synced 3 MIN AGO
01 Record

CVE-2020-36791

net_sched: keep alloc_hash updated after hash allocation

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

net_sched: keep alloc_hash updated after hash allocation

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
0.19% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 9.5% of scored records. A rank, not a probability.
NVD base score
7.1 (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:N/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-08-04.
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
2025-05-07 13:17Z1 YR AGO
Last updated
2026-08-05 08:44Z2 MO AGO
Reserved
2024-02-26
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-125Out-of-bounds ReadBase
  • CWE-805Buffer Access with Incorrect Length ValueBase
Data version
5.2
Document digest
bf425417796e230a6ddc98de80d8cae7d044cbf284d5b42cfa2e582dd32b2781

05 Affected products

VendorProductVersionsPlatforms
LinuxLinux73c29d2f6f8ae731b1e09051b69ed3ba2319482b to < d6cdc5bb19b595486fb2e6661e5138d73a57f454, b974ac51f5834a729de252fc5c1c9de9efd79b45 to < c4453d2833671e3a9f6bd52f0f581056c3736386, 6cb448ee493c8a514c9afa0c346f3f5b3227de85 to < 9f8b6c44be178c2498a00b270872a6e30e7c8266, 478c4b2ffd44e5186c7e22ae7c38a86a5b9cfde5 to < 557d015ffb27b672e24e6ad141fd887783871dc2, dd8142a6fa5270783d415292ec8169f4ea2a5468 to < d23faf32e577922b6da20bf3740625c1105381bf, 2c66ff8d08f81bcf8e8cb22e31e39c051b15336a to < bd3ee8fb6371b45c71c9345cc359b94da2ddefa9, 599be01ee567b61f4471ee8078870847d0a11e8e to < 0d1c3530e1bd38382edef72591b78e877e0edcd3, 4.4.214 to < 4.4.218, 4.9.214 to < 4.9.218, 4.14.171 to < 4.14.175, 4.19.103 to < 4.19.114, 5.4.19 to < 5.4.29, 5.5.3 to < 5.5.14—

06 References

07 Fixed in

Debian 12

  • linux
    Fixed in 5.5.17-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • linux
    Fixed in 5.5.17-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • linux
    Fixed in 5.5.17-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 16.04 LTS

  • linux
    Fixed in 4.4.0-179.209
  • linux-aws
    Fixed in 4.4.0-1107.118
  • linux-aws-hwe
    Fixed in 4.15.0-1066.70~16.04.1
  • linux-azure
    Fixed in 4.15.0-1082.92~16.04.1
  • linux-gcp
    Fixed in 4.15.0-1061.65
  • linux-hwe
    Fixed in 4.15.0-99.100~16.04.1
  • linux-hwe-edge
    No fix yet
  • linux-kvm
    Fixed in 4.4.0-1071.78
  • linux-oracle
    Fixed in 4.15.0-1038.42~16.04.1

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 18.04 LTS

  • linux
    Fixed in 4.15.0-99.100
  • linux-aws
    Fixed in 4.15.0-1066.70
  • 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-kvm
    Fixed in 4.15.0-1059.60
  • linux-oem
    No fix yet
  • linux-oracle
    Fixed in 4.15.0-1038.42
  • 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-raspi-realtime
    No fix yet
  • linux-realtime
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 14.04 LTS

  • linux-aws
    Fixed in 4.4.0-1067.71
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
  • linux-azure
    Fixed in 4.15.0-1082.92~14.04.1
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
  • linux-lts-xenial
    Fixed in 4.4.0-179.209~14.04.1
    Available 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 16.04 LTS

  • linux-fips
    Fixed in 4.4.0-1034.39
    Available 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 FIPS-updates 18.04 LTS

  • linux-fips
    Fixed in 4.15.0-1029.34
    Available 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.