01 Record
CVE-2025-40186
tcp: Don't call reqsk_fastopen_remove() in tcp_conn_request().
HighPUBLISHEDCNA: Linux
CNA base score8.1 CVSS v3.xCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
02 Description
tcp: Don't call reqsk_fastopen_remove() in tcp_conn_request().
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
- EPSS probability
- 0.58% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 47.4% of scored records. A rank, not a probability.
- NVD base score
- 8.1 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Deferred. NVD last modified this record on 2026-10-19.
- Red Hat severity
- Important. 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
- 2025-11-12 21:56Z11 MO AGO
- Last updated
- 2026-10-15 22:02Z13 DAYS AGO
- Reserved
- 2025-04-16
- Assigning CNA
- Linux
- Record state
- PUBLISHED
- Severity
- High (CVSS 8.1)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-826Premature Release of Resource During Expected LifetimeBase
- Data version
- 5.2
- Document digest
- 0dd7ee53a4e42c66d1d032effcd1778c9a2c47246fcea65c8fe084dd4af5a1c6
05 Affected products
VendorProductVersionsPlatforms
LinuxLinux7ec092a91ff351dcde89c23e795b73a328274db6 to < e359b742eac1eac75cff4e38ee2e8cea492acd9b, a4378dedd6e07e62f2fccb17d78c9665718763d0 to < ff6a8883f96a5bc74241ce5b3d431a6dcfa2124d, 33a4fdf0b4a25f8ce65380c3b0136b407ca57609 to < eb85ad5f23268d64b037bfb545cbcba3752f90c7, 17d699727577814198d744d6afe54735c6b54c99 to < 643a94b0cf767325e953591c212be2eb826b9d7f, dfd06131107e7b699ef1e2a24ed2f7d17c917753 to < 422c1c173c39bbbae1e0eaaf8aefe40b2596233b, fa4749c065644af4db496b338452a69a3e5147d9 to < c11ace909e873118295e9eb22dc8c58b0b50eb32, 45c8a6cc2bcd780e634a6ba8e46bffbdf1fc5c01 to < 64dc47a13aa3d9daf7cec29b44dca8e22a6aea15, 45c8a6cc2bcd780e634a6ba8e46bffbdf1fc5c01 to < 2e7cbbbe3d61c63606994b7ff73c72537afe2e1c, ae313d14b45eca7a6bb29cb9bf396d977e7d28fb, 5.4.300 to < 5.4.301, 5.10.245 to < 5.10.246, 5.15.194 to < 5.15.195, 6.1.154 to < 6.1.157, 6.6.108 to < 6.6.113, 6.12.49 to < 6.12.54, 6.16.9 to < 6.17, 6.17—
06 References
- git.kernel.orghttps://git.kernel.org/stable/c/e359b742eac1eac75cff4e38ee2e8cea492acd9b
- git.kernel.orghttps://git.kernel.org/stable/c/ff6a8883f96a5bc74241ce5b3d431a6dcfa2124d
- git.kernel.orghttps://git.kernel.org/stable/c/eb85ad5f23268d64b037bfb545cbcba3752f90c7
- git.kernel.orghttps://git.kernel.org/stable/c/643a94b0cf767325e953591c212be2eb826b9d7f
- git.kernel.orghttps://git.kernel.org/stable/c/422c1c173c39bbbae1e0eaaf8aefe40b2596233b
- git.kernel.orghttps://git.kernel.org/stable/c/c11ace909e873118295e9eb22dc8c58b0b50eb32
- git.kernel.orghttps://git.kernel.org/stable/c/64dc47a13aa3d9daf7cec29b44dca8e22a6aea15
- git.kernel.orghttps://git.kernel.org/stable/c/2e7cbbbe3d61c63606994b7ff73c72537afe2e1c
07 Fixed in
AlmaLinux 8
- bpftool Fixed in 4.18.0-553.87.1.el8_10
- kernel Fixed in 4.18.0-553.87.1.el8_10
- kernel-abi-stablelists Fixed in 4.18.0-553.87.1.el8_10
- kernel-core Fixed in 4.18.0-553.87.1.el8_10
- kernel-cross-headers Fixed in 4.18.0-553.87.1.el8_10
- kernel-debug Fixed in 4.18.0-553.87.1.el8_10
- kernel-debug-core Fixed in 4.18.0-553.87.1.el8_10
- kernel-debug-devel Fixed in 4.18.0-553.87.1.el8_10
- kernel-debug-modules Fixed in 4.18.0-553.87.1.el8_10
- kernel-debug-modules-extra Fixed in 4.18.0-553.87.1.el8_10
- kernel-devel Fixed in 4.18.0-553.87.1.el8_10
- kernel-doc Fixed in 4.18.0-553.87.1.el8_10
- kernel-headers Fixed in 4.18.0-553.87.1.el8_10
- kernel-modules Fixed in 4.18.0-553.87.1.el8_10
- kernel-modules-extra Fixed in 4.18.0-553.87.1.el8_10
- kernel-rt Fixed in 4.18.0-553.87.1.rt7.428.el8_10
- kernel-rt-core Fixed in 4.18.0-553.87.1.rt7.428.el8_10
- kernel-rt-debug Fixed in 4.18.0-553.87.1.rt7.428.el8_10
- kernel-rt-debug-core Fixed in 4.18.0-553.87.1.rt7.428.el8_10
- kernel-rt-debug-devel Fixed in 4.18.0-553.87.1.rt7.428.el8_10
- kernel-rt-debug-modules Fixed in 4.18.0-553.87.1.rt7.428.el8_10
- kernel-rt-debug-modules-extra Fixed in 4.18.0-553.87.1.rt7.428.el8_10
- kernel-rt-devel Fixed in 4.18.0-553.87.1.rt7.428.el8_10
- kernel-rt-modules Fixed in 4.18.0-553.87.1.rt7.428.el8_10
- kernel-rt-modules-extra Fixed in 4.18.0-553.87.1.rt7.428.el8_10
- kernel-tools Fixed in 4.18.0-553.87.1.el8_10
- kernel-tools-libs Fixed in 4.18.0-553.87.1.el8_10
- kernel-tools-libs-devel Fixed in 4.18.0-553.87.1.el8_10
- kernel-zfcpdump Fixed in 4.18.0-553.87.1.el8_10
- kernel-zfcpdump-core Fixed in 4.18.0-553.87.1.el8_10
- kernel-zfcpdump-devel Fixed in 4.18.0-553.87.1.el8_10
- kernel-zfcpdump-modules Fixed in 4.18.0-553.87.1.el8_10
- kernel-zfcpdump-modules-extra Fixed in 4.18.0-553.87.1.el8_10
- perf Fixed in 4.18.0-553.87.1.el8_10
- python3-perf Fixed in 4.18.0-553.87.1.el8_10
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 8
- bpftool Fixed in 4.18.0-553.87.1.el8_10
- kernel Fixed in 4.18.0-553.87.1.el8_10
- kernel-abi-stablelists Fixed in 4.18.0-553.87.1.el8_10
- kernel-core Fixed in 4.18.0-553.87.1.el8_10
- kernel-cross-headers Fixed in 4.18.0-553.87.1.el8_10
- kernel-debug Fixed in 4.18.0-553.87.1.el8_10
- kernel-debug-core Fixed in 4.18.0-553.87.1.el8_10
- kernel-debug-devel Fixed in 4.18.0-553.87.1.el8_10
- kernel-debug-modules Fixed in 4.18.0-553.87.1.el8_10
- kernel-debug-modules-extra Fixed in 4.18.0-553.87.1.el8_10
- kernel-devel Fixed in 4.18.0-553.87.1.el8_10
- kernel-doc Fixed in 4.18.0-553.87.1.el8_10
- kernel-headers Fixed in 4.18.0-553.87.1.el8_10
- kernel-modules Fixed in 4.18.0-553.87.1.el8_10
- kernel-modules-extra Fixed in 4.18.0-553.87.1.el8_10
- kernel-rt Fixed in 4.18.0-553.87.1.rt7.428.el8_10
- kernel-rt-core Fixed in 4.18.0-553.87.1.rt7.428.el8_10
- kernel-rt-debug Fixed in 4.18.0-553.87.1.rt7.428.el8_10
- kernel-rt-debug-core Fixed in 4.18.0-553.87.1.rt7.428.el8_10
- kernel-rt-debug-devel Fixed in 4.18.0-553.87.1.rt7.428.el8_10
- kernel-rt-debug-modules Fixed in 4.18.0-553.87.1.rt7.428.el8_10
- kernel-rt-debug-modules-extra Fixed in 4.18.0-553.87.1.rt7.428.el8_10
- kernel-rt-devel Fixed in 4.18.0-553.87.1.rt7.428.el8_10
- kernel-rt-modules Fixed in 4.18.0-553.87.1.rt7.428.el8_10
- kernel-rt-modules-extra Fixed in 4.18.0-553.87.1.rt7.428.el8_10
- kernel-tools Fixed in 4.18.0-553.87.1.el8_10
- kernel-tools-libs Fixed in 4.18.0-553.87.1.el8_10
- kernel-tools-libs-devel Fixed in 4.18.0-553.87.1.el8_10
- kernel-zfcpdump Fixed in 4.18.0-553.87.1.el8_10
- kernel-zfcpdump-core Fixed in 4.18.0-553.87.1.el8_10
- kernel-zfcpdump-devel Fixed in 4.18.0-553.87.1.el8_10
- kernel-zfcpdump-modules Fixed in 4.18.0-553.87.1.el8_10
- kernel-zfcpdump-modules-extra Fixed in 4.18.0-553.87.1.el8_10
- perf Fixed in 4.18.0-553.87.1.el8_10
- python3-perf Fixed in 4.18.0-553.87.1.el8_10
Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 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 6.1.158-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- linux Fixed in 6.12.57-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- linux Fixed in 6.17.6-1
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-azure-5.19 No fix yet
- linux-azure-6.2 No fix yet
- linux-azure-6.5 No fix yet
- 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-hwe-5.19 No fix yet
- linux-hwe-6.2 No fix yet
- linux-hwe-6.5 No fix yet
- 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-nvidia-6.2 No fix yet
- linux-nvidia-6.5 No fix yet
- 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-realtime No fix yet
- linux-riscv No fix yet
- linux-riscv-5.19 No fix yet
- linux-riscv-6.5 No fix yet
- linux-starfive-5.19 No fix yet
- linux-starfive-6.2 No fix yet
- linux-starfive-6.5 No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 24.04 LTS
- linux-aws-6.17 Fixed in 6.17.0-1007.7~24.04.1
- linux-azure-6.11 No fix yet
- linux-gcp-6.11 No fix yet
- linux-gcp-6.17 Fixed in 6.17.0-1008.8~24.04.1
- linux-hwe-6.11 No fix yet
- linux-lowlatency-hwe-6.11 No fix yet
- linux-nvidia-6.17 Fixed in 6.17.0-1008.8
- linux-oem-6.11 No fix yet
- linux-oem-6.17 Fixed in 6.17.0-1011.11
- linux-oem-6.8 No fix yet
- linux-oracle-6.17 Fixed in 6.17.0-1007.7~24.04.1
- linux-raspi-realtime No fix yet
- linux-realtime No fix yet
- linux-riscv No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 25.10
- linux Fixed in 6.17.0-14.14
- linux-aws Fixed in 6.17.0-1007.7
- linux-azure Fixed in 6.17.0-1008.8
- linux-azure-fde No fix yet
- linux-gcp Fixed in 6.17.0-1007.7
- linux-oracle Fixed in 6.17.0-1007.7
- linux-raspi Fixed in 6.17.0-1008.8
- linux-realtime Fixed in 6.17.0-1006.7
- linux-riscv Fixed in 6.17.0-14.14.1
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-realtime-6.17 Fixed in 6.17.0-1006.7~24.04.1Available 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.