Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
Linux Linux — tls: fix handling of zero-length records on the rx_list
AV AC PR UI S C I A CVSS EPSS %ile KEV
L L L N U H N H 7.1 .0050 41.1 —
AFFECTED
Product Versions Fixed
Linux 84c61fe1a75b4255df1e1e7c054c9e6d048da417 – —
Linux 6.0 – 6.1.149
TIMELINE
Apr 16 Reserved by Linux
Sep 5 Published (CNA: Linux)
Jul 30 RESCORED — CVE-2025-39682 (Linux). CVSS 9.8 → 7.1 (NVD).
Description
In the Linux kernel, the following vulnerability has been resolved:
tls: fix handling of zero-length records on the rx_list
Each recvmsg() call must process either
- only contiguous DATA records (any number of them)
- one non-DATA record
If the next record has different type than what has already been
processed we break out of the main processing loop. If the record
has already been decrypted (which may be the case for TLS 1.3 where
we don't know type until decryption) we queue the pending record
to the rx_list. Next recvmsg() will pick it up from there.
Queuing the skb to rx_list after zero-copy decrypt is not possible,
since in that case we decrypted directly to the user space buffer,
and we don't have an skb to queue (darg.skb points to the ciphertext
skb for access to metadata like length).
Only data records are allowed zero-copy, and we break the processing
loop after each non-data record. So we should never zero-copy and
then find out that the record type has changed. The corner case
we missed is when the initial record comes from rx_list, and it's
zero length.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
| April 16, 2025 | Reserved | Reserved by Linux |
| September 5, 2025 | Published | Published (CNA: Linux) |
| July 30, 2026 | RESCORED | RESCORED — CVE-2025-39682 (Linux). CVSS 9.8 → 7.1 (NVD). |
Affected
Affected products and packages — 2 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
| Linux | Linux | — | 84c61fe1a75b4255df1e1e7c054c9e6d048da417 | — |
| Linux | Linux | — | 6.0 | 6.1.149 |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2025-39682 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.