01 Record
CVE-2025-21631
block, bfq: fix waker_bfqq UAF after bfq_split_bfqq()
HighPUBLISHEDCNA: Linux
CNA base score7.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
02 Description
block, bfq: fix waker_bfqq UAF after bfq_split_bfqq()
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
- 0.21% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 11.1% of scored records. A rank, not a probability.
- NVD base score
- 7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- 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
- 2025-01-19 10:17Z1 YR AGO
- Last updated
- 2026-08-05 11:53Z2 MO AGO
- Reserved
- 2024-12-29
- Assigning CNA
- Linux
- Record state
- PUBLISHED
- Severity
- High (CVSS 7.8)
- CNA CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-416Use After FreeVariant
- Data version
- 5.2
- Document digest
- 09945bc56b621b98a9e2acc38fee5ba1cb45f2f7bbcafec90bed035989f39ce4
05 Affected products
VendorProductVersionsPlatforms
LinuxLinux63a07379fdb6c72450cb05294461c6016b8b7726 to < f587c1ac68956c4703857d650d9b1cd7bb2ac4d7, de0456460f2abf921e356ed2bd8da87a376680bd to < 2550149fcdf2934155ff625d76ad4e3d4b25bbc6, 0780451f03bf518bc032a7c584de8f92e2d39d7f to < be3eed59ac01f429ac10aaa46e26f653bcf581ab, 1ba0403ac6447f2d63914fb760c44a3b19c44eaf to < bc2aeb35ff167e0c6b0cedf0c96a5c41e6cba1ed, 1ba0403ac6447f2d63914fb760c44a3b19c44eaf to < fcede1f0a043ccefe9bc6ad57f12718e42f63f1d, 0b8bda0ff17156cd3f60944527c9d8c9f99f1583, cae58d19121a70329cf971359e2518c93fec04fe, 5.15.168 to < 5.15.177, 6.1.113 to < 6.1.125, 6.6.54 to < 6.6.72, 6.10.13 to < 6.11, 6.11.2 to < 6.12, 6.12—
06 References
- git.kernel.orghttps://git.kernel.org/stable/c/f587c1ac68956c4703857d650d9b1cd7bb2ac4d7
- git.kernel.orghttps://git.kernel.org/stable/c/2550149fcdf2934155ff625d76ad4e3d4b25bbc6
- git.kernel.orghttps://git.kernel.org/stable/c/be3eed59ac01f429ac10aaa46e26f653bcf581ab
- git.kernel.orghttps://git.kernel.org/stable/c/bc2aeb35ff167e0c6b0cedf0c96a5c41e6cba1ed
- git.kernel.orghttps://git.kernel.org/stable/c/fcede1f0a043ccefe9bc6ad57f12718e42f63f1d
- lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/03/msg00001.html
07 Fixed in
AlmaLinux 9
- kernel Fixed in 5.14.0-611.5.1.el9_7
- kernel-64k Fixed in 5.14.0-611.5.1.el9_7
- kernel-64k-core Fixed in 5.14.0-611.5.1.el9_7
- kernel-64k-debug Fixed in 5.14.0-611.5.1.el9_7
- kernel-64k-debug-core Fixed in 5.14.0-611.5.1.el9_7
- kernel-64k-debug-devel Fixed in 5.14.0-611.5.1.el9_7
- kernel-64k-debug-devel-matched Fixed in 5.14.0-611.5.1.el9_7
- kernel-64k-debug-modules Fixed in 5.14.0-611.5.1.el9_7
- kernel-64k-debug-modules-core Fixed in 5.14.0-611.5.1.el9_7
- kernel-64k-debug-modules-extra Fixed in 5.14.0-611.5.1.el9_7
- kernel-64k-devel Fixed in 5.14.0-611.5.1.el9_7
- kernel-64k-devel-matched Fixed in 5.14.0-611.5.1.el9_7
- kernel-64k-modules Fixed in 5.14.0-611.5.1.el9_7
- kernel-64k-modules-core Fixed in 5.14.0-611.5.1.el9_7
- kernel-64k-modules-extra Fixed in 5.14.0-611.5.1.el9_7
- kernel-abi-stablelists Fixed in 5.14.0-611.5.1.el9_7
- kernel-core Fixed in 5.14.0-611.5.1.el9_7
- kernel-cross-headers Fixed in 5.14.0-611.5.1.el9_7
- kernel-debug Fixed in 5.14.0-611.5.1.el9_7
- kernel-debug-core Fixed in 5.14.0-611.5.1.el9_7
- kernel-debug-devel Fixed in 5.14.0-611.5.1.el9_7
- kernel-debug-devel-matched Fixed in 5.14.0-611.5.1.el9_7
- kernel-debug-modules Fixed in 5.14.0-611.5.1.el9_7
- kernel-debug-modules-core Fixed in 5.14.0-611.5.1.el9_7
- kernel-debug-modules-extra Fixed in 5.14.0-611.5.1.el9_7
- kernel-debug-uki-virt Fixed in 5.14.0-611.5.1.el9_7
- kernel-devel Fixed in 5.14.0-611.5.1.el9_7
- kernel-devel-matched Fixed in 5.14.0-611.5.1.el9_7
- kernel-doc Fixed in 5.14.0-611.5.1.el9_7
- kernel-headers Fixed in 5.14.0-611.5.1.el9_7
- kernel-modules Fixed in 5.14.0-611.5.1.el9_7
- kernel-modules-core Fixed in 5.14.0-611.5.1.el9_7
- kernel-modules-extra Fixed in 5.14.0-611.5.1.el9_7
- kernel-rt Fixed in 5.14.0-611.5.1.el9_7
- kernel-rt-64k Fixed in 5.14.0-611.5.1.el9_7
- kernel-rt-64k-core Fixed in 5.14.0-611.5.1.el9_7
- kernel-rt-64k-debug Fixed in 5.14.0-611.5.1.el9_7
- kernel-rt-64k-debug-core Fixed in 5.14.0-611.5.1.el9_7
- kernel-rt-64k-debug-devel Fixed in 5.14.0-611.5.1.el9_7
- kernel-rt-64k-debug-modules Fixed in 5.14.0-611.5.1.el9_7
34 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.
CloudLinux 9
- kernel Fixed in 5.14.0-611.5.1.el9_7
- kernel-64k Fixed in 5.14.0-611.5.1.el9_7
- kernel-64k-core Fixed in 5.14.0-611.5.1.el9_7
- kernel-64k-debug Fixed in 5.14.0-611.5.1.el9_7
- kernel-64k-debug-core Fixed in 5.14.0-611.5.1.el9_7
- kernel-64k-debug-devel Fixed in 5.14.0-611.5.1.el9_7
- kernel-64k-debug-devel-matched Fixed in 5.14.0-611.5.1.el9_7
- kernel-64k-debug-modules Fixed in 5.14.0-611.5.1.el9_7
- kernel-64k-debug-modules-core Fixed in 5.14.0-611.5.1.el9_7
- kernel-64k-debug-modules-extra Fixed in 5.14.0-611.5.1.el9_7
- kernel-64k-devel Fixed in 5.14.0-611.5.1.el9_7
- kernel-64k-devel-matched Fixed in 5.14.0-611.5.1.el9_7
- kernel-64k-modules Fixed in 5.14.0-611.5.1.el9_7
- kernel-64k-modules-core Fixed in 5.14.0-611.5.1.el9_7
- kernel-64k-modules-extra Fixed in 5.14.0-611.5.1.el9_7
- kernel-abi-stablelists Fixed in 5.14.0-611.5.1.el9_7
- kernel-core Fixed in 5.14.0-611.5.1.el9_7
- kernel-cross-headers Fixed in 5.14.0-611.5.1.el9_7
- kernel-debug Fixed in 5.14.0-611.5.1.el9_7
- kernel-debug-core Fixed in 5.14.0-611.5.1.el9_7
- kernel-debug-devel Fixed in 5.14.0-611.5.1.el9_7
- kernel-debug-devel-matched Fixed in 5.14.0-611.5.1.el9_7
- kernel-debug-modules Fixed in 5.14.0-611.5.1.el9_7
- kernel-debug-modules-core Fixed in 5.14.0-611.5.1.el9_7
- kernel-debug-modules-extra Fixed in 5.14.0-611.5.1.el9_7
- kernel-debug-uki-virt Fixed in 5.14.0-611.5.1.el9_7
- kernel-devel Fixed in 5.14.0-611.5.1.el9_7
- kernel-devel-matched Fixed in 5.14.0-611.5.1.el9_7
- kernel-doc Fixed in 5.14.0-611.5.1.el9_7
- kernel-headers Fixed in 5.14.0-611.5.1.el9_7
- kernel-modules Fixed in 5.14.0-611.5.1.el9_7
- kernel-modules-core Fixed in 5.14.0-611.5.1.el9_7
- kernel-modules-extra Fixed in 5.14.0-611.5.1.el9_7
- kernel-rt Fixed in 5.14.0-611.5.1.el9_7
- kernel-rt-64k Fixed in 5.14.0-611.5.1.el9_7
- kernel-rt-64k-core Fixed in 5.14.0-611.5.1.el9_7
- kernel-rt-64k-debug Fixed in 5.14.0-611.5.1.el9_7
- kernel-rt-64k-debug-core Fixed in 5.14.0-611.5.1.el9_7
- kernel-rt-64k-debug-devel Fixed in 5.14.0-611.5.1.el9_7
- kernel-rt-64k-debug-modules Fixed in 5.14.0-611.5.1.el9_7
34 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.
Debian 12
- linux Fixed in 6.1.128-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- linux Fixed in 6.12.10-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- linux Fixed in 6.12.10-1
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-5.15 Fixed in 5.15.0-1080.87~20.04.1
- linux-aws-5.8 No fix yet
- linux-azure-5.11 No fix yet
- linux-azure-5.13 No fix yet
- linux-azure-5.15 Fixed in 5.15.0-1086.95~20.04.1
- 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-5.15 Fixed in 5.15.0-1081.90~20.04.1
- 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-5.15 Fixed in 5.15.0-136.147~20.04.1
- linux-hwe-5.8 No fix yet
- linux-ibm-5.15 Fixed in 5.15.0-1074.77~20.04.1
- linux-intel-5.13 No fix yet
- linux-intel-iotg-5.15 Fixed in 5.15.0-1077.83~20.04.1
- linux-lowlatency-hwe-5.15 Fixed in 5.15.0-135.146~20.04.1
- 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-5.15 Fixed in 5.15.0-1077.83~20.04.1
- 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-5.15 Fixed in 5.15.0-1075.79~20.04.1
- 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 Fixed in 5.15.0-135.146
- linux-allwinner-5.19 No fix yet
- linux-aws Fixed in 5.15.0-1080.87
- 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 6.8.0-1029.31~22.04.1
- linux-azure Fixed in 5.15.0-1084.93
- 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 6.8.0-1029.34~22.04.1
- linux-azure-fde Fixed in 5.15.0-1084.93.1
- linux-azure-fde-5.19 No fix yet
- linux-azure-fde-6.2 No fix yet
- linux-gcp Fixed in 5.15.0-1079.88
- 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 6.8.0-1030.32~22.04.1
- linux-gke Fixed in 5.15.0-1077.83
- linux-gkeop Fixed in 5.15.0-1062.70
- 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 6.8.0-60.63~22.04.1
- linux-ibm Fixed in 5.15.0-1072.75
- linux-ibm-6.8 Fixed in 6.8.0-1026.26~22.04.1
- linux-intel-iot-realtime Fixed in 5.15.0-1073.75
- linux-intel-iotg Fixed in 5.15.0-1075.81
- linux-kvm Fixed in 5.15.0-1076.81
- linux-lowlatency Fixed in 5.15.0-135.146
- 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 6.8.0-60.63.1~22.04.1
- linux-nvidia Fixed in 5.15.0-1074.75
- linux-nvidia-6.2 No fix yet
- linux-nvidia-6.5 No fix yet
- linux-nvidia-6.8 Fixed in 6.8.0-1028.31~22.04.1
19 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 6.8.0-60.63
- linux-aws Fixed in 6.8.0-1029.31
- linux-azure Fixed in 6.8.0-1029.34
- linux-azure-nvidia Fixed in 6.8.0-1016.17
- linux-gcp Fixed in 6.8.0-1030.32
- linux-gke Fixed in 6.8.0-1025.29
- linux-gkeop Fixed in 6.8.0-1012.14
- linux-hwe-6.11 Fixed in 6.11.0-21.21~24.04.1
- linux-ibm Fixed in 6.8.0-1026.26
- linux-lowlatency Fixed in 6.8.0-60.63.1
- linux-nvidia Fixed in 6.8.0-1028.31
- linux-nvidia-lowlatency Fixed in 6.8.0-1028.31.1
- linux-nvidia-tegra Fixed in 6.8.0-1008.8
- linux-oem-6.11 Fixed in 6.11.0-1017.17
- linux-oem-6.8 Fixed in 6.8.0-1028.28
- linux-oracle Fixed in 6.8.0-1026.27
- linux-raspi Fixed in 6.8.0-1028.32
- linux-raspi-realtime No fix yet
- linux-riscv Fixed in 6.8.0-60.63.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Nvidia-BlueField 22.04 LTS
- linux-bluefield Fixed in 5.15.0-1062.64
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 20.04 LTS
- linux-nvidia-tegra-5.15 Fixed in 5.15.0-1039.39~20.04.1Available with Ubuntu Pro (Infra-only): 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 FIPS-updates 22.04 LTS
- linux-aws-fips Fixed in 5.15.0-1080.87+fips1Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-azure-fips Fixed in 5.15.0-1083.92+fips1Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-fips Fixed in 5.15.0-135.146+fips1Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-gcp-fips Fixed in 5.15.0-1079.88+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 Fixed in 5.15.0-1080.88Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-realtime-6.8 Fixed in 6.8.1-1022.23~22.04.1Available 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 6.8.0-2023.24Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-realtime Fixed in 6.8.1-1022.23Available 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.