CVE-2024-46744

Aliases:UBUNTU-CVE-2024-46744DEBIAN-CVE-2024-46744
Advisory lineage Upstream: 0 Downstream: 37
Modified
Published: 18 Sept 2024, 07:12
Last modified:12 May 2026, 11:57

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.8 HIGH
v3.1 (nvd)
EPSS Score
0.3% LOW
0% probability +0.29%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

18 Sept 2024, 07:12
Published
Vulnerability first disclosed
12 May 2026, 11:57
Last Modified
Vulnerability information updated

Description

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.

CVSS Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.30%• Percentile: 23%

Techniques & Countermeasures

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

    The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

Affected Systems

  • debian•linux

    < 5.10.226-1 | < 6.1.112-1 | < 6.10.11-1 | < 6.10.11-1

  • debian•linux-6.1

    < 6.1.119-1~deb11u1

  • ubuntu•linux

    all | < 5.4.0-200.220 | < 5.15.0-125.135 | < 6.8.0-50.51

  • ubuntu•linux-allwinner-5.19

    all

  • ubuntu•linux-aws

    all | < 5.4.0-1135.145 | < 5.15.0-1072.78 | < 6.8.0-1020.22

  • ubuntu•linux-aws-5.0

    all

  • ubuntu•linux-aws-5.11

    all

  • ubuntu•linux-aws-5.13

    all

  • ubuntu•linux-aws-5.15

    < 5.15.0-1072.78~20.04.1

  • ubuntu•linux-aws-5.19

    all

  • ubuntu•linux-aws-5.3

    all

  • ubuntu•linux-aws-5.4

    < 5.4.0-1135.145~18.04.1

  • ubuntu•linux-aws-5.8

    all

  • ubuntu•linux-aws-6.2

    all

  • ubuntu•linux-aws-6.5

    all

  • ubuntu•linux-aws-6.8

    < 6.8.0-1020.22~22.04.1

  • ubuntu•linux-aws-fips

    all | < 5.4.0-1135.145+fips1 | < 5.15.0-1072.78+fips1

  • ubuntu•linux-aws-hwe

    all

  • ubuntu•linux-azure

    all | all | < 5.4.0-1140.147 | < 5.15.0-1075.84 | < 6.8.0-1020.23

  • ubuntu•linux-azure-4.15

    all

  • ubuntu•linux-azure-5.11

    all

  • ubuntu•linux-azure-5.13

    all

  • ubuntu•linux-azure-5.15

    < 5.15.0-1078.87~20.04.1

  • ubuntu•linux-azure-5.19

    all

  • ubuntu•linux-azure-5.3

    all

  • ubuntu•linux-azure-5.4

    < 5.4.0-1140.147~18.04.1

  • ubuntu•linux-azure-5.8

    all

  • ubuntu•linux-azure-6.2

    all

  • ubuntu•linux-azure-6.5

    all

  • ubuntu•linux-azure-6.8

    < 6.8.0-1020.23~22.04.1

  • ubuntu•linux-azure-edge

    all

  • ubuntu•linux-azure-fde

    all | all

  • ubuntu•linux-azure-fde-5.19

    all

  • ubuntu•linux-azure-fde-6.2

    all

  • ubuntu•linux-azure-fips

    all | < 5.4.0-1140.147+fips1 | < 5.15.0-1075.84+fips1

  • ubuntu•linux-bluefield

    all | < 5.4.0-1095.102 | < 5.15.0-1056.58

  • ubuntu•linux-fips

    all | < 5.4.0-1109.119 | < 5.15.0-125.135+fips1 | < 6.8.0-78.78+fips1

  • ubuntu•linux-gcp

    all | all | < 5.4.0-1139.148 | < 5.15.0-1071.79 | < 6.8.0-1019.21

  • ubuntu•linux-gcp-4.15

    all

  • ubuntu•linux-gcp-5.11

    all

  • ubuntu•linux-gcp-5.13

    all

  • ubuntu•linux-gcp-5.15

    < 5.15.0-1071.79~20.04.1

  • ubuntu•linux-gcp-5.19

    all

  • ubuntu•linux-gcp-5.3

    all

  • ubuntu•linux-gcp-5.4

    < 5.4.0-1139.148~18.04.1

  • ubuntu•linux-gcp-5.8

    all

  • ubuntu•linux-gcp-6.2

    all

  • ubuntu•linux-gcp-6.5

    all

  • ubuntu•linux-gcp-6.8

    < 6.8.0-1019.21~22.04.1

  • ubuntu•linux-gcp-fips

    all | < 5.4.0-1139.148+fips1 | < 5.15.0-1071.79+fips1

Showing first 50 affected entries in server-rendered view.

References (32)