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A critical integer overflow vulnerability was discovered and patched in the GIF decoder library `libnsgif`, where multiplying width, height, and pixel byte values from untrusted GIF headers could silently overflow, causing heap buffer corruption during image processing. This class of vulnerability is particularly dangerous because it originates from attacker-controlled input and can lead to arbitrary code execution or process crashes. The fix introduces explicit overflow checks before any memory
A critical heap buffer overflow vulnerability was discovered and patched in `src/neural_web.c`, where an unbounded `strcpy()` call allowed attacker-controlled input to overflow a fixed-size buffer in the context cache structure. Left unpatched, this flaw could have enabled arbitrary code execution or denial of service by crafting malicious input vectors passed to the `categorizeInput` function. The fix introduces proper bounds checking, closing a confirmed-exploitable attack surface in productio
A high-severity heap buffer overflow vulnerability was discovered and patched in `uri.c`, where a libcurl write callback copied received data into a fixed-size buffer without verifying the total size wouldn't exceed its allocated capacity. Because the affected code runs against attacker-controlled remote endpoints, a malicious server could send oversized responses to corrupt heap memory and potentially execute arbitrary code. The fix introduces a proper buffer-length check before the `memcpy` ca
A critical integer overflow vulnerability in `uri.c` allowed attackers to craft malicious URI strings that caused an undersized heap allocation followed by an out-of-bounds `memcpy`, leading to heap corruption. The fix adds mandatory bounds validation before any memory allocation, ensuring the `len + 1` calculation cannot silently wrap around to zero. Left unpatched, this vulnerability could enable remote code execution through carefully crafted URI inputs.
A critical out-of-bounds heap read vulnerability was discovered in the Effekseer GLTF resource loader, where a `memcpy` operation copied data from a buffer without first verifying the source contained enough bytes. An attacker could craft a malicious GLTF file with truncated buffer data to crash the application or leak sensitive heap memory contents. The fix adds a simple but essential bounds check before the copy operation, ensuring the source buffer always contains at least as many bytes as th
A critical buffer overflow vulnerability was discovered in the Vorbis producer module (`src/modules/vorbis/producer_vorbis.c`), where an unchecked `sprintf()` call allowed attacker-controlled metadata from Vorbis audio files to overflow a fixed-size buffer. The fix replaces `sprintf()` with `snprintf()` and adds explicit bounds checking, ensuring that no metadata key — no matter how long or maliciously crafted — can corrupt adjacent memory. This class of vulnerability is one of the oldest and mo
CVE-2026-41676 is a high-severity vulnerability discovered in the rust-openssl crate, which provides OpenSSL bindings for Rust applications. Left unpatched, this flaw could expose backend services to cryptographic or memory-safety attacks through the underlying OpenSSL layer. The fix involved upgrading the rust-openssl dependency from version 0.10.75 to 0.10.78 in the project's Cargo.toml and Cargo.lock files.
A critical stack buffer overflow vulnerability was discovered and patched in `binding/shared/console.c`, where an unchecked `strcat()` call concatenating file path components into a fixed-size stack buffer could allow attackers to overwrite the return address and achieve arbitrary code execution. This class of vulnerability — CWE-120, also known as a "Classic Buffer Overflow" — is one of the oldest and most dangerous bugs in systems programming, and its presence in a shared binding layer makes i
A critical out-of-bounds memory vulnerability was discovered and patched in `utils/symbol-rawelf.c`, where two separate `memcpy` calls lacked proper bounds validation when processing ELF binary files. Without these checks, a maliciously crafted ELF file could trigger an out-of-bounds read or heap overflow, potentially leading to remote code execution or memory corruption. This post breaks down how the vulnerability works, how it was fixed, and what every C developer should know about safe memory
A critical memory safety vulnerability was discovered and fixed in the Linux kernel's SSDFS filesystem driver, where directly assigning the return value of krealloc() to the original pointer could cause use-after-free conditions or NULL pointer dereferences when memory allocation fails. This well-known dangerous pattern, explicitly warned against in Linux kernel coding guidelines, could allow attackers to trigger memory corruption under low-memory conditions. The fix implements the safe temporar
A critical buffer overflow vulnerability was discovered and patched in hooker.c, where a memcpy call at line 1228 copied instruction bytes into a fixed-size bridge buffer without validating the copy length. An attacker or crafted binary could exploit this to corrupt memory, crash the process, or potentially achieve arbitrary code execution. The fix adds a simple but essential bounds check before the copy operation, enforcing the invariant that save_bytes never exceeds the allocated bridge buffer
A medium-severity vulnerability in `src/ddma.c` allowed a malicious guest OS to program DMA controllers with unconstrained transfer sizes and addresses, potentially enabling guest-to-host memory access in an emulated environment. The fix introduces strict bounds validation to ensure all DMA transfers stay within allocated memory regions, closing a dangerous path to host memory disclosure and corruption.