HighFix available
net: tls: avoid hanging tasks on the tx_lock
Type: advisorySources: OSV
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
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.173, 5.15.100, 5.4.235, 6.1.18, 6.2.5
- CVEs
- CVE-2023-54306
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 01:50 UTC · Revision 1
Source evidence
net: tls: avoid hanging tasks on the tx_lock
core-osv · Original sourcePublished 30 Dec 2025, 12:23 UTC
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
osv:CVE-2023-54306
Kernel
Fixed versions: 5.4.235, 5.10.173, 5.15.100, 6.1.18, 6.2.5
Complete source record
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"title": "net: tls: avoid hanging tasks on the tx_lock",
"summary": "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",
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"modified": "2026-10-28T02:30:25.474464403Z",
"provider": "osv",
"references": [
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"https://nvd.nist.gov/vuln/detail/CVE-2023-54306",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
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"provider_metadata": {
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"evidence": "/id"
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"security_relevant": true,
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"source_id": "core-osv",
"document_id": 491729,
"published_at": "2025-12-30T12:23:39.833+00:00"
}