BACnet Stack: `WriteProperty(File_Size)` can bypass read-only protection and expose uninitialized RAMFS tail bytes through `AtomicReadFile`

BACnet Stack is a BACnet open source protocol stack C library for embedded systems. Prior to version 1.5.1, the BACnet FILE object implementation allows remote WriteProperty(PROP_FILE_SIZE) requests to change the size of a stream-access FILE object without checking whether that FILE is marked Read_Only. When the FILE backend is RAMFS, enlarging the file only performs realloc() and updates the stored size; the newly exposed tail region is not initialized before later reads. As a result, a remote client can enlarge a read-only RAMFS-backed stream-access FILE and then immediately retrieve the newly exposed region with AtomicReadFile(stream-access). Depending on the allocator and build configuration, the returned data may contain sanitizer fill bytes, stale heap contents, or other unintended process memory. Shrinking the file through the same path can also remotely truncate content that was intended to be read-only. This issue has been patched in versions 1.5.1 and 1.6.0.

Windows Graphics Kernel Information Disclosure Vulnerability

Use of uninitialized resource in Windows Graphics Kernel allows an authorized attacker to disclose information locally.

chromium-browser: chromium-browser: Uninitialized resource in Media

Uninitialized resource in Media in Google Chrome on on Windows prior to 157.0.8103.78 allowed a remote attacker who had compromised the renderer process to potentially read memory outside the sandbox via a crafted HTML page. (Chromium security severity: High)

Microsoft Office Excel Remote Code Execution Vulnerability

Use of uninitialized resource in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.

chromium-browser: chromium-browser: Uninitialized resource in Skia

Uninitialized resource in Skia in Google Chrome prior to 157.0.8103.78 allowed a remote attacker who had compromised the renderer process to read memory outside the sandbox via a crafted HTML page. (Chromium security severity: High)

chromium-browser: Chromium: Information disclosure via uninitialized resource in Skia

Uninitialized resource in Skia in Google Chrome prior to 157.0.8103.78 allowed a remote attacker who had compromised the renderer process to read memory outside the sandbox via a crafted HTML page. (Chromium security severity: High)

chromium-browser: chromium-browser: information disclosure via crafted HTML page

Uninitialized resource in ANGLE in Google Chrome on on Windows prior to 157.0.8103.78 allowed a remote attacker to read memory outside the sandbox via a crafted HTML page. (Chromium security severity: High)

In multiple functions of attestation_object.c, there is a possible way to disclose uninitialized secure element stack memory in key attestation certificates due to uninitialized data. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.

chromium-browser: chromium-browser: Information disclosure via crafted HTML page

Uninitialized resource in ANGLE in Google Chrome prior to 157.0.8103.78 allowed a remote attacker to read memory outside the sandbox via a crafted HTML page. (Chromium security severity: High)

chromium-browser: chromium-browser: arbitrary code execution outside sandbox via uninitialized variable in Skia

Use of uninitialized variable in Skia in Google Chrome on on Android prior to 157.0.8103.78 allowed a remote attacker who had compromised the renderer process to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)

chromium-browser: chromium-browser: cross-origin information disclosure via crafted HTML page

Uninitialized resource in Skia in Google Chrome prior to 157.0.8103.78 allowed a remote attacker to obtain cross-origin data via a crafted HTML page. (Chromium security severity: High)

Kernel stack information disclosure in the charger_get_prop() system call handler

The user-mode system call verifier z_vrfy_charger_get_prop() in drivers/charger/charger_handlers.c declares an uninitialized union charger_propval k_val on the kernel (privileged) stack, passes it to the charger driver back end via z_impl_charger_get_prop(), and then copies the full sizeof(union charger_propval) back into the calling user thread's buffer with k_usermode_to_copy(). That discloses kernel stack contents on two paths: On error. The copy-out ignores the driver's return code. In-tree back ends return an error without writing through the value pointer for properties they do not implement: charger_gpio_get_prop() returns -ENOTSUP unconditionally, and bq24190_get_prop() has a default: return -ENOTSUP; arm that never touches val. The whole union is then stack residue. On success. A back end writes only the one union member the requested property selects (for example sbs_charger.c writes the one-byte val->present for CHARGER_PROP_PRESENT and returns 0), yet the handler still copies the whole union, so every byte beyond that member is uninitialized. The handler is compiled only when CONFIG_USERSPACE=y and is reachable by any user-mode thread that has been granted access to a charger device object. K_SYSCALL_DRIVER_CHARGER() validates only the device object and its API pointer, not the property identifier, so an unprivileged thread can choose prop freely: an unimplemented property forces the error path, a narrow one the success path, and the call can be repeated at will. Each call discloses up to the size of the union (12 bytes on a 32-bit target, 16 bytes on 64-bit targets where the function-pointer members widen it) of supervisor-stack memory. The bytes are residue of earlier kernel-side frames on the thread's privileged stack and can contain kernel object addresses and saved return addresses, which an unprivileged thread cannot otherwise observe and which help defeat address-layout assumptions when exploiting a separate memory-safety defect. There is no integrity or availability impact. Two commits fix it, and both are needed. 5054384e983c skips the copy-out when the back end reports an error. c31cac727d02 zeroes the union before the driver call, so the bytes copied out on success are driver-written data or zeros. A tree carrying only the first still leaks on every successful call.

chromium-browser: chromium-browser: Uninitialized resource in Skia

Uninitialized resource in Skia in Google Chrome prior to 157.0.8103.78 allowed a remote attacker to obtain cross-origin data via a crafted HTML page. (Chromium security severity: High)

chromium-browser: chromium-browser: Uninitialized resource in GPU

Uninitialized resource in GPU in Google Chrome prior to 157.0.8103.78 allowed a remote attacker who had compromised the renderer process to potentially read memory outside the sandbox via a crafted HTML page. (Chromium security severity: High)

chromium-browser: chromium-browser: Uninitialized resource in Skia

Uninitialized resource in Skia in Google Chrome prior to 157.0.8103.78 allowed a remote attacker who had compromised the renderer process to read memory outside the sandbox via a crafted HTML page. (Chromium security severity: High)

Windows Graphics Kernel Information Disclosure Vulnerability

Use of uninitialized resource in Windows Graphics Kernel allows an authorized attacker to disclose information locally.

Microsoft Windows Codecs Library Information Disclosure Vulnerability

Use of uninitialized resource in Microsoft Windows Codecs Library allows an authorized attacker to disclose information locally.

Windows Kernel Transaction Manager Information Disclosure Vulnerability

Use of uninitialized resource in Kernel Transaction Manager allows an authorized attacker to disclose information locally.

chromium-browser: Uninitialized resource in GPU

Uninitialized resource in GPU in Google Chrome on on Android prior to 157.0.8103.50 allowed a remote attacker who had compromised the renderer process to read memory outside the sandbox via a crafted HTML page. (Chromium security severity: Medium)

chromium-browser: Uninitialized resource in Skia

Uninitialized resource in Skia in Google Chrome prior to 157.0.8103.38 allowed a remote attacker who had compromised the renderer process to read memory outside the sandbox via a crafted HTML page. (Chromium security severity: High)