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Review reviewHigh

CVE-2026-53242

Linux Linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: ALSA: PCM: Fix wait queue list corruption in snd_pcm_drain() on linked streams snd_pcm_drain() uses init_waitqueue_entry which does not clear entry.prev/next, and add_wait_queue with a conditional remove_wait_queue that is skipped when to_check is no longer in the group after concurrent UNLINK. The orphaned wait entry remains on the unlinked substream sleep queue. On the next drain iteration, add_wait_queue adds the entry to a new queue while still linked on the old one, corrupting both lists. A subsequent wake_up dereferen...

CVSS
7.8
EPSS
0.13%
2.96% percentile
CISA KEV
Not listed
Published
2026.06.25
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.13%
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: ALSA: PCM: Fix wait queue list corruption in snd_pcm_drain() on linked streams snd_pcm_drain() uses init_waitqueue_entry which does not clear entry.prev/next, and add_wait_queue with a conditional remove_wait_queue that is skipped when to_check is no longer in the group after concurrent UNLINK. The orphaned wait entry remains on the unlinked substream sleep queue. On the next drain iteration, add_wait_queue adds the entry to a new queue while still linked on the old one, corrupting both lists. A subsequent wake_up dereferen...

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
9baee36e8c5443411c4629afabafaff8a46a23fd, fc71f888994569f87d5bee20b1ac6c9c1e3a7a79, 629cf09464cf98670996ea5c191dc9743e6f3f00, ae8f8d30d334bad5b1b3cdb1eb8a0b771f55e432, 4a758e9a1f5ed722f83c4dd35f867fe811553bcb, 9b1dbd69ba6f8f8c69bc7b77c2ce3b9c6ed05ba6, c2f64e05a0587a83ec42dbd6b7a7ded79b2ff694, 5.10.253, 6.1.167, 6.6.130, 6.12.78, 6.18.19, 6.19.9, 7.0, >= 5.10.253 < 5.10.259, >= 6.1.167 < 6.1.176, >= 6.6.130 < 6.6.143, >= 6.12.78 < 6.12.94, >= 6.18.19 < 6.18.36, >= 6.19.9 < 7.0
Fixed versions
5.10.259, 6.1.176, 6.6.143, 6.12.94, 6.18.36, 7.0, 7.0.13

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-476
CVE-2026-53242 — Linux Linux, linux kernel | SECUFOCUS NOW