Incident: Android Wallpaper Bug Causes Continuous Screen On/Off Loop on Smartphones

Published Date: 2020-06-03

Postmortem Analysis
Timeline 1. The software failure incident with the Android bug causing smartphones to continuously turn on and off happened in June 2020 as reported in Article 101519.
System 1. Android operating system version 10 [Article 101519]
Responsible Organization 1. The software developers of the Android operating system were responsible for causing the software failure incident by not handling the color space information in images correctly, leading to the bug affecting smartphones [101519].
Impacted Organization 1. Users of smartphones with the Android operating system, including brands like Samsung and Google [101519].
Software Causes 1. The software failure incident was caused by a bug in the Android operating system that occurred when users set a specific high-quality image as their wallpaper, leading to continuous screen on-off cycles on affected smartphones [101519].
Non-software Causes 1. The quality improvement in digital photos, leading phones to check the 'color space' of each image for proper display [101519].
Impacts 1. The software failure incident caused screens of affected smartphones to continuously turn on and off, leading to the phones becoming unusable. Some users had to return their devices to the manufacturer for repairs [101519]. 2. Users were advised not to set the specific photo causing the bug as their wallpaper to avoid their phones from malfunctioning [101519]. 3. The incident prompted Samsung to announce the release of a new upgrade on June 11 to address the issue [101519]. 4. The bug affected smartphones using the Android version 10, the latest at the time, and was reported to have impacted devices from brands like Samsung and Google [101519].
Preventions 1. Implementing thorough testing procedures: Conducting comprehensive testing, including edge cases and unusual scenarios, could have potentially identified the issue with the wallpaper causing the bug [101519]. 2. Proper validation of user inputs: Ensuring that the software properly validates and handles all types of user inputs, including images used as wallpapers, could have prevented this incident [101519]. 3. Regular software updates and patches: Timely software updates and patches could have addressed any underlying vulnerabilities or issues related to how the phones handle color space information in images, potentially preventing the bug from occurring [101519].
Fixes 1. Launching a new upgrade for the Samsung devices on June 11 to address the problem [101519]. 2. Investigating and potentially fixing the way some phones handle color space information in images to prevent similar incidents in the future.
References 1. Users reporting on social media platforms 2. Samsung 3. Google 4. Android Authority journalist Bogdan Petrovan 5. Security experts from the company Pen Test 6. BBC (for contacting Samsung and reporting on the incident) [#101519]

Software Taxonomy of Faults

Category Option Rationale
Recurring one_organization, multiple_organization (a) The software failure incident having happened again at one_organization: - The incident of the bug causing smartphones to continuously turn on and off due to setting a specific image as wallpaper has affected smartphones from multiple brands, including Samsung and Google [101519]. - Samsung mentioned that they would release a new upgrade on June 11 to address the issue [101519]. (b) The software failure incident having happened again at multiple_organization: - The bug affecting smartphones by continuously turning their screens on and off due to setting a specific image as wallpaper has been reported by users of various Android devices, indicating a widespread impact across different brands [101519].
Phase (Design/Operation) design, operation (a) The software failure incident in Article 101519 can be attributed to the design phase. The bug causing smartphones to continuously turn on and off was triggered by setting a specific image as the wallpaper. This issue arose due to how phones handle color space information in images, with some devices unable to process the color information correctly, leading to the malfunction. The developers of the software did not anticipate this scenario, resulting in the phones not functioning properly when encountering such images [101519]. (b) Additionally, the operation phase also played a role in this software failure incident. Users reported experiencing the bug when they set the specific image as their wallpaper, indicating that the operation or user action of changing the wallpaper triggered the issue. The incident highlights how the operation or misuse of the system, in this case, setting a particular image as wallpaper, led to the malfunction in the smartphones [101519].
Boundary (Internal/External) within_system The software failure incident related to the Android bug caused by setting a specific image as wallpaper can be analyzed in terms of the boundary of the failure incident: (a) within_system: The incident can be attributed to factors within the system. The article mentions that the bug occurs due to how some phones handle the color space information in images, causing them to malfunction. The developers of the software did not anticipate this issue, indicating an internal system flaw [101519]. (b) outside_system: The incident can also be seen as influenced by factors outside the system. While the specific trigger was setting a particular image as wallpaper, the root cause lies in how the phones interpret color space information in images, which can be considered an external factor affecting the system's functionality [101519].
Nature (Human/Non-human) non-human_actions (a) The software failure incident in Article 101519 occurred due to non-human actions. The bug was triggered by using a specific photograph as a wallpaper on Android smartphones, causing the screens to continuously turn on and off. This issue was related to how the phones were handling the color space information in the image, which exceeded the devices' capability to process it correctly. The experts from the security company Pen Test mentioned that the phones were unable to handle the color information properly, leading to the malfunction, and the software developers likely did not anticipate this scenario [101519].
Dimension (Hardware/Software) hardware, software (a) The software failure incident reported in Article 101519 is primarily due to hardware-related factors. The bug causing smartphones to continuously turn on and off is triggered by setting a specific image as the wallpaper, which leads to the malfunction of the devices. The issue arises from how the phones handle the color space information in the image, which exceeds the capability of some devices to process correctly. This hardware-related problem results in the phones not functioning properly, as they are unable to handle the color information effectively [101519]. (b) The software failure incident in Article 101519 is also influenced by software-related factors. The bug affecting Android smartphones is a result of how the software processes the color space information in images, leading to the malfunction of the devices when a specific image is set as the wallpaper. The software developers did not anticipate this issue, indicating a software-related oversight in handling color information, which ultimately causes the phones to stop working correctly [101519].
Objective (Malicious/Non-malicious) non-malicious (a) The software failure incident described in Article 101519 is categorized as non-malicious. The incident was caused by a bug related to using a specific image as wallpaper on Android smartphones, leading to screens continuously turning on and off. This bug affected various smartphone brands, including Samsung and Google devices. The issue was not intentional but rather a result of how the phones were handling color space information in images, causing them to malfunction [101519].
Intent (Poor/Accidental Decisions) poor_decisions (a) The software failure incident related to the Android wallpaper bug can be attributed to poor decisions made during the development process. The incident occurred because some phones were unable to handle the color information in the specific image used as a wallpaper, causing the devices to malfunction [101519]. The experts from the security company Pen Test mentioned that the phones were not handling the color space of the image correctly, leading to the devices not functioning properly [101519]. This indicates that the software developers did not anticipate or address this issue during the development phase, resulting in the bug affecting users' devices.
Capability (Incompetence/Accidental) development_incompetence (a) The software failure incident related to development incompetence is evident in the article [101519]. The incident occurred due to a bug in the Android operating system that caused smartphones to continuously turn on and off when a specific image was set as the wallpaper. The experts from the security company Pen Test analyzed the bug and highlighted that the phones were unable to handle the color space information in the image correctly, leading to the malfunction. They mentioned that the developers of the software likely did not anticipate this issue, indicating a lack of consideration for such scenarios during the development process. This lack of foresight and competence in addressing potential issues with color space handling contributed to the software failure incident.
Duration temporary The software failure incident described in Article 101519 can be categorized as a temporary failure. The incident of smartphones continuously turning on and off due to setting a specific image as wallpaper is a temporary issue caused by the specific circumstance of using that particular image. The incident is not a permanent failure as it is triggered by a specific action (setting the image as wallpaper) rather than being a continuous issue regardless of user actions.
Behaviour crash, other (a) crash: The software failure incident described in the article is a crash. Users reported that after setting a specific image as wallpaper, their phones started continuously turning on and off, rendering the devices unusable. Even attempts to restart the phones in safe mode were unsuccessful, indicating a complete failure of the system to function properly [Article 101519]. (b) omission: There is no indication in the article that the software failure incident was due to the system omitting to perform its intended functions at an instance(s). The issue described seems to be more related to a crash rather than omission [Article 101519]. (c) timing: The software failure incident is not related to the system performing its intended functions too late or too early. Instead, the issue caused the phones to continuously turn on and off, indicating a crash rather than a timing-related failure [Article 101519]. (d) value: The software failure incident is not directly related to the system performing its intended functions incorrectly in terms of processing data or commands. The issue described in the article is more about the system crashing when trying to display a specific image as wallpaper, rather than processing the image incorrectly [Article 101519]. (e) byzantine: The software failure incident does not exhibit characteristics of a byzantine failure, which involves inconsistent responses and interactions. The incident described in the article is more about a crash that occurs when the system encounters a specific image as wallpaper, leading to continuous on-off cycles of the phone's display [Article 101519]. (f) other: The behavior of the software failure incident can be categorized as a crash due to the system losing state and not performing any of its intended functions. The crash occurred when users set a particular image as wallpaper, causing the phones to continuously turn on and off, rendering them unusable. This behavior is not typical and was not anticipated by the software developers, leading to a complete failure of the system [Article 101519].

IoT System Layer

Layer Option Rationale
Perception None None
Communication None None
Application None None

Other Details

Category Option Rationale
Consequence property The consequence of the software failure incident described in the article [101519] is primarily related to option (d) property. People's material goods, in this case, their smartphones, were impacted due to the software failure caused by setting a specific image as wallpaper. The bug resulted in the screens of the affected phones continuously turning on and off, rendering the devices unusable. Some users had to return their phones to the manufacturer for repairs, and Samsung announced an upcoming upgrade to address the issue. Additionally, the software failure incident did not lead to any reported deaths, physical harm, impact on basic needs, or significant delays. The primary consequence observed was the disruption of the affected smartphones' functionality due to the bug triggered by the wallpaper image.
Domain information (a) The software failure incident reported in Article 101519 is related to the information industry, specifically the technology sector. The incident involves smartphones with the Android operating system experiencing a bug when setting a particular image as wallpaper, causing the devices to continuously turn on and off [101519]. This bug affects users' ability to access and utilize information on their smartphones, highlighting the impact on the information industry.

Sources

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