vulnerability, a use-after-free, occurs because of improper synchronization when handling Universal MIDI Packet UMP output. A local attacker could exploit this by creating a specific timin...

PT-2026-94568

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the ALSA sequencer where the bounce error event function leaks a kernel memory address to userspace. When a queued variable-length event fails, the data.ext.ptr variab...

PT-2026-94555

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the ALSA sequencer MIDI component where the snd midi input event function can run while a rawmidi substream is closing. This creates a race condition in snd rawmidi...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-053354)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-053354 advisory. In the Linux kernel, the following vulnerability has been resolved: ALSA: seq: oss: Fix races at processing SysEx messages OSS sequencer handles the SysEx messages...

CVE-2026-80628

A flaw was found in the Linux kernel's ALSA Advanced Linux Sound Architecture sequencer OSS Open Sound System emulation. A local user could exploit a data race condition when the sndseqossreadqclear function resets the read queue state without proper locking. This can lead to stale records, dropp...

SUSE CVE-2026-74504

In the Linux kernel, the following vulnerability has been resolved: ALSA: seq: Fix division by zero in initializetimer A userspace-driven ALSA timer SNDUTIMER lets an unprivileged user set the backing sndtimer's hardware resolution to an arbitrary 64-bit value via SNDRVTIMERIOCTLCREATE...

CVE-2026-74504

A flaw was found in the Linux kernel's Advanced Linux Sound Architecture ALSA sequencer component. An unprivileged local user with access to ALSA timer and sequencer devices can trigger a division-by-zero error. This occurs by manipulating the ALSA timer's hardware resolution, leading to an integ...

CVE-2026-74388

A flaw was found in the Linux kernel's Advanced Linux Sound Architecture ALSA Open Sound System OSS sequencer. A local attacker could exploit a Use-After-Free UAF vulnerability by concurrently closing a sequencer port while an event containing System Exclusive SysEx data is pending dispatch. This...

CVE-2026-74339

A flaw was found in the ALSA Advanced Linux Sound Architecture sequencer component of the Linux kernel. A local attacker, by writing a direct variable event to itself, can read back a kernel memory address from the returned event header. This information disclosure could potentially be used to...

CVE-2026-74278

A flaw was found in the Linux kernel's Advanced Linux Sound Architecture ALSA sequencer. A local attacker could exploit a vulnerability in the bounceerrorevent function, which improperly handles bounce error events for user clients. This flaw allows for the disclosure of kernel heap memory...

CVE-2026-74504

In the Linux kernel, the following vulnerability has been resolved: ALSA: seq: Fix division by zero in initializetimer A userspace-driven ALSA timer SNDUTIMER lets an unprivileged user set the backing sndtimer's hardware resolution to an arbitrary 64-bit value via SNDRVTIMERIOCTLCREATE...

CVE-2026-74504

In the Linux kernel, the following vulnerability has been resolved: ALSA: seq: Fix division by zero in initializetimer A userspace-driven ALSA timer SNDUTIMER lets an unprivileged user set the backing sndtimer's hardware resolution to an arbitrary 64-bit value via SNDRVTIMERIOCTLCREATE...

UBUNTU-CVE-2026-74504

In the Linux kernel, the following vulnerability has been resolved: ALSA: seq: Fix division by zero in initializetimer A userspace-driven ALSA timer SNDUTIMER lets an unprivileged user set the backing sndtimer's hardware resolution to an arbitrary 64-bit value via SNDRVTIMERIOCTLCREATE...

CVE-2026-74504

Summary (CVE-2026-74504): The Linux kernel ALSA sequencing timer (SND_UTIMER) can be driven by an unprivileged user to set arbitrary 64‑bit hardware resolution for snd_timer via SNDRV_TIMER_IOCTL_CREATE. When bound to a sequencer queue, initialize_timer() computes tmr->ticks = 1_000_000_000 / ...

CVE-2026-74504 ALSA: seq: Fix division by zero in initialize_timer()

In the Linux kernel, the following vulnerability has been resolved: ALSA: seq: Fix division by zero in initializetimer A userspace-driven ALSA timer SNDUTIMER lets an unprivileged user set the backing sndtimer's hardware resolution to an arbitrary 64-bit value via SNDRVTIMERIOCTLCREATE...

CVE-2026-74339

In the Linux kernel, the following vulnerability has been resolved: ALSA: seq: Clear variable event pointer on read sndseqread copies a queued variable-length event header to userspace before expanding the payload. Queued variable-length events use SNDRVSEQEXTCHAINED internally, and data.ext.ptr...

UBUNTU-CVE-2026-74339

In the Linux kernel, the following vulnerability has been resolved: ALSA: seq: Clear variable event pointer on read sndseqread copies a queued variable-length event header to userspace before expanding the payload. Queued variable-length events use SNDRVSEQEXTCHAINED internally, and data.ext.ptr...

CVE-2026-74388

In the Linux kernel, the following vulnerability has been resolved: ALSA: seq: oss: Fix UAF at handling events with embedded SysEx data The OSS sequencer processes the input MIDI bytes into a sequencer event to be dispatched later in sndseqossmidiputc called from sndseqossprocessevent. When it's ...