wasm2c-tableflip

wasm2c sandbox escape: guest module runs a shell command on the host Read the blog: trustsig.eu/blog wasmrtallocatefuncreftable in wasm2c/wasm-rt-impl-tableops.inc sets table-size from the module's declared element count and then ignores the result of calloc. When the allocation fails the table i...

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...

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, which might lead to overflow...

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, resulting in a NULL pointer being dereferenced. NOTE: The developer mentions this as a CWE-476 issue, but third parties dispute its...

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...

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 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 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: Unchecked Return Value

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

Name of the Vulnerable Software and Affected Versions WebAssembly wabt versions prior to 1.0.42 Description An issue in wasm2c allows a sandbox escape, primarily on 32-bit platforms, through a method known as a table flip attack. The wasm rt allocate funcref table function in...

Unity Linux 20.1050e / 20.1060e / 20.1070-8ae / 20.1070e Security Update: p11-kit (UTSA-2026-032284)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-032284 advisory. An issue was discovered in p11-kit 0.21.1 through 0.23.21. Multiple integer overflows have been discovered in the array allocations in the p11-kit library and the...

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...