SECUFOCUSNOW
Home›CVE index›CVE-2023-54306
Review reviewHigh

CVE-2023-54306

Linux

In the Linux kernel, the following vulnerability has been resolved: net: tls: avoid hanging tasks on the tx_lock syzbot sent a hung task report and Eric explains that adversarial receiver may keep RWIN at 0 for a long time, so we are not guaranteed to make forward progress. Thread which took tx_lock and went to sleep may not release tx_lock for hours. Use interruptible sleep where possible and reschedule the work if it can't take the lock. Testing: existing selftest passes

CVSS
7.5
EPSS
0.52%
41.3% percentile
CISA KEV
Not listed
Published
2025.12.30
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.52%
Technical severityCVSS 7.5

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: net: tls: avoid hanging tasks on the tx_lock syzbot sent a hung task report and Eric explains that adversarial receiver may keep RWIN at 0 for a long time, so we are not guaranteed to make forward progress. Thread which took tx_lock and went to sleep may not release tx_lock for hours. Use interruptible sleep where possible and reschedule the work if it can't take the lock. Testing: existing selftest passes

Affected product and versions

Product
Linux
Affected versions
>= 79ffe6087e9145d2377385cac48d0d6a6b4225a5 < bde541a57b4204d0a800afbbd3d1c06c9cdb133f, >= 79ffe6087e9145d2377385cac48d0d6a6b4225a5 < 7123a4337bf73132bbfb5437e4dc83ba864a9a1e, >= 79ffe6087e9145d2377385cac48d0d6a6b4225a5 < be5d5d0637fd88c18ee76024bdb22649a1de00d6, >= 79ffe6087e9145d2377385cac48d0d6a6b4225a5 < 1f800f6aae57d2d8f63d32fff383017cbc11cf65, >= 79ffe6087e9145d2377385cac48d0d6a6b4225a5 < ccf1ccdc5926907befbe880b562b2a4b5f44c087, >= 79ffe6087e9145d2377385cac48d0d6a6b4225a5 < f3221361dc85d4de22586ce8441ec2c67b454f5d, >= c8d6817345f4ba228d07380e571676405e112872, >= 5.3.11 < 5.4, >= 5.4
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux 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:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
Not available
CVE-2023-54306 — Linux | SECUFOCUS NOW