Multiple Dmabuf Kernel Address UAF Vulnerability (CVE-2023-28577)
Published Sources: OSV, CVE.org
What is affected, what to do
In the function call related to CAM_REQ_MGR_RELEASE_BUF there is no check if the buffer is being used. So when a function called cam_mem_get_cpu_buf to get the kernel va to use, another thread can call CAM_REQ_MGR_RELEASE_BUF to unmap the kernel va which cause UAF of the kernel address.
Update :unknown: to version SoCVersion:2024-08-05.
- Affected
- Qualcomm Snapdragon
eq FastConnect 6800..FastConnect 6800 - Qualcomm Snapdragon
eq FastConnect 6900..FastConnect 6900 - Qualcomm Snapdragon
eq FastConnect 7800..FastConnect 7800 - Qualcomm Snapdragon
eq QCA6391..QCA6391 - Qualcomm Snapdragon
eq QCA6426..QCA6426 - Qualcomm Snapdragon
eq QCA6436..QCA6436 - Qualcomm Snapdragon
eq QCN9074..QCN9074 - Qualcomm Snapdragon
eq QCS410..QCS410 - Qualcomm Snapdragon
eq QCS610..QCS610 - Qualcomm Snapdragon
eq SD865 5G..SD865 5G - Qualcomm Snapdragon
eq Snapdragon 8 Gen 1 Mobile Platform..Snapdragon 8 Gen 1 Mobile Platform - Qualcomm Snapdragon
eq Snapdragon 865 5G Mobile Platform..Snapdragon 865 5G Mobile Platform - Qualcomm Snapdragon
eq Snapdragon 865+ 5G Mobile Platform (SM8250-AB)..Snapdragon 865+ 5G Mobile Platform (SM8250-AB) - Qualcomm Snapdragon
eq Snapdragon 870 5G Mobile Platform (SM8250-AC)..Snapdragon 870 5G Mobile Platform (SM8250-AC) - Qualcomm Snapdragon
eq Snapdragon X55 5G Modem-RF System..Snapdragon X55 5G Modem-RF System - Qualcomm Snapdragon
eq Snapdragon XR2 5G Platform..Snapdragon XR2 5G Platform - Qualcomm Snapdragon
eq SW5100..SW5100 - Qualcomm Snapdragon
eq SW5100P..SW5100P - Qualcomm Snapdragon
eq SXR2130..SXR2130 - Qualcomm Snapdragon
eq WCD9341..WCD9341 - Qualcomm Snapdragon
eq WCD9370..WCD9370 - Qualcomm Snapdragon
eq WCD9380..WCD9380 - Qualcomm Snapdragon
eq WCN3660B..WCN3660B - Qualcomm Snapdragon
eq WCN3680B..WCN3680B - Qualcomm Snapdragon
eq WCN3950..WCN3950 - Qualcomm Snapdragon
eq WCN3980..WCN3980 - Qualcomm Snapdragon
eq WCN3988..WCN3988 - Qualcomm Snapdragon
eq WSA8810..WSA8810 - Qualcomm Snapdragon
eq WSA8815..WSA8815 - Qualcomm Snapdragon
eq WSA8830..WSA8830 - Qualcomm Snapdragon
eq WSA8835..WSA8835
- Qualcomm Snapdragon
Not sure whether and how you are affected? Ask a question about this vulnerability
Metrics
7.8
Priority
XIEM Effective CVSS: highest available CVSS rating from NVD and vendor data.
Source: NVD, CVSS v3
6.7
CVSS v3
Severity Medium on the scale from 0 to 10.
Source: OSV, CVE.org
0.1 %
EPSS score
Low — model estimates < 1% exploitation likelihood.
Source: FIRST EPSS, percentile 2.0
Show all metrics
- Severity
- High
Priority (0–325)
The priority score is a consolidated metric that condenses several individual signals into a single, action-guiding ranking: technical severity (CVSS), exploitation likelihood (EPSS), known-exploited status (KEV) and the context of the affected asset. The aim is to answer the only truly important question in vulnerability management: what first?
Read in glossary- 36.68 Methodology
Exploit maturity
An exploit is code or a technique that specifically uses a concrete vulnerability to force unintended behaviour — such as executing code or escalating privileges. It is the tool that turns a theoretical flaw into a practical attack.
Read in glossary- no public PoC known
XIEM Effective CVSS
XIEM® is the tiered managed-security operating model from NEOSEC and a registered trademark of NEOSEC GmbH. It extends classic SIEM — the central collection, normalisation and correlation of security-relevant events — with endpoint forensics, network visibility and deception technology, and consolidates them into three building tiers: Sentry, Orchestrate and Command.
Read in glossary- 7.8 Methodology
CVSS v3
CVSS is the globally established, open standard for assessing the technical severity of a vulnerability on a scale from 0 to 10. It describes how easily a flaw can be exploited and what damage it can cause — but not how likely its actual exploitation is. CVSS and the complementary EPSS deliberately answer different questions.
Read in glossary- 6.7
EPSS score
The EPSS score is the absolute model output for an individual vulnerability: the estimated probability of real-world exploitation within the next 30 days, expressed as a value between 0 and 1 (i.e. 0 % to 100 %). A score of 0.42 means „the model estimates a 42 % chance of real-world exploitation within 30 days“.
Read in glossary- 0.1 %
- Low — model estimates < 1% exploitation likelihood.
EPSS percentile
The EPSS percentile is the relative position of a vulnerability within all EPSS-scored CVEs, expressed as a value between 0 and 1. A percentile of 0.90 means „this CVE has a higher EPSS score than 90 % of all other scored CVEs“. Unlike the EPSS score, it is not a probability — but a positioning within a ranking.
Read in glossary- 2.0
- Low — this CVE sits in the lower 10% of all CVEs scored today.
KEV status
The KEV catalogue is a list maintained by the US authority CISA of vulnerabilities for which active exploitation in the wild has been confirmed. It answers not the question „how severe?“ but „is it already being attacked?“ — thereby sharply prioritising patching.
Read in glossary- —
- Published
- CISA assessment (SSVC)
- Exploitation: none known · not automatable · Technical impact: total
- Source: CISA Vulnrichment, as of 11 July 2024
CWE
CWE is a catalogue of typical weakness types in software and hardware — such as flawed input validation, unsafe memory handling or poor authentication. Where a CVE names a concrete vulnerability in a concrete product, a CWE describes the underlying class of defect.
Read in glossary- CWE-416
Detection rules
No NEOSEC detection rule is available for this vulnerability yet.
Classification under NIS2 and CRA
Rule-based classification from exploitation status and severity. It does not replace a case-by-case assessment.
NIS2
NIS2 is EU Directive (EU) 2022/2555 to raise the level of cybersecurity across the Union. It substantially broadens obligations compared with the first NIS directive: more sectors, mandatory risk management, staged reporting duties and personal accountability of senior management.
Read in glossary- High technical severity: assess and remediate the vulnerability in vulnerability handling under Art. 21(2)(e) NIS2 and document the decision.
CRA
The CRA is EU Regulation (EU) 2024/2847 setting horizontal cybersecurity requirements for „products with digital elements“ — from industrial controllers and software to connected consumer devices. For the first time manufacturers must ensure security across the entire product lifecycle, handle vulnerabilities and provide security updates.
Read in glossary- From 11.12.2027, Annex I Part II CRA requires manufacturers of affected products with digital elements to handle vulnerabilities without delay and provide security updates.
ISO/IEC 27001
ISO/IEC 27001 is the internationally leading standard for an information security management system (ISMS). It describes a risk-based, process-oriented framework to systematically plan, implement, review and improve information security.
Read in glossary- Control A.8.8, management of technical vulnerabilities: assess relevance to your systems, plan remediation and keep evidence.
Description
In the function call related to CAM_REQ_MGR_RELEASE_BUF there is no check if the buffer is being used. So when a function called cam_mem_get_cpu_buf to get the kernel va to use, another thread can call CAM_REQ_MGR_RELEASE_BUF to unmap the kernel va which cause UAF of the kernel address.
Source: OSV (Open Source Vulnerabilities), NVD (NIST), cvelistv5
Affected products
The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.
| Affected versions | Fixed in | ||
|---|---|---|---|
| Qualcomm, Inc. | Snapdragon |
|
|
| android | :unknown: |
|
|
Vendors and products
- Android
- Qualcomm Fastconnect 6800 Firmware
- Qualcomm Fastconnect 6900 Firmware
- Qualcomm Fastconnect 7800 Firmware
- Qualcomm Qca6391 Firmware
- Qualcomm Qca6426 Firmware
- Qualcomm Qca6436 Firmware
- Qualcomm Qcn9074 Firmware
- Qualcomm Qcs410 Firmware
- Qualcomm Qcs610 Firmware
- Qualcomm Sd865 5g Firmware
- Qualcomm Snapdragon 865 5g Firmware
Affected operating systems
| Other | qualcomm | fastconnect_6800_firmware | — |
| Other | qualcomm | fastconnect_6900_firmware | — |
| Other | qualcomm | fastconnect_7800_firmware | — |
| Other | qualcomm | qca6391_firmware | — |
| Other | qualcomm | qca6426_firmware | — |
| Other | qualcomm | qca6436_firmware | — |
| Other | qualcomm | qcn9074_firmware | — |
| Other | qualcomm | qcs410_firmware | — |
| Other | qualcomm | qcs610_firmware | — |
| Other | qualcomm | sd865_5g_firmware | — |
| Other | qualcomm | snapdragon_865\+_5g_firmware | — |
| Other | qualcomm | snapdragon_865_5g_firmware | — |
| Other | qualcomm | snapdragon_870_5g_firmware | — |
| Other | qualcomm | snapdragon_8_gen_1_firmware | — |
| Other | qualcomm | snapdragon_x55_5g_firmware | — |
| Other | qualcomm | snapdragon_xr2_5g_firmware | — |
| Other | qualcomm | sw5100_firmware | — |
| Other | qualcomm | sw5100p_firmware | — |
| Other | qualcomm | sxr2130_firmware | — |
| Other | qualcomm | wcd9341_firmware | — |
| Other | qualcomm | wcd9370_firmware | — |
| Other | qualcomm | wcd9380_firmware | — |
| Other | qualcomm | wcn3660b_firmware | — |
| Other | qualcomm | wcn3680b_firmware | — |
Weakness classes (CWE)
CWE-416Use After Free
Variant
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
Entry at MITRE CWE-416
References & sources
- source.android.comsecurity/bulletin/2024-08-01advisory
- qualcomm.comcompany/product-security/bulletins/august-2023-bulletinPatch, Vendor advisory
Embed badge
Show the severity and KEV status of this vulnerability on your site – with a link back here. The image is updated hourly.
<a href="https://intel.neosec.eu/en/cve/CVE-2023-28577"><img src="https://intel.neosec.eu/badge/cve/CVE-2023-28577.svg?lang=en" alt="CVE-2023-28577 – NEOSEC Intel" height="20"></a>