how2heap

Educational Heap Exploitation This repo is for learning various heap exploitation techniques. We use Ubuntu's Libc releases as the gold-standard. Each technique is verified to work on corresponding Ubuntu releases. You can run apt source libc6 to download the source code of the Libc you are using...

wasm2c-tableflip

wasm2c 샌드박스 탈출: 게스트 모듈이 호스트에서 셸 명령 실행 블로그 읽기: trustsig.eu/blog wasm2c/wasm-rt-impl-tableops.inc의 wasmrtallocatefuncreftable은 모듈이 선언한 요소 수로 table-size를 설정한 다음 calloc의 결과를 무시합니다. 할당이 실패하면 테이블은 data == NULL인 채로 선언된 전체 size를 유지하므로 모든 경계 검사가 여전히 통과하고 table-datai는 절대 주소 i sizeofwasmrtfuncreft가 됩니다. 요소 ...

EUVD-2026-76923

wasm2c in WebAssembly wabt through 1.0.41 allows sandbox escape in some situations that primarily involve 32-bit platforms, aka a "table flip" attack. It does not check the return value of calloc in wasmrtallocatefuncreftable wasm2c/wasm-rt-impl-tableops.inc. When the funcref table allocation...

DEBIAN-CVE-2026-90648

wasm2c in WebAssembly wabt through 1.0.41 allows sandbox escape in some situations that primarily involve 32-bit platforms, aka a "table flip" attack. It does not check the return value of calloc in wasmrtallocatefuncreftable wasm2c/wasm-rt-impl-tableops.inc. When the funcref table allocation...

CVE-2026-90648

wasm2c in WebAssembly wabt through 1.0.41 allows sandbox escape in some situations that primarily involve 32-bit platforms, aka a "table flip" attack. It does not check the return value of calloc in wasmrtallocatefuncreftable wasm2c/wasm-rt-impl-tableops.inc. When the funcref table allocation...

CVE-2026-90648

wasm2c in WebAssembly wabt through 1.0.41 allows sandbox escape in some situations that primarily involve 32-bit platforms, aka a "table flip" attack. It does not check the return value of calloc in wasmrtallocatefuncreftable wasm2c/wasm-rt-impl-tableops.inc. When the funcref table allocation...

UBUNTU-CVE-2026-90648

wasm2c in WebAssembly wabt through 1.0.41 allows sandbox escape in some situations that primarily involve 32-bit platforms, aka a "table flip" attack. It does not check the return value of calloc in wasmrtallocatefuncreftable wasm2c/wasm-rt-impl-tableops.inc. When the funcref table allocation...

Linux Distros Unpatched Vulnerability : CVE-2026-90648

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - wasm2c in WebAssembly wabt through 1.0.41 allows sandbox escape in some situations that primarily involve 32-bit platforms, aka a table flip attack. It does not...

CVE-2026-90648

wasm2c in WebAssembly wabt through 1.0.41 contains a sandbox escape vulnerability ("table flip"). The root cause is an unchecked return value of calloc() in wasm_rt_allocate_funcref_table(); when allocation fails, table->data remains NULL while table->size retains the guest-declared count, ...

CVE-2026-90648

wasm2c in WebAssembly wabt through 1.0.41 allows sandbox escape in some situations that primarily involve 32-bit platforms, aka a "table flip" attack. It does not check the return value of calloc in wasmrtallocatefuncreftable wasm2c/wasm-rt-impl-tableops.inc. When the funcref table allocation...

CVE-2026-90648

wasm2c in WebAssembly wabt through 1.0.41 allows sandbox escape in some situations that primarily involve 32-bit platforms, aka a "table flip" attack. It does not check the return value of calloc in wasmrtallocatefuncreftable wasm2c/wasm-rt-impl-tableops.inc. When the funcref table allocation...

PT-2026-90728

wasm2c in WebAssembly wabt through 1.0.41 allows sandbox escape in some situations that primarily involve 32-bit platforms, aka a "table flip" attack. It does not check the return value of calloc in wasm rt allocate funcref table wasm2c/wasm-rt-impl-tableops.inc. When the funcref table allocation...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: amdkfd: Using calloc instead of kzalloc to avoid integer overflow. This approach uses calloc instead of performing multiplication operations, which might lead to overflow...

Astra Linux – Vulnerability in klibc

A issue was discovered in klibc before version 2.0.9. Multiplication operations within the calloc function may lead to integer overflows and subsequent heap buffer overflows...

Astra Linux – Vulnerability in libarchive

In libarchive before version 3.6.2, the software does not check for an error after calling the calloc function. This function may return a NULL pointer if it fails, leading to a NULL pointer being dereferenced. NOTE: The discoverer cites this CWE-476 issue, but third parties dispute its impact on...

Medium: gimp

Issue Overview: A flaw was found in the file-sgi plugin in GIMP. When processing an RLE-compressed SGI image, the plugin allocates memory for a row table. The image header dimensions ysize and zsize are read as 16-bit unsigned integers. If a crafted file sets both dimensions to their maximum valu...

CVE-2026-66757

A flaw was found in the file-sgi plugin in GIMP. When processing an RLE-compressed SGI image, the plugin allocates memory for a row table. The image header dimensions ysize and zsize are read as 16-bit unsigned integers. If a crafted file sets both dimensions to their maximum value 65535, the...

CVE-2026-66757 Gimp: signed integer overflow in file-sgi (sgi-lib) causes the plugin to crash on rle sgi images

A flaw was found in the file-sgi plugin in GIMP. When processing an RLE-compressed SGI image, the plugin allocates memory for a row table. The image header dimensions ysize and zsize are read as 16-bit unsigned integers. If a crafted file sets both dimensions to their maximum value 65535, the...

EUVD-2026-49403

A flaw was found in the file-sgi plugin in GIMP. When processing an RLE-compressed SGI image, the plugin allocates memory for a row table. The image header dimensions ysize and zsize are read as 16-bit unsigned integers. If a crafted file sets both dimensions to their maximum value 65535, the...

The vulnerability of the ogs_pool_id_calloc() function in the library /lib/sbi/nghttp2-server.c, which is used for creating and managing NR/LTE Open5GS mobile networks, allows a attacker to cause a service failure.

The vulnerability of the ogspoolidcalloc function in the library /lib/sbi/nghttp2-server.c, which is used for creating and managing mobile networks like NR/LTE Open5GS, is related to improper cleanup or release of resources. Exploiting this vulnerability could allow a malicious actor to cause...