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Fencer Vulns
high 8.4

CVE-2024-38384 json

blk-cgroup: fix list corruption from reorder of WRITE ->lqueued

published 2024-06-24 2 y ago modified 2026-08-05 3 mo ago also EUVD-2024-37291

cvss
8.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 14%
public exploits
0
none known

Summary

In the Linux kernel, the following vulnerability has been resolved:

blk-cgroup: fix list corruption from reorder of WRITE ->lqueued

__blkcg_rstat_flush() can be run anytime, especially when blk_cgroup_bio_start is being executed.

If WRITE of `->lqueued` is re-ordered with READ of 'bisc->lnode.next' in the loop of __blkcg_rstat_flush(), `next_bisc` can be assigned with one stat instance being added in blk_cgroup_bio_start(), then the local list in __blkcg_rstat_flush() could be corrupted.

Fix the issue by adding one barrier.

Patch / fix

  • Linux Linux 6.6.33, 6.9.4, 6.10
  • linux linux_kernel 714e59b5456e, 785298ab6b80, d0aac2363549
  • linux Debian 14, Debian 13 6.9.7-1

debian advisories DEBIAN-CVE-2024-38384

  • linux Ubuntu 24.04 LTS 6.8.0-44.44
  • linux-aws Ubuntu 24.04 LTS 6.8.0-1015.16
  • linux-gcp Ubuntu 24.04 LTS 6.8.0-1014.16
  • linux-gke Ubuntu 24.04 LTS 6.8.0-1010.13
  • linux-ibm Ubuntu 24.04 LTS 6.8.0-1012.12
  • linux-azure Ubuntu 24.04 LTS 6.8.0-1014.16
  • linux-raspi Ubuntu 24.04 LTS 6.8.0-1011.12
  • linux-riscv Ubuntu 24.04 LTS 6.8.0-44.44.1

ubuntu advisories UBUNTU-CVE-2024-38384

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

  • kernel RHEL 9.4 EUS 5.14.0-427.47.1.el9_4
  • rv RHEL 9.4 EUS 5.14.0-427.47.1.el9_4
  • perf RHEL 9.4 EUS 5.14.0-427.47.1.el9_4
  • rtla RHEL 9.4 EUS 5.14.0-427.47.1.el9_4
  • bpftool RHEL 9.4 EUS 7.3.0-427.47.1.el9_4
  • libperf RHEL 9.4 EUS 5.14.0-427.47.1.el9_4
  • kernel-rt RHEL 9.4 EUS 5.14.0-427.47.1.el9_4
  • kernel-64k RHEL 9.4 EUS 5.14.0-427.47.1.el9_4

red hat advisories RHSA-2024:10771RHSA-2024:5066RHSA-2024:5067

  • kernel-rt Linux Micro 6.0 6.4.0-9.1
  • kernel-source-rt Linux Micro 6.0 6.4.0-9.1
  • kernel-source Linux Micro 6.0 6.4.0-18.1
  • kernel-default Linux Micro 6.0 6.4.0-18.1
  • kernel-kvmsmall Linux Micro 6.0 6.4.0-18.1
  • kernel-default-base Linux Micro 6.0 6.4.0-17.1.1.51
  • kernel-rt Real Time Module 15 SP6, openSUSE Leap 15.6 6.4.0-150600.10.5.1
  • kernel-syms-rt Real Time Module 15 SP6, openSUSE Leap 15.6 6.4.0-150600.10.5.1

suse advisories SUSE-SU-2025:20028-1SUSE-SU-2025:20008-1SUSE-SU-2024:2973-1SUSE-SU-2024:2896-1SUSE-SU-2024:2571-1

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-2024-38384 updated cvss 4.4

kernel: blk-cgroup: fix list corruption from reorder of WRITE ->lqueued

  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more
    affected: no fix available “Fix deferred”
  • Red Hat Enterprise Linux 9 rv, perf, rtla, kernel, bpftool, libperf, +83 more
    affected: no fix available
  • Red Hat CodeReady Linux Builder EUS (v.9.2) kernel-debuginfo-common-s390x 5.14.0-284.77.1.el9_2, kernel-debuginfo-common-x86_64 5.14.0-284.77.1.el9_2, kernel-debuginfo-common-aarch64 5.14.0-284.77.1.el9_2, kernel-debuginfo-common-ppc64le 5.14.0-284.77.1.el9_2
    fixed: vendor fix RHSA-2024:5066
  • Red Hat CodeReady Linux Builder EUS (v.9.4) libperf 5.14.0-427.47.1.el9_4, kernel-debuginfo-common-s390x 5.14.0-427.47.1.el9_4, kernel-debuginfo-common-x86_64 5.14.0-427.47.1.el9_4, kernel-debuginfo-common-aarch64 5.14.0-427.47.1.el9_4, kernel-debuginfo-common-ppc64le 5.14.0-427.47.1.el9_4
    fixed: vendor fix RHSA-2024:10771
  • Red Hat Enterprise Linux AppStream EUS (v.9.2) perf 5.14.0-284.77.1.el9_2, rtla 5.14.0-284.77.1.el9_2, kernel-devel-matched 5.14.0-284.77.1.el9_2, kernel-64k-devel-matched 5.14.0-284.77.1.el9_2, kernel-debug-devel-matched 5.14.0-284.77.1.el9_2, kernel-debuginfo-common-s390x 5.14.0-284.77.1.el9_2, +5 more
    fixed: vendor fix RHSA-2024:5066
  • Red Hat Enterprise Linux AppStream EUS (v.9.4) rv 5.14.0-427.47.1.el9_4, perf 5.14.0-427.47.1.el9_4, rtla 5.14.0-427.47.1.el9_4, kernel-devel-matched 5.14.0-427.47.1.el9_4, kernel-64k-devel-matched 5.14.0-427.47.1.el9_4, kernel-debug-devel-matched 5.14.0-427.47.1.el9_4, +6 more
    fixed: vendor fix RHSA-2024:10771
  • Red Hat Enterprise Linux BaseOS EUS (v.9.2) bpftool 7.0.0-284.77.1.el9_2, kernel 5.14.0-284.77.1.el9_2, kernel-64k 5.14.0-284.77.1.el9_2, kernel-core 5.14.0-284.77.1.el9_2, kernel-tools 5.14.0-284.77.1.el9_2, python3-perf 5.14.0-284.77.1.el9_2, +28 more
    fixed: vendor fix RHSA-2024:5066
show 6 more
  • Red Hat Enterprise Linux BaseOS EUS (v.9.4) bpftool 7.3.0-427.47.1.el9_4, kernel 5.14.0-427.47.1.el9_4, kernel-64k 5.14.0-427.47.1.el9_4, kernel-core 5.14.0-427.47.1.el9_4, kernel-tools 5.14.0-427.47.1.el9_4, python3-perf 5.14.0-427.47.1.el9_4, +28 more
    fixed: vendor fix RHSA-2024:10771
  • Red Hat Enterprise Linux Real Time EUS (v.9.2) kernel-rt 5.14.0-284.77.1.rt14.362.el9_2, kernel-rt-core 5.14.0-284.77.1.rt14.362.el9_2, kernel-rt-modules 5.14.0-284.77.1.rt14.362.el9_2, kernel-rt-debug-core 5.14.0-284.77.1.rt14.362.el9_2, kernel-rt-modules-core 5.14.0-284.77.1.rt14.362.el9_2, kernel-rt-debug-modules 5.14.0-284.77.1.rt14.362.el9_2, +4 more
    fixed: vendor fix RHSA-2024:5067
  • Red Hat Enterprise Linux Real Time EUS (v.9.4) kernel-rt 5.14.0-427.47.1.el9_4, kernel-rt-core 5.14.0-427.47.1.el9_4, kernel-rt-modules 5.14.0-427.47.1.el9_4, kernel-rt-debug-core 5.14.0-427.47.1.el9_4, kernel-rt-modules-core 5.14.0-427.47.1.el9_4, kernel-rt-debug-modules 5.14.0-427.47.1.el9_4, +4 more
    fixed: vendor fix RHSA-2024:10771
  • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) kernel-rt 5.14.0-284.77.1.rt14.362.el9_2, kernel-rt-kvm 5.14.0-284.77.1.rt14.362.el9_2, kernel-rt-core 5.14.0-284.77.1.rt14.362.el9_2, kernel-rt-modules 5.14.0-284.77.1.rt14.362.el9_2, kernel-rt-debug-kvm 5.14.0-284.77.1.rt14.362.el9_2, kernel-rt-debug-core 5.14.0-284.77.1.rt14.362.el9_2, +6 more
    fixed: vendor fix RHSA-2024:5067
  • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4) kernel-rt 5.14.0-427.47.1.el9_4, kernel-rt-kvm 5.14.0-427.47.1.el9_4, kernel-rt-core 5.14.0-427.47.1.el9_4, kernel-rt-modules 5.14.0-427.47.1.el9_4, kernel-rt-debug-kvm 5.14.0-427.47.1.el9_4, kernel-rt-debug-core 5.14.0-427.47.1.el9_4, +6 more
    fixed: vendor fix RHSA-2024:10771
  • Red Hat Enterprise Linux AppStream EUS (v.9.2) kernel-doc 5.14.0-284.77.1.el9_2
    not affected: vulnerable code not present

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 SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
2 y ago

Exploit prediction

0.23% chance of exploitation in the next 30 days, higher than 14% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CISA ADP 3.1 8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Linux Linux
  • linux linux_kernel

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption
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.