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Fencer Vulns
high 7.1

CVE-2024-26982 json

Squashfs: check the inode number is not the invalid value of zero

published 2024-05-01 2 y ago modified 2026-10-15 25 d ago also EUVD-2024-24244

cvss
7.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 20%
public exploits
0
none known

Summary

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

Squashfs: check the inode number is not the invalid value of zero

Syskiller has produced an out of bounds access in fill_meta_index().

That out of bounds access is ultimately caused because the inode has an inode number with the invalid value of zero, which was not checked.

The reason this causes the out of bounds access is due to following sequence of events:

1. Fill_meta_index() is called to allocate (via empty_meta_index()) and fill a metadata index. It however suffers a data read error and aborts, invalidating the newly returned empty metadata index. It does this by setting the inode number of the index to zero, which means unused (zero is not a valid inode number).

2. When fill_meta_index() is subsequently called again on another read operation, locate_meta_index() returns the previous index because it matches the inode number of 0. Because this index has been returned it is expected to have been filled, and because it hasn't been, an out of bounds access is performed.

This patch adds a sanity check which checks that the inode number is not zero when the inode is created and returns -EINVAL if it is.

[phillip@squashfs.org.uk: whitespace fix]

Patch / fix

  • Linux Linux 5.4.291, 5.10.235, 5.15.179, 6.1.130, 6.6.30, 6.8.8, 6.9
  • linux Debian 12 6.1.133-1
  • linux Debian 14, Debian 13 6.8.9-1

debian advisories DEBIAN-CVE-2024-26982

  • linux Ubuntu 20.04 LTS 5.4.0-216.236
  • linux Ubuntu 22.04 LTS 5.15.0-140.150
  • linux Ubuntu 24.04 LTS 6.8.0-38.38
  • linux-aws Ubuntu 20.04 LTS 5.4.0-1146.156
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1084.91
  • linux-aws Ubuntu 24.04 LTS 6.8.0-1011.12
  • linux-gcp Ubuntu 20.04 LTS 5.4.0-1149.158
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1083.92

ubuntu advisories UBUNTU-CVE-2024-26982

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 5.14.0-427.28.1.el9_4
  • rv RHEL 9 5.14.0-427.28.1.el9_4
  • perf RHEL 9 5.14.0-427.28.1.el9_4
  • rtla RHEL 9 5.14.0-427.28.1.el9_4
  • bpftool RHEL 9 7.3.0-427.28.1.el9_4
  • libperf RHEL 9 5.14.0-427.28.1.el9_4
  • kernel-rt RHEL 9 5.14.0-427.28.1.el9_4
  • kernel-64k RHEL 9 5.14.0-427.28.1.el9_4

red hat advisories RHSA-2024:4823RHSA-2024:4831RHSA-2024:5255RHSA-2024:4928RHSA-2024:4211RHSA-2024:6297

  • 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-2025:02846-1SUSE-SU-2025:20028-1SUSE-SU-2025:20008-1SUSE-SU-2024:2973-1SUSE-SU-2024:2203-1SUSE-SU-2024:2135-1

  • kernel AlmaLinux 9 5.14.0-427.28.1.el9_4
  • rv AlmaLinux 9 5.14.0-427.28.1.el9_4
  • perf AlmaLinux 9 5.14.0-427.28.1.el9_4
  • rtla AlmaLinux 9 5.14.0-427.28.1.el9_4
  • bpftool AlmaLinux 9 7.3.0-427.28.1.el9_4
  • libperf AlmaLinux 9 5.14.0-427.28.1.el9_4
  • kernel-rt AlmaLinux 9 5.14.0-427.28.1.el9_4
  • kernel-64k AlmaLinux 9 5.14.0-427.28.1.el9_4

almalinux advisories ALSA-2024:4928ALSA-2024:4352ALSA-2024:4211

  • kernel Rocky Linux 9 5.14.0-427.28.1.el9_4.cloud.1.0
  • kernel Rocky Linux 9 5.14.0-427.28.1.el9_4
  • kernel-rt Rocky Linux 8 4.18.0-553.8.1.rt7.349.el8_10
  • kernel Rocky Linux 8 4.18.0-553.8.1.el8_10

rocky linux advisories RXSA-2024:4928RLSA-2024:4928RLSA-2024:4352RLSA-2024:4211

  • kernel CBL-Mariner 2.0 5.15.179.1-1

azure linux advisories AZL-57731

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

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-2024-26982 updated cvss 5.5

kernel: Squashfs: check the inode number is not the invalid value of zero

  • 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: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 9 kernel-rt, kernel-rt-kvm, kernel-rt-core, kernel-rt-modules, kernel-rt-debug-kvm, kernel-rt-debug-core, +12 more
    affected: workaround, no fix available
  • Red Hat CodeReady Linux Builder EUS (v.8.8) kernel-debuginfo-common-x86_64 4.18.0-477.67.1.el8_8, kernel-debuginfo-common-aarch64 4.18.0-477.67.1.el8_8, kernel-debuginfo-common-ppc64le 4.18.0-477.67.1.el8_8
    fixed: vendor fix RHSA-2024:5255
  • Red Hat CodeReady Linux Builder EUS (v.9.2) kernel-debuginfo-common-s390x 5.14.0-284.75.1.el9_2, kernel-debuginfo-common-x86_64 5.14.0-284.75.1.el9_2, kernel-debuginfo-common-aarch64 5.14.0-284.75.1.el9_2, kernel-debuginfo-common-ppc64le 5.14.0-284.75.1.el9_2
    fixed: vendor fix RHSA-2024:4823
  • Red Hat Enterprise Linux AppStream (v. 9) rv 5.14.0-427.28.1.el9_4, perf 5.14.0-427.28.1.el9_4, rtla 5.14.0-427.28.1.el9_4, kernel-devel-matched 5.14.0-427.28.1.el9_4, kernel-64k-devel-matched 5.14.0-427.28.1.el9_4, kernel-debug-devel-matched 5.14.0-427.28.1.el9_4, +6 more
    fixed: vendor fix RHSA-2024:4928
  • Red Hat Enterprise Linux AppStream EUS (v.9.2) perf 5.14.0-284.75.1.el9_2, rtla 5.14.0-284.75.1.el9_2, kernel-devel-matched 5.14.0-284.75.1.el9_2, kernel-64k-devel-matched 5.14.0-284.75.1.el9_2, kernel-debug-devel-matched 5.14.0-284.75.1.el9_2, kernel-debuginfo-common-s390x 5.14.0-284.75.1.el9_2, +5 more
    fixed: vendor fix RHSA-2024:4823
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-553.8.1.el8_10, kernel 4.18.0-553.8.1.el8_10, bpftool 4.18.0-553.8.1.el8_10, kernel-core 4.18.0-553.8.1.el8_10, kernel-tools 4.18.0-553.8.1.el8_10, python3-perf 4.18.0-553.8.1.el8_10, +15 more
    fixed: vendor fix RHSA-2024:4211
  • Red Hat Enterprise Linux BaseOS (v. 9) bpftool 7.3.0-427.28.1.el9_4, kernel 5.14.0-427.28.1.el9_4, kernel-64k 5.14.0-427.28.1.el9_4, kernel-core 5.14.0-427.28.1.el9_4, kernel-tools 5.14.0-427.28.1.el9_4, python3-perf 5.14.0-427.28.1.el9_4, +28 more
    fixed: vendor fix RHSA-2024:4928
show 12 more
  • Red Hat Enterprise Linux BaseOS AUS (v.8.6) perf 4.18.0-372.121.1.el8_6, kernel 4.18.0-372.121.1.el8_6, bpftool 4.18.0-372.121.1.el8_6, kernel-core 4.18.0-372.121.1.el8_6, kernel-tools 4.18.0-372.121.1.el8_6, python3-perf 4.18.0-372.121.1.el8_6, +8 more Red Hat Enterprise Linux BaseOS E4S (v.8.6) perf 4.18.0-372.121.1.el8_6, kernel 4.18.0-372.121.1.el8_6, bpftool 4.18.0-372.121.1.el8_6, kernel-core 4.18.0-372.121.1.el8_6, kernel-tools 4.18.0-372.121.1.el8_6, python3-perf 4.18.0-372.121.1.el8_6, +15 more
    fixed: vendor fix RHSA-2024:6297
  • Red Hat Enterprise Linux BaseOS EUS (v.8.8) perf 4.18.0-477.67.1.el8_8, kernel 4.18.0-477.67.1.el8_8, bpftool 4.18.0-477.67.1.el8_8, kernel-core 4.18.0-477.67.1.el8_8, kernel-tools 4.18.0-477.67.1.el8_8, python3-perf 4.18.0-477.67.1.el8_8, +15 more
    fixed: vendor fix RHSA-2024:5255
  • Red Hat Enterprise Linux BaseOS EUS (v.9.2) bpftool 7.0.0-284.75.1.el9_2, kernel 5.14.0-284.75.1.el9_2, kernel-64k 5.14.0-284.75.1.el9_2, kernel-core 5.14.0-284.75.1.el9_2, kernel-tools 5.14.0-284.75.1.el9_2, python3-perf 5.14.0-284.75.1.el9_2, +28 more
    fixed: vendor fix RHSA-2024:4823
  • Red Hat Enterprise Linux BaseOS TUS (v.8.6) perf 4.18.0-372.121.1.el8_6, kernel 4.18.0-372.121.1.el8_6, bpftool 4.18.0-372.121.1.el8_6, kernel-core 4.18.0-372.121.1.el8_6, kernel-tools 4.18.0-372.121.1.el8_6, python3-perf 4.18.0-372.121.1.el8_6, +8 more
    fixed: vendor fix RHSA-2024:6297
  • Red Hat Enterprise Linux CRB (v. 8) kernel-debuginfo-common-x86_64 4.18.0-553.8.1.el8_10, kernel-debuginfo-common-aarch64 4.18.0-553.8.1.el8_10, kernel-debuginfo-common-ppc64le 4.18.0-553.8.1.el8_10
    fixed: vendor fix RHSA-2024:4211
  • Red Hat Enterprise Linux CRB (v. 9) libperf 5.14.0-427.28.1.el9_4, kernel-debuginfo-common-s390x 5.14.0-427.28.1.el9_4, kernel-debuginfo-common-x86_64 5.14.0-427.28.1.el9_4, kernel-debuginfo-common-aarch64 5.14.0-427.28.1.el9_4, kernel-debuginfo-common-ppc64le 5.14.0-427.28.1.el9_4
    fixed: vendor fix RHSA-2024:4928
  • Red Hat Enterprise Linux NFV (v. 8) kernel-rt 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-kvm 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-core 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-modules 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-debug-kvm 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-debug-core 4.18.0-553.8.1.rt7.349.el8_10, +4 more
    fixed: vendor fix RHSA-2024:4352
  • Red Hat Enterprise Linux NFV (v. 9) kernel-rt 5.14.0-427.28.1.el9_4, kernel-rt-kvm 5.14.0-427.28.1.el9_4, kernel-rt-core 5.14.0-427.28.1.el9_4, kernel-rt-modules 5.14.0-427.28.1.el9_4, kernel-rt-debug-kvm 5.14.0-427.28.1.el9_4, kernel-rt-debug-core 5.14.0-427.28.1.el9_4, +6 more
    fixed: vendor fix RHSA-2024:4928
  • Red Hat Enterprise Linux Real Time EUS (v.9.2) kernel-rt 5.14.0-284.75.1.rt14.360.el9_2, kernel-rt-core 5.14.0-284.75.1.rt14.360.el9_2, kernel-rt-modules 5.14.0-284.75.1.rt14.360.el9_2, kernel-rt-debug-core 5.14.0-284.75.1.rt14.360.el9_2, kernel-rt-modules-core 5.14.0-284.75.1.rt14.360.el9_2, kernel-rt-debug-modules 5.14.0-284.75.1.rt14.360.el9_2, +4 more Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) kernel-rt 5.14.0-284.75.1.rt14.360.el9_2, kernel-rt-kvm 5.14.0-284.75.1.rt14.360.el9_2, kernel-rt-core 5.14.0-284.75.1.rt14.360.el9_2, kernel-rt-modules 5.14.0-284.75.1.rt14.360.el9_2, kernel-rt-debug-kvm 5.14.0-284.75.1.rt14.360.el9_2, kernel-rt-debug-core 5.14.0-284.75.1.rt14.360.el9_2, +6 more
    fixed: vendor fix RHSA-2024:4831
  • Red Hat Enterprise Linux RT (v. 8) kernel-rt 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-core 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-modules 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-debug-core 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-debug-modules 4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-modules-extra 4.18.0-553.8.1.rt7.349.el8_10, +2 more
    fixed: vendor fix RHSA-2024:4352
  • Red Hat Enterprise Linux RT (v. 9) kernel-rt 5.14.0-427.28.1.el9_4, kernel-rt-core 5.14.0-427.28.1.el9_4, kernel-rt-modules 5.14.0-427.28.1.el9_4, kernel-rt-debug-core 5.14.0-427.28.1.el9_4, kernel-rt-modules-core 5.14.0-427.28.1.el9_4, kernel-rt-debug-modules 5.14.0-427.28.1.el9_4, +4 more
    fixed: vendor fix RHSA-2024:4928
  • Red Hat Enterprise Linux AppStream EUS (v.9.2) kernel-doc 5.14.0-284.75.1.el9_2 Red Hat Enterprise Linux BaseOS (v. 8) kernel-headers 4.18.0-553.8.1.el8_10, kernel-cross-headers 4.18.0-553.8.1.el8_10 Red Hat Enterprise Linux BaseOS AUS (v.8.6) kernel-doc 4.18.0-372.121.1.el8_6 Red Hat Enterprise Linux BaseOS E4S (v.8.6) kernel-doc 4.18.0-372.121.1.el8_6 Red Hat Enterprise Linux BaseOS EUS (v.8.8) kernel-headers 4.18.0-477.67.1.el8_8, kernel-cross-headers 4.18.0-477.67.1.el8_8 Red Hat Enterprise Linux BaseOS TUS (v.8.6) kernel-doc 4.18.0-372.121.1.el8_6
    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 ICSA-26-295-16 updated cvss 7.1

Siemens SIMATIC S7-1500 TM MFP

  • Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
    affected: mitigation, no fix available

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

cisa ICSA-24-102-01 updated cvss 7.1

Siemens SIMATIC S7-1500 TM MFP

  • Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
    affected: mitigation, no fix available

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

cisa ICSA-25-072-03 updated cvss 7.1

Siemens SIMATIC S7-1500 TM MFP

  • Siemens SIMATIC S7-1500 TM MFP - BIOS
    affected: workaround, no fix available

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.28% chance of exploitation in the next 30 days, higher than 20% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Affected products

  • Linux Linux
  • Siemens SIMATIC S7-1500 TM MFP - BIOS
  • Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem

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.