Linux: Use of Uninitialized Resource
CVE-2024-42225 is a high-severity use of uninitialized resource vulnerability in Linux, with a CVSS 3.1 base score of 7.5 out of 10. It can be exploited from the same local network by an unauthenticated attacker, without any action from a user. The record lists versions dc7f14d00d0c4c21898f3504607f4a31079065a2, 22ea2a7f0b64d323625950414a4496520fb33657, ff6b26be13032c5fbd6b6a0b24358f8eaac4f3af as the first without the flaw, so updating Linux to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.53% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Linux to dc7f14d00d0c4c21898f3504607f4a31079065a2 or 22ea2a7f0b64d323625950414a4496520fb33657 or ff6b26be13032c5fbd6b6a0b24358f8eaac4f3af or 64f86337ccfe77fe3be5a9356b0dabde23fbb074, whichever matches your release line, or a later version.
- Update Linux Kernel to 5.15.163 or 6.1.98 or 6.6.39 or 6.9.9, whichever matches your release line, or a later version.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Linux | Linux | 7bc04215a66b60e198aecaee8418f6d79fa19faa up to, but not including, dc7f14d00d0c4c21898f3504607f4a31079065a2; 7bc04215a66b60e198aecaee8418f6d79fa19faa up to, but not including, 22ea2a7f0b64d323625950414a4496520fb33657; 7bc04215a66b60e198aecaee8418f6d79fa19faa up to, but not including, ff6b26be13032c5fbd6b6a0b24358f8eaac4f3af; 7bc04215a66b60e198aecaee8418f6d79fa19faa up to, but not including, 64f86337ccfe77fe3be5a9356b0dabde23fbb074; 7bc04215a66b60e198aecaee8418f6d79fa19faa up to, but not including, 7f819a2f4fbc510e088b49c79addcf1734503578; 4.16 | dc7f14d00d0c4c21898f3504607f4a31079065a2, 22ea2a7f0b64d323625950414a4496520fb33657, ff6b26be13032c5fbd6b6a0b24358f8eaac4f3af, 64f86337ccfe77fe3be5a9356b0dabde23fbb074, 7f819a2f4fbc510e088b49c79addcf1734503578 |
| Linux | Linux Kernel | before 5.15.163; 5.16 up to, but not including, 6.1.98; 6.2 up to, but not including, 6.6.39; 6.7 up to, but not including, 6.9.9 | 5.15.163, 6.1.98, 6.6.39, 6.9.9 |
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
- AdjacentThe attacker must be on the same local network segment.
- Attack complexity
- HighSuccess depends on conditions outside the attacker's control.
- Privileges required
- NoneNo account or login is needed.
- 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
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 8.3 | High | CNA |
| CVSS 3.1 | 7.5 | High | NVD |
Official description
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: replace skb_put with skb_put_zero Avoid potentially reusing uninitialized data
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
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Patches and release notes
- git.kernel.org/stable/c/22ea2a7f0b64d323625950414a4496520fb33657
- git.kernel.org/stable/c/64f86337ccfe77fe3be5a9356b0dabde23fbb074
- git.kernel.org/stable/c/7f819a2f4fbc510e088b49c79addcf1734503578
- git.kernel.org/stable/c/dc7f14d00d0c4c21898f3504607f4a31079065a2
- git.kernel.org/stable/c/ff6b26be13032c5fbd6b6a0b24358f8eaac4f3af
Other references
Recent Use of Uninitialized Resource vulnerabilities
- 7.0 High severity
- 7.1 High severity
- 7.8 High severity
- 7.8 High severity
- 7.1 High severity
- 7.5 High severity
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