Linux: Uncontrolled Resource Consumption
CVE-2022-48716 is a high-severity uncontrolled resource consumption vulnerability in Linux, with a CVSS 3.1 base score of 7.8 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 aa7152f9f117b3e66b3c0d4158ca4c6d46ab229f, 9167f2712dc8c24964840a4d1e2ebf130e846b95, c5c1546a654f613e291a7c5d6f3660fc1eb6d0c7 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 0.46% 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 aa7152f9f117b3e66b3c0d4158ca4c6d46ab229f or 9167f2712dc8c24964840a4d1e2ebf130e846b95 or c5c1546a654f613e291a7c5d6f3660fc1eb6d0c7, whichever matches your release line, or a later version.
- Update linux_kernel to aa7152f9f117 or 9167f2712dc8 or c5c1546a654f, whichever matches your release line, or a later version.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Linux | Linux | e8ba1e05bdc016700c85fad559a812c2e795442f up to, but not including, aa7152f9f117b3e66b3c0d4158ca4c6d46ab229f; e8ba1e05bdc016700c85fad559a812c2e795442f up to, but not including, 9167f2712dc8c24964840a4d1e2ebf130e846b95; e8ba1e05bdc016700c85fad559a812c2e795442f up to, but not including, c5c1546a654f613e291a7c5d6f3660fc1eb6d0c7; 5.14 | aa7152f9f117b3e66b3c0d4158ca4c6d46ab229f, 9167f2712dc8c24964840a4d1e2ebf130e846b95, c5c1546a654f613e291a7c5d6f3660fc1eb6d0c7 |
| Linux | linux_kernel | e8ba1e05bdc0 up to, but not including, aa7152f9f117; e8ba1e05bdc0 up to, but not including, 9167f2712dc8; e8ba1e05bdc0 up to, but not including, c5c1546a654f; 5.14 | aa7152f9f117, 9167f2712dc8, c5c1546a654f |
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
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by CNA.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.8 | High | CNA |
| CVSS 3.1 | 9.8 | Critical | CISA (ADP) |
Official description
In the Linux kernel, the following vulnerability has been resolved: ASoC: codecs: wcd938x: fix incorrect used of portid Mixer controls have the channel id in mixer->reg, which is not same as port id. port id should be derived from chan_info array. So fix this. Without this, its possible that we could corrupt struct wcd938x_sdw_priv by accessing port_map array out of range with channel id instead of port id.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Uncontrolled Resource Consumption
The product does not properly control the allocation and maintenance of a limited resource.
How developers prevent this class of flaw
- Ensure that protocols have specific limits of scale placed on them.
- Ensure that all failures in resource allocation place the system into a safe posture.
More Uncontrolled Resource Consumption vulnerabilities (CWE-400)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Patches and release notes
Recent Uncontrolled Resource Consumption vulnerabilities
- 7.5 High severity
- 8.2 High severity
- 9.8 Critical severity
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
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