Weakness (CWE)
CWE-190: Integer Overflow or Wraparound
The product performs a calculation that can
produce an integer overflow or wraparound when the logic
assumes that the resulting value will always be larger than
the original value. This occurs when an integer value is
incremented to a value that is too large to store in the
associated representation. When this occurs, the value may
become a very small or negative number.
How to prevent it (7 mitigations)
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Requirements
Ensure that all protocols are strictly defined, such that all out-of-bounds behavior can be identified simply, and require strict conformance to the protocol.
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Requirements
Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
If possible, choose a language or compiler that performs automatic bounds checking.
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Architecture and Design
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid [REF-1482].
Use libraries or frameworks that make it easier to handle numbers without unexpected consequences.
Examples include safe integer handling packages such as SafeInt (C++) or IntegerLib (C or C++). [REF-106]
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Implementation
Perform input validation on any numeric input by ensuring that it is within the expected range. Enforce that the input meets both the minimum and maximum requirements for the expected range.
Use unsigned integers where possible. This makes it easier to perform validation for integer overflows. When signed integers are required, ensure that the range check includes minimum values as well as maximum values.
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Implementation
Understand the programming language's underlying representation and how it interacts with numeric calculation (CWE-681). Pay close attention to byte size discrepancies, precision, signed/unsigned distinctions, truncation, conversion and casting between types, "not-a-number" calculations, and how the language handles numbers that are too large or too small for its underlying representation. [REF-7]
Also be careful to account for 32-bit, 64-bit, and other potential differences that may affect the numeric representation.
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Architecture and Design
For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.
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Implementation
Examine compiler warnings closely and eliminate problems with potential security implications, such as signed / unsigned mismatch in memory operations, or use of uninitialized variables. Even if the weakness is rarely exploitable, a single failure may lead to the compromise of the entire system.
Source: MITRE CWE-190
2,078 results · Feed
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High 8.8
Integer overflow in V8 in Google Chrome prior to 151.0.7922.109 allowed a remote attacker to execute arbitrary code ins…
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Low 3.1
Integer overflow in GPU in Google Chrome prior to 151.0.7922.109 allowed a remote attacker who had compromised the rend…
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High 8.1
llama.cpp b4882–b9058 Buffer Overflow in KV Cache State Restore
llama.cpp builds b4882 through b9058 contain a heap buffer overflow vulnerability in the KV cache state restore path where the state_read_data() function computes write size without overflow checking, allowing attackers with write access to the slot_save_path…
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High 7.8
llama.cpp b1283–b9058 Integer Overflow in llama_batch_init() Function
llama.cpp builds b1283 through b9058 contain an integer overflow vulnerability in the llama_batch_init() function where unchecked multiplications in malloc() calls can wrap past INT32_MAX when computing allocation sizes. Attackers can pass specially crafted p…
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High 7.8
llama.cpp b1886–b7445 Integer Overflow via new_1batch() in llama-android.cpp
llama.cpp builds b1886 through b7445 contain an integer overflow vulnerability in the LLaMA-Android JNI wrapper where the new_1batch() function multiplies sizeof(llama_seq_id) by an attacker-controlled n_seq_max parameter without overflow validation, causing …
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High 8.8
smb/client: Fix error code in smb2_aead_req_alloc()
In the Linux kernel, the following vulnerability has been resolved: smb/client: Fix error code in smb2_aead_req_alloc() The "*num_sgs" variable is a u32 so "ERR_PTR(*num_sgs)" doesn't work. We would have to do something similar to the previous line where it's…
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Medium 6.8
HDF5 integer underflow in Fletcher32 filter leads to massive out-of-bounds read
H5Z__filter_fletcher32 in H5Zfletcher32.c in HDF5 prior to 2.3.0 computes the data length to checksum by subtracting the 4-byte trailing checksum size from the input buffer size without checking that the buffer is at least 4 bytes, allowing a size_t underflow…
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Medium 5.5
Rpm: heap buffer overflow in ndb slot table parsing
A flaw was found in the RPM Package Manager (RPM). A local user could be affected by a heap buffer overflow vulnerability when processing a specially crafted NDB database file. This issue arises from an error in how RPM handles certain calculations during fil…
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High 7.8
dr_wav.h W64 CUE Chunk Metadata Parsing Integer Overflow Leading to Heap Buffer Overflow on 32-bit Builds
dr_libs dr_wav.h (all versions through current master) contains an integer overflow in W64 CUE chunk metadata parsing. In drwav__metadata_process_chunk, a stage-1 capacity estimate truncates the 64-bit W64 chunk sizeInBytes to size_t before dividing by DRWAV_…
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High 7.5
OpenSIPS: SIP Message Smuggling via TCP Content-Length Integer Overflow
OpenSIPS is a Session Initiation Protocol (SIP) server implementation. In versions prior to 3.6.6 and 4.0.0-rc1, the TCP message framing layer parses the Content-Length header using unsigned int arithmetic with no overflow check. When an attacker sends a Cont…
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High 7.8
Integer Overflow or Wraparound in Data Network Stack & Connectivity
Memory corruption while processing a packet with a size close to the maximum allowed value.
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High 8.8
o6 Automation open62541 Integer Overflow or Wraparound
An integer overflow in the UA_Variant arrayDimensions product computation in open62541 may allow a remote attacker to trigger an out-of-bounds write.
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High 7.5
o6 Automation open62541 Integer Overflow or Wraparound
An integer overflow in the UA_Variant arrayDimensions product computation in open62541 may allow a remote attacker to read out-of-bounds heap memory, potentially disclosing sensitive information.
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High 7.5
Pcp: pcp: denial of service due to signed integer overflow
A signed integer overflow in the PCP __pmGetPDU() function can be exploited via crafted network packets during PDU processing or SASL negotiation. This permanently blinds the affected daemon, resulting in a total denial of service (DoS) for subsequent packet …
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Critical 9.6
Integer overflow in WebGL in Google Chrome on Android prior to 151.0.7922.72 allowed a remote attacker to potentially p…
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Critical 9.6
Integer overflow in ANGLE in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to potentially perform a sa…
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High 8.8
Integer overflow in libxml in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to execute arbitrary code …
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Critical 9.6
Integer overflow in ANGLE in Google Chrome prior to 151.0.7922.72 allowed a remote attacker who had compromised the ren…
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Critical 9.6
Integer overflow in QUIC in Google Chrome prior to 151.0.7922.72 allowed a remote attacker who had compromised the rend…
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Medium 5.1
ImageMagick: Integer Overflow in JNX decoder causes heap buffer over-write when processing extremly large files on 32-bit builds
ImageMagick is free and open-source software used for editing and manipulating digital images. In versions prior to both 6.9.13-52 and 7.1.2-27, processing an extremely large JNX file on 32-bit platforms can cause an integer overflow, leading to a heap buffer…
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Medium 4.7
ImageMagick: Heap Buffer Over-Write in morphology operation when an invalid kernel is provided
ImageMagick is free and open-source software used for editing and manipulating digital images. In versions prior to 6.9.13-51 and 7.0.1-0 and above prior to 7.1.2-26, an invalid kernel can cause a heap buffer over-write when performing a morphology operation …
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High 8.8
pgvector buffer overflow via integer wraparound in IVFFlat index build on 32-bit systems
Integer wraparound in IVFFlat index build in pgvector before 0.8.6 allows a database user to write data out-of-bounds, which could lead to arbitrary code execution. Only 32-bit systems are affected.
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Medium 5.9
Apache Traffic Server: Integer-handling errors in HPACK/XPACK decoding corrupt memory
Apache Traffic Server mishandles integers while decoding HPACK/XPACK headers, corrupting memory. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3. Users are recommended to upgrade to ve…
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High 7.8
An integer overflow was addressed with improved input validation. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10…
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High 8.8
An integer overflow was addressed with improved input validation. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10…
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Critical 9.8
An integer overflow was addressed with improved input validation. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10…
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High 8.6
An integer overflow was addressed with improved input validation. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10…
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High 7.8
An integer overflow was addressed with improved input validation. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10…
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Critical 9.8
An integer overflow was addressed with improved input validation. This issue is fixed in macOS Sequoia 15.7.8, macOS So…
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Critical 9.8
An integer overflow was addressed with improved input validation. This issue is fixed in macOS Sequoia 15.7.8, macOS So…
-
Critical 9.8
An integer overflow was addressed with improved input validation. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10…
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High 7.8
An integer overflow was addressed with improved input validation. This issue is fixed in iOS 26.6 and iPadOS 26.6, macO…
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High 8.4
bpf, sockmap: reject overflowing copy + len in bpf_msg_push_data()
In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: reject overflowing copy + len in bpf_msg_push_data() When the scatterlist ring is full or nearly full, bpf_msg_push_data() enters a copy fallback path and computes copy + len fo…
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Medium 5.5
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 dimensio…
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High 7.8
Gimp: integer overflow in file-fits plugin causes a heap-based buffer overflow on crafted fits images
A flaw was found in the file-fits plugin in GIMP. When processing a FITS image file, the plugin calculates memory allocation sizes using signed 32-bit integers for width and height. If a crafted file sets both values to large values, their product exceeds 2^3…
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High 8.7
Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift: integer overflow in TProtocol::checkReadBytesAvailable()
Integer Overflow or Wraparound vulnerability in Apache Thrift C++, c_glib, Go, netstd, Delphi and Haxe bindings. This issue affects Apache Thrift: before 0.24.0. Users are recommended to upgrade to version 0.24.0, which fixes the issue.
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Medium 5.1
Integer Overflow Leading to Heap Buffer Overflow in cJSON
cJSON library is vulnerable to an integer overflow in the print_string_ptr() function in cJSON.c on 32-bit platforms. The escape_characters counter, a 32-bit size_t, can wrap around when processing strings containing approximately 858,993,460 or more control …
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High 7.8CVE-2026-64531 Public exploit
net: openvswitch: reject oversized nested action attrs
In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: reject oversized nested action attrs Open vSwitch stores generated flow actions as nlattrs, whose nla_len field is u16. Commit a1e64addf3ff ("net: openvswitch: remove misbeh…
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High 8.8
net/mlx5e: Fix eswitch mode block underflow on IPsec acquire SA
In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Fix eswitch mode block underflow on IPsec acquire SA mlx5e_xfrm_add_state() handles acquire-flow temporary SAs by allocating software state and skipping hardware offload setup. Tha…
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High 7.1
net: ipv4: bound TCP reordering sysctl writes and MTU probe sizes
In the Linux kernel, the following vulnerability has been resolved: net: ipv4: bound TCP reordering sysctl writes and MTU probe sizes Reject invalid `net.ipv4.tcp_reordering` values before they reach TCP socket state. The sysctl is stored as an `int` but copi…