CVE-2024-57907: iio: adc: rockchip_saradc: fix information leak in triggered buffer
In the Linux kernel, the following vulnerability has been resolved:
iio: adc: rockchip_saradc: fix information leak in triggered buffer
The 'data' local struct is used to push data to user space from a
triggered buffer, but it does not set values for inactive channels, as
it only uses iio_for_each_active_channel() to assign new values.
Initialize the struct to zero before using it to avoid pushing
uninitialized information to userspace.
Security readout for executives and security teams
Plain-English summary
CVE-2024-57907 is a Linux kernel information leak in the Rockchip SARADC sensor driver. A local low-privileged user may receive uninitialized kernel data through a triggered buffer. This mainly matters for Linux systems using affected Rockchip hardware or kernels with this driver enabled.
Executive priority
Treat as high priority for Rockchip-based Linux products, embedded fleets, and multi-user systems. It is less urgent for infrastructure without the affected driver. Patch through normal kernel or firmware update channels after confirming vendor coverage.
Technical view
The rockchip_saradc IIO ADC driver copied a local data structure to userspace after filling only active channels. Inactive fields could remain uninitialized. The kernel fix zero-initializes the structure before use. The CVE is CWE-908 with CVSS 3.1 score 7.1, requiring local low-privileged access.
Likely exposure
Exposure is most likely on Linux-based Rockchip embedded, appliance, IoT, or ARM systems using the rockchip_saradc IIO driver. General Linux servers without this driver or hardware are less likely exposed. Exact exposure depends on kernel version, driver configuration, and vendor backports.
Exploitation context
The provided sources do not show active exploitation, and KEV status is false. The attack is local, low complexity, requires low privileges, and no user interaction. Sources support an information leak to userspace, not remote code execution.
Researcher notes
Evidence supports an uninitialized memory exposure from the IIO triggered buffer path. The affected-version data in the bundle is limited and includes stable release markers rather than full distro matrices. Validate through kernel source, vendor backport notes, and distribution package changelogs.
Mitigation direction
Update to a vendor kernel containing the referenced stable fixes.
Apply relevant distribution kernel security updates, including Debian LTS updates where applicable.
Check embedded vendor firmware advisories for Rockchip-based devices.
Disable unused Rockchip SARADC/IIO access where operationally safe.
Prioritize systems allowing untrusted local users or container workloads.
Validation and detection
Inventory kernels and identify Rockchip-based systems or enabled rockchip_saradc driver builds.
Confirm whether vendor kernel packages include the referenced stable commits.
Review distribution advisories for patched kernel package versions.
Check device access policies for IIO triggered buffers and local user exposure.
Document unaffected systems where hardware or driver is absent.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Potential ATT&CK relevance
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
cwe · low confidence lookup
CWE-908: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
CWE-908 · source CWE mapping
Use of Uninitialized Resource
Use of Uninitialized Resource represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.