CyberSecBulletin
CVE-2024-50302Exploited in the wildNVD status: Analyzed

Linux Kernel Use of Uninitialized Resource

Published Updated By the CyberSecBulletin desk

CVE-2024-50302 is a medium-severity use of uninitialized resource vulnerability in Linux, with a CVSS 3.1 base score of 5.5 out of 10. It can be exploited with local access to the system by an attacker with a low-privileged account, without any action from a user. The record lists versions e7ea60184e1e88a3c9e437b3265cbb6439aa7e26, 3f9e88f2672c4635960570ee9741778d4135ecf5, d7dc68d82ab3fcfc3f65322465da3d7031d4ab46 as the first without the flaw, so updating Linux to one of those releases or later removes the exposure. CISA added it to the Known Exploited Vulnerabilities catalogue on March 4, 2025, which means attacks have been observed in the wild.

Patch now

Attackers are already exploiting this vulnerability, according to CISA.

What to do

  1. Update Linux to e7ea60184e1e88a3c9e437b3265cbb6439aa7e26 or 3f9e88f2672c4635960570ee9741778d4135ecf5 or d7dc68d82ab3fcfc3f65322465da3d7031d4ab46 or 05ade5d4337867929e7ef664e7ac8e0c734f1aaf, whichever matches your release line, or a later version.
  2. Update SIMATIC S7-1500 TM MFP - GNU/Linux subsystem to V1.1.1 or a later version.
  3. Update Sinec OS to 3.2 or a later version.
  4. CISA's required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Affected products and versions

VendorProductAffected versionsFixed in
LinuxLinux27ce405039bfe6d3f4143415c638f56a3df77dca up to, but not including, e7ea60184e1e88a3c9e437b3265cbb6439aa7e26; 27ce405039bfe6d3f4143415c638f56a3df77dca up to, but not including, 3f9e88f2672c4635960570ee9741778d4135ecf5; 27ce405039bfe6d3f4143415c638f56a3df77dca up to, but not including, d7dc68d82ab3fcfc3f65322465da3d7031d4ab46; 27ce405039bfe6d3f4143415c638f56a3df77dca up to, but not including, 05ade5d4337867929e7ef664e7ac8e0c734f1aaf; 27ce405039bfe6d3f4143415c638f56a3df77dca up to, but not including, 1884ab3d22536a5c14b17c78c2ce76d1734e8b0b; 27ce405039bfe6d3f4143415c638f56a3df77dca up to, but not including, 9d9f5c75c0c7f31766ec27d90f7a6ac673193191; 27ce405039bfe6d3f4143415c638f56a3df77dca up to, but not including, 492015e6249fbcd42138b49de3c588d826dd9648; 27ce405039bfe6d3f4143415c638f56a3df77dca up to, but not including, 177f25d1292c7e16e1199b39c85480f7f8815552; and 5 more rangese7ea60184e1e88a3c9e437b3265cbb6439aa7e26, 3f9e88f2672c4635960570ee9741778d4135ecf5, d7dc68d82ab3fcfc3f65322465da3d7031d4ab46, 05ade5d4337867929e7ef664e7ac8e0c734f1aaf, 1884ab3d22536a5c14b17c78c2ce76d1734e8b0b, 9d9f5c75c0c7f31766ec27d90f7a6ac673193191
SiemensSIMATIC S7-1500 TM MFP - GNU/Linux subsystembefore V1.1.1V1.1.1
GoogleAndroidNot specified in the recordNot stated
DebianDebian Linux11.0Not stated
SiemensSimatic S7-1500 Tm Mfp FirmwareNot specified in the recordNot stated
SiemensSinec OSbefore 3.23.2
LinuxLinux Kernel3.12 up to, but not including, 4.19.324; 4.20 up to, but not including, 5.4.286; 5.5 up to, but not including, 5.10.230; 5.11 up to, but not including, 5.15.172; 5.16 up to, but not including, 6.1.117; 6.2 up to, but not including, 6.6.61; 6.7 up to, but not including, 6.11.8; 6.124.19.324, 5.4.286, 5.10.230, 5.15.172, 6.1.117, 6.6.61

Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
LocalThe attacker needs local access or must trick a user into running something.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
LowA basic user account is enough.
User interaction
NoneNo action by a victim is required.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
HighAll data handled by the component can be read.
Integrity
NoneNothing can be modified.
Availability
NoneAvailability is not affected.

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N. Scored by NVD.

Scoring systemScoreSeverityScored by
CVSS 3.15.5MediumNVD
CVSS 3.15.5MediumCISA (ADP)

Official description

In the Linux kernel, the following vulnerability has been resolved: HID: core: zero-initialize the report buffer Since the report buffer is used by all kinds of drivers in various ways, let's zero-initialize it during allocation to make sure that it can't be ever used to leak kernel memory via specially-crafted report.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Use of Uninitialized Resource

The product uses or accesses a resource that has not been initialized.

How developers prevent this class of flaw

  • Explicitly initialize the resource before use. If this is performed through an API function or standard procedure, follow all required steps.
  • Pay close attention to complex conditionals that affect initialization, since some branches might not perform the initialization.
  • Avoid race conditions (CWE-362) during initialization routines.

More Use of Uninitialized Resource vulnerabilities (CWE-908)

Timeline

  1. CVE record published.
  2. Added to CISA's Known Exploited Vulnerabilities catalogue.
  3. CISA published its SSVC assessment (exploitation: active, automatable: no, technical impact: partial).
  4. Deadline for US federal agencies to remediate, set by CISA.
  5. Record last changed materially (score, affected products, status or references).

References

Recent Use of Uninitialized Resource vulnerabilities

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