CVE-2026-68138
net/sched: serialize qdisc_rtab_list against concurrent get/put
02 Description
net/sched: serialize qdisc_rtab_list against concurrent get/put
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
- 0.22% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 12.7% 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
- Received. 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
- 2026-08-10 11:59Z2 MO AGO
- Last updated
- 2026-10-19 20:58Z9 DAYS AGO
- Reserved
- 2026-07-30
- 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
- Data version
- 5.2
- Document digest
- b2d294709bc89b56d124fa18e1ed85470e3a5f17237779ecd1026b37f6e3f7e9
05 Affected products
06 References
- git.kernel.orghttps://git.kernel.org/stable/c/1b050d09dd1a0ddae83bf012cf4956b7a960235f
- git.kernel.orghttps://git.kernel.org/stable/c/6e0241f6cbb149d926ee8efee2c734fea71452cf
- git.kernel.orghttps://git.kernel.org/stable/c/f93c89392bd3b180b5b7abc6fdae8e3dd667a313
- git.kernel.orghttps://git.kernel.org/stable/c/4131dd0b6f67acddd616ed7c244e1d3eedd46e7b
- git.kernel.orghttps://git.kernel.org/stable/c/d981098b76756ed71666a27518eeb69883657c43
- git.kernel.orghttps://git.kernel.org/stable/c/8ddc2eb0d2da9c83f54f1e5720525b461b8480c4
- git.kernel.orghttps://git.kernel.org/stable/c/fb29e1b41052488ee3f2d115d4a870497ebd7f7d
- git.kernel.orghttps://git.kernel.org/stable/c/f43ee0c0730d6191629b5ee1ceae27b1ebfdc047
07 Fixed in
AlmaLinux 8
- bpftool Fixed in 4.18.0-553.178.1.el8_10
- kernel Fixed in 4.18.0-553.178.1.el8_10
- kernel-abi-stablelists Fixed in 4.18.0-553.178.1.el8_10
- kernel-core Fixed in 4.18.0-553.178.1.el8_10
- kernel-cross-headers Fixed in 4.18.0-553.178.1.el8_10
- kernel-debug Fixed in 4.18.0-553.178.1.el8_10
- kernel-debug-core Fixed in 4.18.0-553.178.1.el8_10
- kernel-debug-devel Fixed in 4.18.0-553.178.1.el8_10
- kernel-debug-modules Fixed in 4.18.0-553.178.1.el8_10
- kernel-debug-modules-extra Fixed in 4.18.0-553.178.1.el8_10
- kernel-devel Fixed in 4.18.0-553.178.1.el8_10
- kernel-doc Fixed in 4.18.0-553.178.1.el8_10
- kernel-headers Fixed in 4.18.0-553.178.1.el8_10
- kernel-modules Fixed in 4.18.0-553.178.1.el8_10
- kernel-modules-extra Fixed in 4.18.0-553.178.1.el8_10
- kernel-rt Fixed in 4.18.0-553.178.1.rt7.519.el8_10
- kernel-rt-core Fixed in 4.18.0-553.178.1.rt7.519.el8_10
- kernel-rt-debug Fixed in 4.18.0-553.178.1.rt7.519.el8_10
- kernel-rt-debug-core Fixed in 4.18.0-553.178.1.rt7.519.el8_10
- kernel-rt-debug-devel Fixed in 4.18.0-553.178.1.rt7.519.el8_10
- kernel-rt-debug-modules Fixed in 4.18.0-553.178.1.rt7.519.el8_10
- kernel-rt-debug-modules-extra Fixed in 4.18.0-553.178.1.rt7.519.el8_10
- kernel-rt-devel Fixed in 4.18.0-553.178.1.rt7.519.el8_10
- kernel-rt-modules Fixed in 4.18.0-553.178.1.rt7.519.el8_10
- kernel-rt-modules-extra Fixed in 4.18.0-553.178.1.rt7.519.el8_10
- kernel-tools Fixed in 4.18.0-553.178.1.el8_10
- kernel-tools-libs Fixed in 4.18.0-553.178.1.el8_10
- kernel-tools-libs-devel Fixed in 4.18.0-553.178.1.el8_10
- kernel-zfcpdump Fixed in 4.18.0-553.178.1.el8_10
- kernel-zfcpdump-core Fixed in 4.18.0-553.178.1.el8_10
- kernel-zfcpdump-devel Fixed in 4.18.0-553.178.1.el8_10
- kernel-zfcpdump-modules Fixed in 4.18.0-553.178.1.el8_10
- kernel-zfcpdump-modules-extra Fixed in 4.18.0-553.178.1.el8_10
- perf Fixed in 4.18.0-553.178.1.el8_10
- python3-perf Fixed in 4.18.0-553.178.1.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 4.18.0-553.178.1.el8_10
- kernel Fixed in 4.18.0-553.178.1.el8_10
- kernel-abi-stablelists Fixed in 4.18.0-553.178.1.el8_10
- kernel-core Fixed in 4.18.0-553.178.1.el8_10
- kernel-cross-headers Fixed in 4.18.0-553.178.1.el8_10
- kernel-debug Fixed in 4.18.0-553.178.1.el8_10
- kernel-debug-core Fixed in 4.18.0-553.178.1.el8_10
- kernel-debug-devel Fixed in 4.18.0-553.178.1.el8_10
- kernel-debug-modules Fixed in 4.18.0-553.178.1.el8_10
- kernel-debug-modules-extra Fixed in 4.18.0-553.178.1.el8_10
- kernel-devel Fixed in 4.18.0-553.178.1.el8_10
- kernel-doc Fixed in 4.18.0-553.178.1.el8_10
- kernel-headers Fixed in 4.18.0-553.178.1.el8_10
- kernel-modules Fixed in 4.18.0-553.178.1.el8_10
- kernel-modules-extra Fixed in 4.18.0-553.178.1.el8_10
- kernel-rt Fixed in 4.18.0-553.178.1.rt7.519.el8_10
- kernel-rt-core Fixed in 4.18.0-553.178.1.rt7.519.el8_10
- kernel-rt-debug Fixed in 4.18.0-553.178.1.rt7.519.el8_10
- kernel-rt-debug-core Fixed in 4.18.0-553.178.1.rt7.519.el8_10
- kernel-rt-debug-devel Fixed in 4.18.0-553.178.1.rt7.519.el8_10
- kernel-rt-debug-modules Fixed in 4.18.0-553.178.1.rt7.519.el8_10
- kernel-rt-debug-modules-extra Fixed in 4.18.0-553.178.1.rt7.519.el8_10
- kernel-rt-devel Fixed in 4.18.0-553.178.1.rt7.519.el8_10
- kernel-rt-modules Fixed in 4.18.0-553.178.1.rt7.519.el8_10
- kernel-rt-modules-extra Fixed in 4.18.0-553.178.1.rt7.519.el8_10
- kernel-tools Fixed in 4.18.0-553.178.1.el8_10
- kernel-tools-libs Fixed in 4.18.0-553.178.1.el8_10
- kernel-tools-libs-devel Fixed in 4.18.0-553.178.1.el8_10
- kernel-zfcpdump Fixed in 4.18.0-553.178.1.el8_10
- kernel-zfcpdump-core Fixed in 4.18.0-553.178.1.el8_10
- kernel-zfcpdump-devel Fixed in 4.18.0-553.178.1.el8_10
- kernel-zfcpdump-modules Fixed in 4.18.0-553.178.1.el8_10
- kernel-zfcpdump-modules-extra Fixed in 4.18.0-553.178.1.el8_10
- perf Fixed in 4.18.0-553.178.1.el8_10
- python3-perf Fixed in 4.18.0-553.178.1.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 6.1.187-1
- linux-6.12 Fixed in 6.12.107-1~deb12u1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- linux Fixed in 6.12.105-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- linux Fixed in 7.1.6-1
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 No fix yet
- linux-allwinner-5.19 No fix yet
- linux-aws 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 No fix yet
- linux-azure 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-6.8 No fix yet
- linux-azure-fde No fix yet
- linux-azure-fde-5.19 No fix yet
- linux-azure-fde-6.2 No fix yet
- linux-azure-fde-6.8 No fix yet
- linux-gcp 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 No fix yet
- linux-gke No fix yet
- linux-gkeop 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-hwe-6.8 No fix yet
- linux-ibm No fix yet
- linux-ibm-6.8 No fix yet
- linux-intel-iot-realtime No fix yet
- linux-intel-iotg No fix yet
- linux-kvm No fix yet
- linux-lowlatency 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 No fix yet
- linux-nvidia No fix yet
- linux-nvidia-6.2 No fix yet
- linux-nvidia-6.5 No fix yet
20 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 No fix yet
- linux-aws No fix yet
- linux-aws-6.14 No fix yet
- linux-aws-6.17 No fix yet
- linux-aws-7.0 Fixed in 7.0.0-1014.14~24.04.1
- linux-azure No fix yet
- linux-azure-6.11 No fix yet
- linux-azure-6.14 No fix yet
- linux-azure-6.17 No fix yet
- linux-azure-7.0 Fixed in 7.0.0-1017.17~24.04.1
- linux-azure-fde No fix yet
- linux-azure-fde-6.14 No fix yet
- linux-azure-fde-6.17 No fix yet
- linux-azure-fde-7.0 Fixed in 7.0.0-1016.16~24.04.1
- linux-azure-nvidia No fix yet
- linux-azure-nvidia-6.14 No fix yet
- linux-gcp No fix yet
- linux-gcp-6.11 No fix yet
- linux-gcp-6.14 No fix yet
- linux-gcp-6.17 No fix yet
- linux-gcp-7.0 Fixed in 7.0.0-1014.14~24.04.1
- linux-gke No fix yet
- linux-gkeop No fix yet
- linux-hwe-6.11 No fix yet
- linux-hwe-6.14 No fix yet
- linux-hwe-6.17 No fix yet
- linux-hwe-7.0 Fixed in 7.0.0-38.38~24.04.4
- linux-ibm No fix yet
- linux-lowlatency No fix yet
- linux-lowlatency-hwe-6.11 No fix yet
- linux-nvidia No fix yet
- linux-nvidia-6.11 No fix yet
- linux-nvidia-6.17 No fix yet
- linux-nvidia-7.0 No fix yet
- linux-nvidia-lowlatency No fix yet
- linux-nvidia-tegra Fixed in 6.8.0-1035.38
- linux-oem-6.11 No fix yet
- linux-oem-6.14 No fix yet
- linux-oem-6.17 No fix yet
- linux-oem-6.8 No fix yet
12 further packages in Ubuntu 24.04 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 26.04 LTS
- linux Fixed in 7.0.0-38.38
- linux-aws Fixed in 7.0.0-1014.14
- linux-azure Fixed in 7.0.0-1017.17
- linux-azure-fde Fixed in 7.0.0-1016.16
- linux-gcp Fixed in 7.0.0-1014.14
- linux-gke Fixed in 7.0.0-1008.9
- linux-ibm Fixed in 7.0.0-1015.15
- linux-nvidia No fix yet
- linux-nvidia-bos No fix yet
- linux-oem-7.0 Fixed in 7.0.0-1015.15
- linux-oracle Fixed in 7.0.0-1013.13
- linux-raspi No fix yet
- linux-realtime Fixed in 7.0.0-38.38.1
- linux-riscv Fixed in 7.0.0-38.38.1
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 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 No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 18.04 LTS
- linux-aws-5.4 No fix yet
- linux-azure-5.4 No fix yet
- linux-gcp-5.4 No fix yet
- linux-hwe-5.4 No fix yet
- linux-ibm-5.4 No fix yet
- linux-oracle-5.4 No fix yet
- linux-raspi-5.4 No fix yet
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 No fix yet
- linux-aws No fix yet
- linux-aws-5.15 No fix yet
- linux-azure No fix yet
- linux-azure-5.15 No fix yet
- linux-azure-fde-5.15 No fix yet
- linux-bluefield No fix yet
- linux-gcp No fix yet
- linux-gcp-5.15 No fix yet
- linux-hwe-5.15 No fix yet
- linux-ibm No fix yet
- linux-ibm-5.15 No fix yet
- linux-intel-iotg-5.15 No fix yet
- linux-iot No fix yet
- linux-kvm No fix yet
- linux-lowlatency-hwe-5.15 No fix yet
- linux-nvidia-tegra-5.15 No fix yet
- linux-oracle No fix yet
- linux-oracle-5.15 No fix yet
- linux-raspi No fix yet
- linux-riscv-5.15 No fix yet
- linux-xilinx-zynqmp No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro FIPS-preview 22.04 LTS
- linux-aws-fips No fix yet
- linux-azure-fips No fix yet
- linux-fips No fix yet
- linux-gcp-fips No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro FIPS-updates 20.04 LTS
- linux-aws-fips No fix yet
- linux-azure-fips No fix yet
- linux-fips No fix yet
- linux-gcp-fips No fix yet
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 No fix yet
- linux-azure-fips No fix yet
- linux-fips No fix yet
- linux-gcp-fips No fix yet
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 No fix yet
- linux-azure-fips No fix yet
- linux-fips No fix yet
- linux-gcp-fips No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro FIPS 20.04 LTS
- linux-aws-fips No fix yet
- linux-azure-fips No fix yet
- linux-fips No fix yet
- linux-gcp-fips No fix yet
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-intel-iot-realtime No fix yet
- linux-realtime No fix yet
- linux-realtime-6.8 No fix yet
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 No fix yet
- linux-realtime No fix yet
- linux-realtime-6.14 No fix yet
- linux-realtime-6.17 No fix yet
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.