01 Record
CVE-2025-39682
tls: fix handling of zero-length records on the rx_list
CriticalKEVPUBLISHEDCNA: Linux
CNA base score9.8 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
02 Description
tls: fix handling of zero-length records on the rx_list
03 Exploitation and scoring
- Exploitation
- Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2026-09-18. Federal remediation due 2026-09-21.
- SSVC decision
- ExploitationactiveCISA reports credible evidence of active exploitation.
- AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
- Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
- EPSS probability
- 3.25% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 88.2% of scored records. A rank, not a probability.
- NVD base score
- 9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Analyzed. NVD last modified this record on 2026-10-19.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2025-09-05 17:20Z1 YR AGO
- Last updated
- 2026-10-07 17:56Z22 DAYS AGO
- Reserved
- 2025-04-16
- Assigning CNA
- Linux
- Record state
- PUBLISHED
- Severity
- Critical (CVSS 9.8)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-754Improper Check for Unusual or Exceptional ConditionsClass
- Data version
- 5.2
- Document digest
- ea165a6a6e5b88e5291bdbd99a4c942a45dd33e404e3b7a90011ee18ee61834c
05 Affected products
VendorProductVersionsPlatforms
LinuxLinux84c61fe1a75b4255df1e1e7c054c9e6d048da417 to < 2902c3ebcca52ca845c03182000e8d71d3a5196f, 84c61fe1a75b4255df1e1e7c054c9e6d048da417 to < c09dd3773b5950e9cfb6c9b9a5f6e36d06c62677, 84c61fe1a75b4255df1e1e7c054c9e6d048da417 to < 3439c15ae91a517cf3c650ea15a8987699416ad9, 84c61fe1a75b4255df1e1e7c054c9e6d048da417 to < 29c0ce3c8cdb6dc5d61139c937f34cb888a6f42e, 84c61fe1a75b4255df1e1e7c054c9e6d048da417 to < 62708b9452f8eb77513115b17c4f8d1a22ebf843, 6.0—
06 References
- git.kernel.orghttps://git.kernel.org/stable/c/2902c3ebcca52ca845c03182000e8d71d3a5196f
- git.kernel.orghttps://git.kernel.org/stable/c/c09dd3773b5950e9cfb6c9b9a5f6e36d06c62677
- git.kernel.orghttps://git.kernel.org/stable/c/3439c15ae91a517cf3c650ea15a8987699416ad9
- git.kernel.orghttps://git.kernel.org/stable/c/29c0ce3c8cdb6dc5d61139c937f34cb888a6f42e
- git.kernel.orghttps://git.kernel.org/stable/c/62708b9452f8eb77513115b17c4f8d1a22ebf843
- lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-032379.html
- www.cisa.govhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-39682
07 Fixed in
AlmaLinux 9
- kernel Fixed in 5.14.0-570.49.1.el9_6
- kernel-64k Fixed in 5.14.0-570.49.1.el9_6
- kernel-64k-core Fixed in 5.14.0-570.49.1.el9_6
- kernel-64k-debug Fixed in 5.14.0-570.49.1.el9_6
- kernel-64k-debug-core Fixed in 5.14.0-570.49.1.el9_6
- kernel-64k-debug-devel Fixed in 5.14.0-570.49.1.el9_6
- kernel-64k-debug-devel-matched Fixed in 5.14.0-570.49.1.el9_6
- kernel-64k-debug-modules Fixed in 5.14.0-570.49.1.el9_6
- kernel-64k-debug-modules-core Fixed in 5.14.0-570.49.1.el9_6
- kernel-64k-debug-modules-extra Fixed in 5.14.0-570.49.1.el9_6
- kernel-64k-devel Fixed in 5.14.0-570.49.1.el9_6
- kernel-64k-devel-matched Fixed in 5.14.0-570.49.1.el9_6
- kernel-64k-modules Fixed in 5.14.0-570.49.1.el9_6
- kernel-64k-modules-core Fixed in 5.14.0-570.49.1.el9_6
- kernel-64k-modules-extra Fixed in 5.14.0-570.49.1.el9_6
- kernel-abi-stablelists Fixed in 5.14.0-570.49.1.el9_6
- kernel-core Fixed in 5.14.0-570.49.1.el9_6
- kernel-cross-headers Fixed in 5.14.0-570.49.1.el9_6
- kernel-debug Fixed in 5.14.0-570.49.1.el9_6
- kernel-debug-core Fixed in 5.14.0-570.49.1.el9_6
- kernel-debug-devel Fixed in 5.14.0-570.49.1.el9_6
- kernel-debug-devel-matched Fixed in 5.14.0-570.49.1.el9_6
- kernel-debug-modules Fixed in 5.14.0-570.49.1.el9_6
- kernel-debug-modules-core Fixed in 5.14.0-570.49.1.el9_6
- kernel-debug-modules-extra Fixed in 5.14.0-570.49.1.el9_6
- kernel-debug-uki-virt Fixed in 5.14.0-570.49.1.el9_6
- kernel-devel Fixed in 5.14.0-570.49.1.el9_6
- kernel-devel-matched Fixed in 5.14.0-570.49.1.el9_6
- kernel-doc Fixed in 5.14.0-570.49.1.el9_6
- kernel-headers Fixed in 5.14.0-570.49.1.el9_6
- kernel-modules Fixed in 5.14.0-570.49.1.el9_6
- kernel-modules-core Fixed in 5.14.0-570.49.1.el9_6
- kernel-modules-extra Fixed in 5.14.0-570.49.1.el9_6
- kernel-rt Fixed in 5.14.0-570.49.1.el9_6
- kernel-rt-64k Fixed in 5.14.0-570.49.1.el9_6
- kernel-rt-64k-core Fixed in 5.14.0-570.49.1.el9_6
- kernel-rt-64k-debug Fixed in 5.14.0-570.49.1.el9_6
- kernel-rt-64k-debug-core Fixed in 5.14.0-570.49.1.el9_6
- kernel-rt-64k-debug-devel Fixed in 5.14.0-570.49.1.el9_6
- kernel-rt-64k-debug-modules Fixed in 5.14.0-570.49.1.el9_6
36 further packages in AlmaLinux 9 not shown (first 40 listed).
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
AlmaLinux 10
- kernel-abi-stablelists Fixed in 6.12.0-55.37.1.el10_0
- kernel-doc Fixed in 6.12.0-55.37.1.el10_0
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 9
- kernel Fixed in 5.14.0-570.49.1.el9_6
- kernel-64k Fixed in 5.14.0-570.49.1.el9_6
- kernel-64k-core Fixed in 5.14.0-570.49.1.el9_6
- kernel-64k-debug Fixed in 5.14.0-570.49.1.el9_6
- kernel-64k-debug-core Fixed in 5.14.0-570.49.1.el9_6
- kernel-64k-debug-devel Fixed in 5.14.0-570.49.1.el9_6
- kernel-64k-debug-devel-matched Fixed in 5.14.0-570.49.1.el9_6
- kernel-64k-debug-modules Fixed in 5.14.0-570.49.1.el9_6
- kernel-64k-debug-modules-core Fixed in 5.14.0-570.49.1.el9_6
- kernel-64k-debug-modules-extra Fixed in 5.14.0-570.49.1.el9_6
- kernel-64k-devel Fixed in 5.14.0-570.49.1.el9_6
- kernel-64k-devel-matched Fixed in 5.14.0-570.49.1.el9_6
- kernel-64k-modules Fixed in 5.14.0-570.49.1.el9_6
- kernel-64k-modules-core Fixed in 5.14.0-570.49.1.el9_6
- kernel-64k-modules-extra Fixed in 5.14.0-570.49.1.el9_6
- kernel-abi-stablelists Fixed in 5.14.0-570.49.1.el9_6
- kernel-core Fixed in 5.14.0-570.49.1.el9_6
- kernel-cross-headers Fixed in 5.14.0-570.49.1.el9_6
- kernel-debug Fixed in 5.14.0-570.49.1.el9_6
- kernel-debug-core Fixed in 5.14.0-570.49.1.el9_6
- kernel-debug-devel Fixed in 5.14.0-570.49.1.el9_6
- kernel-debug-devel-matched Fixed in 5.14.0-570.49.1.el9_6
- kernel-debug-modules Fixed in 5.14.0-570.49.1.el9_6
- kernel-debug-modules-core Fixed in 5.14.0-570.49.1.el9_6
- kernel-debug-modules-extra Fixed in 5.14.0-570.49.1.el9_6
- kernel-debug-uki-virt Fixed in 5.14.0-570.49.1.el9_6
- kernel-devel Fixed in 5.14.0-570.49.1.el9_6
- kernel-devel-matched Fixed in 5.14.0-570.49.1.el9_6
- kernel-doc Fixed in 5.14.0-570.49.1.el9_6
- kernel-headers Fixed in 5.14.0-570.49.1.el9_6
- kernel-modules Fixed in 5.14.0-570.49.1.el9_6
- kernel-modules-core Fixed in 5.14.0-570.49.1.el9_6
- kernel-modules-extra Fixed in 5.14.0-570.49.1.el9_6
- kernel-rt Fixed in 5.14.0-570.49.1.el9_6
- kernel-rt-64k Fixed in 5.14.0-570.49.1.el9_6
- kernel-rt-64k-core Fixed in 5.14.0-570.49.1.el9_6
- kernel-rt-64k-debug Fixed in 5.14.0-570.49.1.el9_6
- kernel-rt-64k-debug-core Fixed in 5.14.0-570.49.1.el9_6
- kernel-rt-64k-debug-devel Fixed in 5.14.0-570.49.1.el9_6
- kernel-rt-64k-debug-modules Fixed in 5.14.0-570.49.1.el9_6
36 further packages in CloudLinux 9 not shown (first 40 listed).
Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 10
- kernel-abi-stablelists Fixed in 6.12.0-55.37.1.el10_0
- kernel-doc Fixed in 6.12.0-55.37.1.el10_0
Derived from AlmaLinux 10. Partial coverage: only packages taken from AlmaLinux 10 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
Debian 12
- linux Fixed in 6.1.153-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- linux Fixed in 6.12.48-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- linux Fixed in 6.16.5-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- linux-hwe-edge No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- linux-aws-5.0 No fix yet
- linux-aws-5.3 No fix yet
- linux-azure No fix yet
- linux-azure-5.3 No fix yet
- linux-azure-edge No fix yet
- linux-gcp No fix yet
- linux-gcp-5.3 No fix yet
- linux-gke-4.15 No fix yet
- linux-gke-5.4 No fix yet
- linux-gkeop-5.4 No fix yet
- linux-hwe No fix yet
- linux-hwe-edge No fix yet
- linux-oem No fix yet
- linux-oracle-5.0 No fix yet
- linux-oracle-5.3 No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- linux-aws-5.11 No fix yet
- linux-aws-5.13 No fix yet
- linux-aws-5.8 No fix yet
- linux-azure-5.11 No fix yet
- linux-azure-5.13 No fix yet
- linux-azure-5.8 No fix yet
- linux-azure-fde No fix yet
- linux-gcp-5.11 No fix yet
- linux-gcp-5.13 No fix yet
- linux-gcp-5.8 No fix yet
- linux-gke No fix yet
- linux-gke-5.15 No fix yet
- linux-gkeop No fix yet
- linux-gkeop-5.15 No fix yet
- linux-hwe-5.11 No fix yet
- linux-hwe-5.13 No fix yet
- linux-hwe-5.8 No fix yet
- linux-intel-5.13 No fix yet
- linux-oem-5.10 No fix yet
- linux-oem-5.13 No fix yet
- linux-oem-5.14 No fix yet
- linux-oem-5.6 No fix yet
- linux-oracle-5.11 No fix yet
- linux-oracle-5.13 No fix yet
- linux-oracle-5.8 No fix yet
- linux-raspi2 No fix yet
- linux-riscv No fix yet
- linux-riscv-5.11 No fix yet
- linux-riscv-5.8 No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 22.04 LTS
- linux-allwinner-5.19 No fix yet
- linux-aws-5.19 No fix yet
- linux-aws-6.2 No fix yet
- linux-aws-6.5 No fix yet
- linux-aws-6.8 Fixed in 6.8.0-1041.43~22.04.1
- linux-azure-5.19 No fix yet
- linux-azure-6.2 No fix yet
- linux-azure-6.5 No fix yet
- linux-azure-6.8 Fixed in 6.8.0-1041.47~22.04.1
- linux-azure-fde-5.19 No fix yet
- linux-azure-fde-6.2 No fix yet
- linux-gcp-5.19 No fix yet
- linux-gcp-6.2 No fix yet
- linux-gcp-6.5 No fix yet
- linux-gcp-6.8 Fixed in 6.8.0-1042.45~22.04.1
- linux-hwe-5.19 No fix yet
- linux-hwe-6.2 No fix yet
- linux-hwe-6.5 No fix yet
- linux-hwe-6.8 Fixed in 6.8.0-86.87~22.04.1
- linux-ibm-6.8 Fixed in 6.8.0-1039.39~22.04.1
- linux-intel-iot-realtime No fix yet
- linux-lowlatency-hwe-5.19 No fix yet
- linux-lowlatency-hwe-6.2 No fix yet
- linux-lowlatency-hwe-6.5 No fix yet
- linux-lowlatency-hwe-6.8 Fixed in 6.8.0-86.87.1~22.04.1
- linux-nvidia-6.2 No fix yet
- linux-nvidia-6.5 No fix yet
- linux-nvidia-6.8 Fixed in 6.8.0-1041.44~22.04.2
- linux-oem-5.17 No fix yet
- linux-oem-6.0 No fix yet
- linux-oem-6.1 No fix yet
- linux-oem-6.5 No fix yet
- linux-oracle-6.5 No fix yet
- linux-oracle-6.8 Fixed in 6.8.0-1038.39~22.04.1
- linux-realtime No fix yet
- linux-riscv No fix yet
- linux-riscv-5.19 No fix yet
- linux-riscv-6.5 No fix yet
- linux-riscv-6.8 Fixed in 6.8.0-86.87~22.04.1
- linux-starfive-5.19 No fix yet
2 further packages in Ubuntu 22.04 LTS not shown (first 40 listed).
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 24.04 LTS
- linux Fixed in 6.8.0-86.87
- linux-aws Fixed in 6.8.0-1041.43
- linux-aws-6.14 Fixed in 6.14.0-1015.15~24.04.1
- linux-azure Fixed in 6.8.0-1041.47
- linux-azure-6.11 No fix yet
- linux-azure-6.14 Fixed in 6.14.0-1014.14~24.04.1
- linux-azure-nvidia Fixed in 6.8.0-1029.32
- linux-azure-nvidia-6.14 Fixed in 6.14.0-1007.7
- linux-gcp Fixed in 6.8.0-1042.45
- linux-gcp-6.11 No fix yet
- linux-gcp-6.14 Fixed in 6.14.0-1018.19~24.04.1
- linux-gke Fixed in 6.8.0-1038.43
- linux-gkeop Fixed in 6.8.0-1025.28
- linux-hwe-6.11 No fix yet
- linux-ibm Fixed in 6.8.0-1039.39
- linux-intel No fix yet
- linux-lowlatency Fixed in 6.8.0-86.87.1
- linux-lowlatency-hwe-6.11 No fix yet
- linux-nvidia Fixed in 6.8.0-1041.44
- linux-nvidia-6.11 No fix yet
- linux-nvidia-lowlatency Fixed in 6.8.0-1041.44.1
- linux-nvidia-tegra Fixed in 6.8.0-1012.12
- linux-oem-6.11 No fix yet
- linux-oem-6.14 Fixed in 6.14.0-1014.14
- linux-oem-6.8 No fix yet
- linux-oracle Fixed in 6.8.0-1038.39
- linux-oracle-6.14 Fixed in 6.14.0-1015.15~24.04.1
- linux-raspi Fixed in 6.8.0-1041.45
- linux-raspi-realtime No fix yet
- linux-realtime No fix yet
- linux-riscv No fix yet
- linux-riscv-6.14 Fixed in 6.14.0-34.34.1~24.04.1
- linux-xilinx Fixed in 6.8.0-1018.19
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 25.10
- linux-azure-fde No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Nvidia-BlueField 24.04 LTS
- linux-bluefield Fixed in 6.8.0-1012.16
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro FIPS-updates 24.04 LTS
- linux-aws-fips Fixed in 6.8.0-1041.43+fips1Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-azure-fips Fixed in 6.8.0-1044.50+fips1Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-fips Fixed in 6.8.0-86.87+fips1Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-gcp-fips Fixed in 6.8.0-1042.45+fips1Available with Ubuntu Pro: https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro Realtime 22.04 LTS
- linux-realtime-6.8 Fixed in 6.8.1-1036.37~22.04.1Available with Ubuntu Pro: https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro Realtime 24.04 LTS
- linux-raspi-realtime Fixed in 6.8.0-2032.33Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-realtime Fixed in 6.8.1-1036.37Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-realtime-6.14 Fixed in 6.14.0-1014.14~24.04.1Available with Ubuntu Pro: https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.