CVE-2025-39682— tls: fix handling of zero-length records on the rx_list
Affected Version Matrix 12
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 84c61fe1a75b4255df1e1e7c054c9e6d048da417< 2902c3ebcca52ca845c03182000e8d71d3a5196f | affected |
84c61fe1a75b4255df1e1e7c054c9e6d048da417< c09dd3773b5950e9cfb6c9b9a5f6e36d06c62677 | affected | ||
84c61fe1a75b4255df1e1e7c054c9e6d048da417< 3439c15ae91a517cf3c650ea15a8987699416ad9 | affected | ||
84c61fe1a75b4255df1e1e7c054c9e6d048da417< 29c0ce3c8cdb6dc5d61139c937f34cb888a6f42e | affected | ||
84c61fe1a75b4255df1e1e7c054c9e6d048da417< 62708b9452f8eb77513115b17c4f8d1a22ebf843 | affected | ||
6.0 | affected | ||
< 6.0 | unaffected | ||
6.1.149≤ 6.1.* | unaffected | ||
| … +4 more rows | |||
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I. Basic Information for CVE-2025-39682
Vulnerability Information
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Vulnerability Title
tls: fix handling of zero-length records on the rx_list
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于tls模块处理rx_list上零长度记录时存在问题。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2025-39682
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | A variant of CVE-2024-58239 | https://github.com/khoatran107/cve-2025-39682 | POC Details |
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Same Patch Batch · Linux · 2025-09-05 · 60 CVEs total
| CVE-2025-39707 | drm/amdgpu: check if hubbub is NULL in debugfs/amdgpu_dm_capabilities | |
| CVE-2025-39725 | mm/vmscan: fix hwpoisoned large folio handling in shrink_folio_list | |
| CVE-2025-39722 | crypto: caam - Prevent crash on suspend with iMX8QM / iMX8ULP | |
| CVE-2025-39721 | crypto: qat - flush misc workqueue during device shutdown | |
| CVE-2025-39720 | ksmbd: fix refcount leak causing resource not released | |
| CVE-2025-39723 | netfs: Fix unbuffered write error handling | |
| CVE-2025-39711 | media: ivsc: Fix crash at shutdown due to missing mei_cldev_disable() calls | |
| CVE-2025-39710 | media: venus: Add a check for packet size after reading from shared memory | |
| CVE-2025-39709 | media: venus: protect against spurious interrupts during probe | |
| CVE-2025-39708 | media: iris: Fix NULL pointer dereference | |
| CVE-2025-39712 | media: mt9m114: Fix deadlock in get_frame_interval/set_frame_interval | |
| CVE-2025-39706 | drm/amdkfd: Destroy KFD debugfs after destroy KFD wq | |
| CVE-2025-39705 | drm/amd/display: fix a Null pointer dereference vulnerability | |
| CVE-2025-39704 | LoongArch: KVM: Fix stack protector issue in send_ipi_data() | |
| CVE-2025-39703 | net, hsr: reject HSR frame if skb can't hold tag | |
| CVE-2025-39702 | ipv6: sr: Fix MAC comparison to be constant-time | |
| CVE-2025-39701 | ACPI: pfr_update: Fix the driver update version check | |
| CVE-2025-39700 | mm/damon/ops-common: ignore migration request to invalid nodes | |
| CVE-2025-39699 | iommu/riscv: prevent NULL deref in iova_to_phys | |
| CVE-2025-39698 | io_uring/futex: ensure io_futex_wait() cleans up properly on failure |
Showing top 20 of 60 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-45846
bareudp: fix NULL pointer dereference in bareudp_fill_metada - CVE-2026-45845
net/sched: taprio: fix NULL pointer dereference in class dum - CVE-2026-45844
netfilter: arp_tables: fix IEEE1394 ARP payload parsing - CVE-2026-45843
slip: bound decode() reads against the compressed packet len - CVE-2026-45842
slip: reject VJ receive packets on instances with no rstate
Same vendor: Linux
- CVE-2026-45846
bareudp: fix NULL pointer dereference in bareudp_fill_metada - CVE-2026-45845
net/sched: taprio: fix NULL pointer dereference in class dum - CVE-2026-45844
netfilter: arp_tables: fix IEEE1394 ARP payload parsing - CVE-2026-45843
slip: bound decode() reads against the compressed packet len - CVE-2026-45842
slip: reject VJ receive packets on instances with no rstate
V. Comments for CVE-2025-39682
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