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CVE-2024-46744· NVD / CVE Program· CNA Linux

Squashfs: sanity check symbolic link size

Noroxi assessment

Priority: Monitor (action score 31/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.29% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 087f25b2d36adae19951114ffcbb7106ed405ebb, 1b9451ba6f21478a75288ea3e3fca4be35e2a438, 5c8906de98d0d7ad42ff3edf2cb6cd7e0ea658c4.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 087f25b2d36adae19951114ffcbb7106ed405ebb, 1b9451ba6f21478a75288ea3e3fca4be35e2a438, 5c8906de98d0d7ad42ff3edf2cb6cd7e0ea658c4 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: Squashfs: sanity check symbolic link size Syzkiller reports a "KMSAN: uninit-value in pick_link" bug. This is caused by an uninitialised page, which is ultimately caused by a corrupted symbolic link size read from disk. The reason why the corrupted symlink size causes an uninitialised page is due to the following sequence of events: 1. squashfs_read_inode() is called to read the symbolic link from disk. This assigns the corrupted value 3875536935 to inode->i_size. 2. Later squashfs_symlink_read_folio() is called, which assigns this corrupted value to the length variable, which being a signed int, overflows producing a negative number. 3. The following loop that fills in the page contents checks that the copied bytes is less than length, which being negative means the loop is skipped, producing an uninitialised page. This patch adds a sanity check which checks that the symbolic link size is not larger than expected. -- V2: fix spelling mistake.

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
Sep 18, 2024
Updated
Oct 15, 2026
EPSS
0.2% · 21th percentile

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernelbefore 4.19.322
  • linux linux kernel4.20 and later · before 5.4.284
  • linux linux kernel5.5 and later · before 5.10.226
  • linux linux kernel5.11 and later · before 5.15.167
  • linux linux kernel5.16 and later · before 6.1.110
  • linux linux kernel6.2 and later · before 6.6.51
  • linux linux kernel6.7 and later · before 6.10.10
  • linux linux kernel6.11

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 2.6.29affected
    • 6545b246a2c815a8fcd07d58240effb6ec3481b1 and later · before f82cb7f24032ed023fc67d26ea9bf322d8431a90affected · git
    • 6545b246a2c815a8fcd07d58240effb6ec3481b1 and later · before 1b9451ba6f21478a75288ea3e3fca4be35e2a438affected · git
    • 6545b246a2c815a8fcd07d58240effb6ec3481b1 and later · before 5c8906de98d0d7ad42ff3edf2cb6cd7e0ea658c4affected · git
    • 6545b246a2c815a8fcd07d58240effb6ec3481b1 and later · before 087f25b2d36adae19951114ffcbb7106ed405ebbaffected · git
    • 6545b246a2c815a8fcd07d58240effb6ec3481b1 and later · before fac5e82ab1334fc8ed6ff7183702df634bd1d93daffected · git
    • 6545b246a2c815a8fcd07d58240effb6ec3481b1 and later · before c3af7e460a526007e4bed1ce3623274a1a6afe5eaffected · git
    • 6545b246a2c815a8fcd07d58240effb6ec3481b1 and later · before ef4e249971eb77ec33d74c5c3de1e2576faf6c90affected · git
    • 6545b246a2c815a8fcd07d58240effb6ec3481b1 and later · before 810ee43d9cd245d138a2733d87a24858a23f577daffected · git
    • before 2.6.29not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:9kernelbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64kbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64k-corebefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64k-debugbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64k-debug-corebefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64k-debug-develbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64k-debug-devel-matchedbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64k-debug-modulesbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64k-debug-modules-corebefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64k-debug-modules-extrabefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64k-develbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64k-devel-matchedbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64k-modulesbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64k-modules-corebefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64k-modules-extrabefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-abi-stablelistsbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-corebefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-cross-headersbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-debugbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-debug-corebefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-debug-develbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-debug-devel-matchedbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-debug-modulesbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-debug-modules-corebefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7

+96

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now
  • CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV
    83Now

Published before and after this one in the same product

  • ← EarlierCVE-2024-46730Sep 18, 2024 · drm/amd/display: Ensure array index tg_inst won't be -1
    22Monitor
  • ← EarlierCVE-2024-46743Sep 18, 2024 · of/irq: Prevent device address out-of-bounds read in interrupt map walk
    28Monitor
  • Later →CVE-2024-46745Sep 18, 2024 · Input: uinput - reject requests with unreasonable number of slots
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux087f25b2d36adae19951114ffcbb7106ed405ebbVendor (CNA)
Linux Linux1b9451ba6f21478a75288ea3e3fca4be35e2a438Vendor (CNA)
Linux Linux5c8906de98d0d7ad42ff3edf2cb6cd7e0ea658c4Vendor (CNA)
Linux Linux810ee43d9cd245d138a2733d87a24858a23f577dVendor (CNA)
Linux Linuxc3af7e460a526007e4bed1ce3623274a1a6afe5eVendor (CNA)
Linux Linuxef4e249971eb77ec33d74c5c3de1e2576faf6c90Vendor (CNA)
Linux Linuxf82cb7f24032ed023fc67d26ea9bf322d8431a90Vendor (CNA)
Linux Linuxfac5e82ab1334fc8ed6ff7183702df634bd1d93dVendor (CNA)
almalinux:kernel5.14.0-611.5.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k5.14.0-611.5.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-core5.14.0-611.5.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug5.14.0-611.5.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-core5.14.0-611.5.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel5.14.0-611.5.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel-matched5.14.0-611.5.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules5.14.0-611.5.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-core5.14.0-611.5.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-extra5.14.0-611.5.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-devel5.14.0-611.5.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-devel-matched5.14.0-611.5.1.el9_7 · AlmaLinux:9Package registry (OSV)
debian:linux6.1.112-1 · Debian:12Package registry (OSV)
red hat:kernel-64k-debug-debuginfo0:5.14.0-570.138.1.el9_6 · Red Hat:rhel_eus:9.6::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel0:5.14.0-570.138.1.el9_6 · Red Hat:rhel_eus:9.6::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel-matched0:5.14.0-570.138.1.el9_6 · Red Hat:rhel_eus:9.6::appstreamPackage registry (OSV)
red hat:kernel-64k-debuginfo0:5.14.0-570.138.1.el9_6 · Red Hat:rhel_eus:9.6::appstreamPackage registry (OSV)
red hat:kernel-64k-devel0:5.14.0-570.138.1.el9_6 · Red Hat:rhel_eus:9.6::appstreamPackage registry (OSV)
red hat:kernel-64k-devel-matched0:5.14.0-570.138.1.el9_6 · Red Hat:rhel_eus:9.6::appstreamPackage registry (OSV)
red hat:kernel-debug-debuginfo0:5.14.0-570.138.1.el9_6 · Red Hat:rhel_eus:9.6::appstreamPackage registry (OSV)
red hat:kernel-debug-devel0:5.14.0-570.138.1.el9_6 · Red Hat:rhel_eus:9.6::appstreamPackage registry (OSV)
red hat:kernel-debug-devel-matched0:5.14.0-570.138.1.el9_6 · Red Hat:rhel_eus:9.6::appstreamPackage registry (OSV)

+4

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-59 · Improper Link Resolution Before File Access ('Link Following')

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (11 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records