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CVE-2026-70654— libvips: A well-crafted PPM image processed via a custom source could lead to possible heap buffer write overflow

Quick assessment

Affected
libvips libvips
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

libvips 是一款高性能、低内存占用的图像处理库。在 8.18.3 版本之前，如果应用程序定义了特殊的自定义 libvips 数据源，并使用这些源来处理不受信任的未压缩 PPM 图像，可能会在 libvips/iofuncs/source.c 中的 vips_source_read_to_memory 函数中触发最大/最小值计算错误。该函数在选择剩余读取大小时，错误地使用了 VIPS_MAX 而非 VIPS_MIN，导致最多可向已分配的堆缓冲区外写入 4032 字节，从而引发内存损坏或进程崩溃。该问题已在 8.

CVSS 5.8 · Medium EPSS 0.11% · P2

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 1

VendorProduct Version RangeStatus
libvips libvips < 8.18.3 affected
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I. Basic Information for CVE-2026-70654

Vulnerability Information
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Vulnerability Title
libvips: A well-crafted PPM image processed via a custom source could lead to possible heap buffer write overflow
Source: CVE Program / CVE List V5
Vulnerability Description
libvips is a fast image processing library with low memory needs. Prior to version 8.18.3, applications that define unusual custom libvips sources and use them to process untrusted uncompressed PPM images can trigger a max/min error in vips_source_read_to_memory in libvips/iofuncs/source.c. The function uses VIPS_MAX instead of VIPS_MIN when selecting the remaining read size, allowing up to 4032 bytes to be written beyond the allocated heap buffer and causing memory corruption or a process crash. This issue is fixed in version 8.18.3.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
libvips libvips < 8.18.3 -

II. Public POCs for CVE-2026-70654

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III. Intelligence Information for CVE-2026-70654

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Patches & Fixes for CVE-2026-70654 (2)

Vendor Advisories for CVE-2026-70654 (1)

Vendor Pages for CVE-2026-70654 (1)

Same Patch Batch · libvips · 2026-08-20 · 5 CVEs total

CVE-2026-69242 8.4 HIGH libvips: Integer overflow leading to heap buffer overflow leading to possible attacker-con
CVE-2026-70651 6.9 MEDIUM libvips: Possible integer overflow when reading multi-page TIFF images via ImageMagick
CVE-2026-70653 4.8 MEDIUM libvips: Possible heap-based buffer read overflow when decoding a well-crafted RLE Radianc
CVE-2026-70652 2.0 LOW libvips: Possible heap-based buffer read overflow when resizing and re-encoding a JPEG wit

IV. Related Vulnerabilities

Same product: libvips
Same vendor: libvips
Same weakness: CWE-122

V. Comments for CVE-2026-70654

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