CVE-2026-98314

Kernel crash via prematurely published PCM timer

Published Oct 6, 2026 · Updated Oct 6, 2026

A race in ALSA PCM timers in Linux allows attackers to crash the kernel by accessing a newly registered timer through local interfaces. snd_pcm_timer_init registers a timer before setting its private_data pointer, so a concurrent resolution, start, or stop callback dereferences a null pointer. Triggering the fault requires timer registration to overlap a local timer read or start; the published paths do not expose a network trigger.

CVSS severityUnavailable
Unscored
EPSS probability0.18%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A race in ALSA PCM timers in Linux allows attackers to crash the kernel by accessing a newly registered timer through local interfaces. snd_pcm_timer_init registers a timer before setting its private_data pointer, so a concurrent resolution, start, or stop callback dereferences a null pointer. Triggering the fault requires timer registration to overlap a local timer read or start; the published paths do not expose a network trigger.

The record

CVE
CVE-2026-98314
Published
Oct 6, 2026
Updated
Oct 6, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Oct 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 6, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0b349249d572633d7c8cdeb917623d1676a2b7c3
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1e713f9bb2ac583521f06b0eb4e22440b1e3d078
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <27f167e117eca310661fbcbacb352ea08face067
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <555d168bd98daa46daccc68c908201388c834293
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <686c7a6af1eea8d2a919303e4c6bbec3de79dbdc
  6. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <8c869d5cf5affb20994bdbb60e7d46d65c91b55f
  7. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d63f5a9f8121fb43c798056d7dd34c58f47185d7
  8. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e1eee8f16628f8b6bcae0a366fd6a2dd65e71edd
  9. Affected versionversion=2.6.12

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0b349249d572633d7c8cdeb917623d1676a2b7c3; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1e713f9bb2ac583521f06b0eb4e22440b1e3d078; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <27f167e117eca310661fbcbacb352ea08face067; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <555d168bd98daa46daccc68c908201388c834293; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <686c7a6af1eea8d2a919303e4c6bbec3de79dbdc; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <8c869d5cf5affb20994bdbb60e7d46d65c91b55f; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d63f5a9f8121fb43c798056d7dd34c58f47185d7; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e1eee8f16628f8b6bcae0a366fd6a2dd65e71edd; version=2.6.12

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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