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Fencer Vulns
high 7.8

CVE-2021-33909 json

fs/seq_file.c in the Linux kernel 3.16 through 5.13.x before 5.13.4 does not properly restrict seq buffer allocations, leading to an intege…

published 2021-07-20 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-20581

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
9.8%
EPSS 9.8% chance of exploitation in 30 days, percentile 95%
public exploits
0
none known

Summary

fs/seq_file.c in the Linux kernel 3.16 through 5.13.x before 5.13.4 does not properly restrict seq buffer allocations, leading to an integer overflow, an Out-of-bounds Write, and escalation to root by an unprivileged user, aka CID-8cae8cd89f05.

Patch / fix

  • linux linux_kernel 3.13, 4.4.276, 4.9.276, 4.14.240, 4.19.198, 5.4.134, 5.10.52, 5.12.19, 5.13.4
  • linux Debian 14, Debian 13, Debian 12 5.10.46-2

debian advisories DEBIAN-CVE-2021-33909

  • linux Ubuntu 18.04 LTS 4.15.0-151.157
  • linux Ubuntu 20.04 LTS 5.4.0-80.90
  • linux-aws Ubuntu 18.04 LTS 4.15.0-1109.116
  • linux-aws Ubuntu 20.04 LTS 5.4.0-1054.57
  • linux-gcp Ubuntu 20.04 LTS 5.4.0-1049.53
  • linux-gke Ubuntu 20.04 LTS 5.4.0-1049.52
  • linux-hwe Ubuntu 18.04 LTS 5.3.0-76.72
  • linux-kvm Ubuntu 18.04 LTS 4.15.0-1097.99

ubuntu advisories UBUNTU-CVE-2021-33909

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • redhat-virtualization-host rhev hypervisor 4.4 4.4.7-20210715.1.el8_4
  • redhat-virtualization-host-image-update rhev hypervisor 4.4 4.4.7-20210715.1.el8_4
  • kernel RHEL 7 3.10.0-1160.36.2.el7
  • perf RHEL 7 3.10.0-1160.36.2.el7
  • bpftool RHEL 7 3.10.0-1160.36.2.el7
  • python-perf RHEL 7 3.10.0-1160.36.2.el7
  • kernel-kdump RHEL 7 3.10.0-1160.36.2.el7
  • kernel-tools RHEL 7 3.10.0-1160.36.2.el7

red hat advisories RHSA-2021:2736RHSA-2021:2725RHSA-2021:2726RHSA-2021:2735RHSA-2021:2729RHSA-2021:2728

  • kernel-syms SLES for SAP 15 SP1, SLES 15 SP1-LTSS, SLES 15 SP1-BCL +3 more 4.12.14-197.102.2
  • kernel-source SLES for SAP 15 SP1, SLES 15 SP1-LTSS, SLES 15 SP1-BCL +3 more 4.12.14-197.102.2
  • kernel-default SLES for SAP 15 SP1, SLES 15 SP1-LTSS, SLES 15 SP1-BCL +5 more 4.12.14-197.102.2
  • kernel-obs-build SLES for SAP 15 SP1, SLES 15 SP1-LTSS, SLES 15 SP1-BCL +3 more 4.12.14-197.102.1
  • kernel-rt SLE Micro 5.0, Real Time Module 15 SP2 5.3.18-48.1
  • kernel-syms-rt Real Time Module 15 SP2 5.3.18-48.1
  • kernel-rt_debug Real Time Module 15 SP2 5.3.18-48.1
  • kernel-source-rt Real Time Module 15 SP2 5.3.18-48.1

suse advisories SUSE-SU-2021:3876-1SUSE-SU-2021:2678-1SUSE-SU-2021:2643-1SUSE-SU-2021:2584-1SUSE-SU-2021:2577-1SUSE-SU-2021:2560-1

  • kernel-source openSUSE Tumbleweed 5.14.6-1.4
  • kernel-source openSUSE Tumbleweed 6.6.17-1.1
  • kernel-default openSUSE Leap 15.3 4.12.14-197.102.2
  • kernel-vanilla openSUSE Leap 15.3 4.12.14-197.102.2
  • kernel-kvmsmall openSUSE Leap 15.3 4.12.14-197.102.2
  • kernel-zfcpdump openSUSE Leap 15.3 4.12.14-197.102.2
  • kernel-syms openSUSE Leap 15.2 5.3.18-lp152.84.1
  • kernel-obs-qa openSUSE Leap 15.2 5.3.18-lp152.84.1

opensuse advisories openSUSE-SU-2024:10728-1openSUSE-SU-2024:13704-1openSUSE-SU-2021:3876-1openSUSE-SU-2021:1076-1openSUSE-SU-2021:2427-1openSUSE-SU-2021:2415-1

  • kernel Rocky Linux 8 4.18.0-305.10.2.el8_4

rocky linux advisories RLSA-2021:2714

  • kernel CBL-Mariner 2.0 5.10.78.1-1

azure linux advisories AZL-6565

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

  • linux Arch Linux 5.13.4.arch1-1
  • linux-zen Arch Linux 5.13.4.zen1-1
  • linux-hardened Arch Linux 5.12.19.hardened1-1
  • linux-lts Arch Linux 5.10.52-1

arch linux advisories AVG-2181AVG-2182AVG-2183AVG-2184

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2021-33909 updated cvss 7.8

kernel: size_t-to-int conversion vulnerability in the filesystem layer

  • Red Hat Enterprise Linux 7 perf, kernel, kernel-alt, python-perf, kernel-kdump, kernel-tools, +3 more
    affected: workaround, no fix planned “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.”
  • Red Hat CodeReady Linux Builder (v. 8) kernel-debuginfo-common-x86_64 4.18.0-305.10.2.el8_4, kernel-debuginfo-common-aarch64 4.18.0-305.10.2.el8_4, kernel-debuginfo-common-ppc64le 4.18.0-305.10.2.el8_4
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2021:2714
  • Red Hat CodeReady Linux Builder EUS (v. 8.1) kernel-debuginfo-common-x86_64 4.18.0-147.51.2.el8_1, kernel-debuginfo-common-aarch64 4.18.0-147.51.2.el8_1, kernel-debuginfo-common-ppc64le 4.18.0-147.51.2.el8_1
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2021:2722
  • Red Hat CodeReady Linux Builder EUS (v. 8.2) kernel-debuginfo-common-x86_64 4.18.0-193.60.2.el8_2, kernel-debuginfo-common-aarch64 4.18.0-193.60.2.el8_2, kernel-debuginfo-common-ppc64le 4.18.0-193.60.2.el8_2
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2021:2718
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-305.10.2.el8_4, kernel 4.18.0-305.10.2.el8_4, bpftool 4.18.0-305.10.2.el8_4, kpatch-patch-4_18_0-305 1-3.el8, kernel-core 4.18.0-305.10.2.el8_4, kernel-tools 4.18.0-305.10.2.el8_4, +18 more
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2021:2714
  • Red Hat Enterprise Linux BaseOS EUS (v. 8.1) perf 4.18.0-147.51.2.el8_1, kernel 4.18.0-147.51.2.el8_1, bpftool 4.18.0-147.51.2.el8_1, kernel-core 4.18.0-147.51.2.el8_1, kernel-tools 4.18.0-147.51.2.el8_1, python3-perf 4.18.0-147.51.2.el8_1, +24 more
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2021:2722
  • Red Hat Enterprise Linux BaseOS EUS (v. 8.2) perf 4.18.0-193.60.2.el8_2, kernel 4.18.0-193.60.2.el8_2, bpftool 4.18.0-193.60.2.el8_2, kernel-core 4.18.0-193.60.2.el8_2, kernel-tools 4.18.0-193.60.2.el8_2, python3-perf 4.18.0-193.60.2.el8_2, +27 more
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2021:2718
  • Red Hat Enterprise Linux Client (v. 7) perf 3.10.0-1160.36.2.el7, kernel 3.10.0-1160.36.2.el7, bpftool 3.10.0-1160.36.2.el7, python-perf 3.10.0-1160.36.2.el7, kernel-tools 3.10.0-1160.36.2.el7, kernel-tools-libs 3.10.0-1160.36.2.el7, +2 more Red Hat Enterprise Linux Client Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1160.36.2.el7
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2021:2725
show 30 more
  • Red Hat Enterprise Linux ComputeNode EUS (v. 7.7) perf 3.10.0-1062.52.2.el7, kernel 3.10.0-1062.52.2.el7, bpftool 3.10.0-1062.52.2.el7, python-perf 3.10.0-1062.52.2.el7, kernel-tools 3.10.0-1062.52.2.el7, kernel-tools-libs 3.10.0-1062.52.2.el7, +2 more
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2021:2728
  • Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1160.36.2.el7
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2021:2725
  • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.7) kernel-debuginfo-common-x86_64 3.10.0-1062.52.2.el7
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2021:2728
  • Red Hat Enterprise Linux for Real Time (v. 7) kernel-rt 3.10.0-1160.36.2.rt56.1179.el7, kernel-rt-trace 3.10.0-1160.36.2.rt56.1179.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-1160.36.2.rt56.1179.el7 Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt 3.10.0-1160.36.2.rt56.1179.el7, kernel-rt-kvm 3.10.0-1160.36.2.rt56.1179.el7, kernel-rt-trace 3.10.0-1160.36.2.rt56.1179.el7, kernel-rt-debug-kvm 3.10.0-1160.36.2.rt56.1179.el7, kernel-rt-trace-kvm 3.10.0-1160.36.2.rt56.1179.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-1160.36.2.rt56.1179.el7
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2021:2726
  • Red Hat Enterprise Linux Real Time (v. 8) kernel-rt 4.18.0-305.10.2.rt7.83.el8_4, kernel-rt-core 4.18.0-305.10.2.rt7.83.el8_4, kernel-rt-modules 4.18.0-305.10.2.rt7.83.el8_4, kernel-rt-debug-core 4.18.0-305.10.2.rt7.83.el8_4, kernel-rt-debug-modules 4.18.0-305.10.2.rt7.83.el8_4, kernel-rt-modules-extra 4.18.0-305.10.2.rt7.83.el8_4, +2 more
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2021:2715
  • Red Hat Enterprise Linux Real Time EUS (v. 8.2) kernel-rt 4.18.0-193.60.2.rt13.112.el8_2, kernel-rt-core 4.18.0-193.60.2.rt13.112.el8_2, kernel-rt-modules 4.18.0-193.60.2.rt13.112.el8_2, kernel-rt-debug-core 4.18.0-193.60.2.rt13.112.el8_2, kernel-rt-debug-modules 4.18.0-193.60.2.rt13.112.el8_2, kernel-rt-modules-extra 4.18.0-193.60.2.rt13.112.el8_2, +2 more
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2021:2719
  • Red Hat Enterprise Linux Real Time for NFV (v. 8) kernel-rt 4.18.0-305.10.2.rt7.83.el8_4, kernel-rt-kvm 4.18.0-305.10.2.rt7.83.el8_4, kernel-rt-core 4.18.0-305.10.2.rt7.83.el8_4, kernel-rt-modules 4.18.0-305.10.2.rt7.83.el8_4, kernel-rt-debug-kvm 4.18.0-305.10.2.rt7.83.el8_4, kernel-rt-debug-core 4.18.0-305.10.2.rt7.83.el8_4, +4 more
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2021:2715
  • Red Hat Enterprise Linux Real Time for NFV EUS (v. 8.2) kernel-rt 4.18.0-193.60.2.rt13.112.el8_2, kernel-rt-kvm 4.18.0-193.60.2.rt13.112.el8_2, kernel-rt-core 4.18.0-193.60.2.rt13.112.el8_2, kernel-rt-modules 4.18.0-193.60.2.rt13.112.el8_2, kernel-rt-debug-kvm 4.18.0-193.60.2.rt13.112.el8_2, kernel-rt-debug-core 4.18.0-193.60.2.rt13.112.el8_2, +4 more
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2021:2719
  • Red Hat Enterprise Linux Server (v. 6 ELS) perf 2.6.32-754.41.2.el6, kernel 2.6.32-754.41.2.el6, kernel-kdump 2.6.32-754.41.2.el6, kernel-firmware 2.6.32-754.41.2.el6, kernel-abi-whitelists 2.6.32-754.41.2.el6, kernel-debuginfo-common-i686 2.6.32-754.41.2.el6, +2 more
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2021:2735
  • Red Hat Enterprise Linux Server (v. 7) perf 3.10.0-1160.36.2.el7, kernel 3.10.0-1160.36.2.el7, bpftool 3.10.0-1160.36.2.el7, kpatch-patch-3_10_0-1160 1-7.el7, python-perf 3.10.0-1160.36.2.el7, kernel-kdump 3.10.0-1160.36.2.el7, +17 more
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2021:2725
  • Red Hat Enterprise Linux Server AUS (v. 7.2) perf 3.10.0-327.98.2.el7, kernel 3.10.0-327.98.2.el7, python-perf 3.10.0-327.98.2.el7, kernel-tools 3.10.0-327.98.2.el7, kernel-tools-libs 3.10.0-327.98.2.el7, kernel-abi-whitelists 3.10.0-327.98.2.el7, +1 more
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2021:2734
  • Red Hat Enterprise Linux Server AUS (v. 7.3) perf 3.10.0-514.90.2.el7, kernel 3.10.0-514.90.2.el7, python-perf 3.10.0-514.90.2.el7, kernel-tools 3.10.0-514.90.2.el7, kernel-tools-libs 3.10.0-514.90.2.el7, kernel-abi-whitelists 3.10.0-514.90.2.el7, +1 more
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2021:2733
  • Red Hat Enterprise Linux Server AUS (v. 7.4) perf 3.10.0-693.90.2.el7, kernel 3.10.0-693.90.2.el7, python-perf 3.10.0-693.90.2.el7, kernel-tools 3.10.0-693.90.2.el7, kernel-tools-libs 3.10.0-693.90.2.el7, kernel-abi-whitelists 3.10.0-693.90.2.el7, +1 more
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2021:2732
  • Red Hat Enterprise Linux Server AUS (v. 7.6) perf 3.10.0-957.78.2.el7, kernel 3.10.0-957.78.2.el7, bpftool 3.10.0-957.78.2.el7, python-perf 3.10.0-957.78.2.el7, kernel-tools 3.10.0-957.78.2.el7, kernel-tools-libs 3.10.0-957.78.2.el7, +2 more
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2021:2730
  • Red Hat Enterprise Linux Server E4S (v. 7.4) perf 3.10.0-693.90.2.el7, kernel 3.10.0-693.90.2.el7, python-perf 3.10.0-693.90.2.el7, kernel-tools 3.10.0-693.90.2.el7, kernel-tools-libs 3.10.0-693.90.2.el7, kernel-bootwrapper 3.10.0-693.90.2.el7, +3 more
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2021:2732
  • Red Hat Enterprise Linux Server E4S (v. 7.6) perf 3.10.0-957.78.2.el7, kernel 3.10.0-957.78.2.el7, python-perf 3.10.0-957.78.2.el7, kernel-tools 3.10.0-957.78.2.el7, kpatch-patch-3_10_0-957_58_2 1-4.el7, kpatch-patch-3_10_0-957_61_1 1-4.el7, +12 more
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2021:2730
  • Red Hat Enterprise Linux Server EUS (v. 7.7) perf 3.10.0-1062.52.2.el7, kernel 3.10.0-1062.52.2.el7, bpftool 3.10.0-1062.52.2.el7, python-perf 3.10.0-1062.52.2.el7, kernel-kdump 3.10.0-1062.52.2.el7, kernel-tools 3.10.0-1062.52.2.el7, +19 more
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2021:2728
  • Red Hat Enterprise Linux Server Optional (v. 6 ELS) python-perf 2.6.32-754.41.2.el6, kernel-debuginfo-common-i686 2.6.32-754.41.2.el6, kernel-debuginfo-common-s390x 2.6.32-754.41.2.el6, kernel-debuginfo-common-x86_64 2.6.32-754.41.2.el6
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2021:2735
  • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debuginfo-common-ppc64 3.10.0-1160.36.2.el7, kernel-debuginfo-common-x86_64 3.10.0-1160.36.2.el7, kernel-debuginfo-common-ppc64le 3.10.0-1160.36.2.el7
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2021:2725
  • Red Hat Enterprise Linux Server Optional AUS (v. 7.2) kernel-debuginfo-common-x86_64 3.10.0-327.98.2.el7
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2021:2734
  • Red Hat Enterprise Linux Server Optional AUS (v. 7.3) kernel-debuginfo-common-x86_64 3.10.0-514.90.2.el7
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2021:2733
  • Red Hat Enterprise Linux Server Optional AUS (v. 7.4) kernel-debuginfo-common-x86_64 3.10.0-693.90.2.el7
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2021:2732
  • Red Hat Enterprise Linux Server Optional AUS (v. 7.6) kernel-debuginfo-common-x86_64 3.10.0-957.78.2.el7
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2021:2730
  • Red Hat Enterprise Linux Server Optional E4S (v. 7.4) kernel-debuginfo-common-x86_64 3.10.0-693.90.2.el7, kernel-debuginfo-common-ppc64le 3.10.0-693.90.2.el7
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2021:2732
  • Red Hat Enterprise Linux Server Optional E4S (v. 7.6) kernel-debuginfo-common-x86_64 3.10.0-957.78.2.el7, kernel-debuginfo-common-ppc64le 3.10.0-957.78.2.el7
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2021:2730
  • Red Hat Enterprise Linux Server Optional EUS (v. 7.7) kernel-debuginfo-common-ppc64 3.10.0-1062.52.2.el7, kernel-debuginfo-common-x86_64 3.10.0-1062.52.2.el7, kernel-debuginfo-common-ppc64le 3.10.0-1062.52.2.el7
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2021:2728
  • Red Hat Enterprise Linux Server Optional TUS (v. 7.4) kernel-debuginfo-common-x86_64 3.10.0-693.90.2.el7
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2021:2732
  • Red Hat Enterprise Linux Server Optional TUS (v. 7.6) kernel-debuginfo-common-x86_64 3.10.0-957.78.2.el7
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2021:2730
  • Red Hat Enterprise Linux Server TUS (v. 7.4) perf 3.10.0-693.90.2.el7, kernel 3.10.0-693.90.2.el7, python-perf 3.10.0-693.90.2.el7, kernel-tools 3.10.0-693.90.2.el7, kernel-tools-libs 3.10.0-693.90.2.el7, kernel-abi-whitelists 3.10.0-693.90.2.el7, +1 more
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2021:2732
  • Red Hat Enterprise Linux Server TUS (v. 7.6) perf 3.10.0-957.78.2.el7, kernel 3.10.0-957.78.2.el7, bpftool 3.10.0-957.78.2.el7, python-perf 3.10.0-957.78.2.el7, kernel-tools 3.10.0-957.78.2.el7, kernel-tools-libs 3.10.0-957.78.2.el7, +2 more
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2021:2730

5 more fixed, 5 more not affected in the full advisory

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-24-074-07 updated cvss 7.8

Siemens SIMATIC

  • Siemens SIMATIC RF160B (6GT2003-0FA00) <V2.2
    affected: mitigation “Siemens has released a new version (V2.2) for SIMATIC RF160B and recommends to update to the latest version.” siemens.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

9.81% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • openwall.com https://www.openwall.com/lists/oss-security/2021/07/20/1 referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/163621/Sequoia-A-Deep-Root-In-Linuxs-Filesystem-Layer.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.