CVE-2026-84451— libheif 2026.1 越界读取漏洞
一分钟漏洞结论
影响对象
strukturag libheif
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
libheif is a HEIF and AVIF file format decoder and encoder. From 1.19.0 until 1.23.3, the no-icef full-item branch of unc_decoder::get_compressed_image_data_uncompressed() in libheif/codecs/uncompressed/unc_decoder.cc retains an addition-based range check that
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一、 漏洞 CVE-2026-84451 基础信息
漏洞信息
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Vulnerability Title
libheif: Incomplete fix for CVE-2026-62292 leaves libheif vulnerable to an out-of-bounds read
来源: CVE Program / CVE List V5
Vulnerability Description
libheif is a HEIF and AVIF file format decoder and encoder. From 1.19.0 until 1.23.3, the no-icef full-item branch of unc_decoder::get_compressed_image_data_uncompressed() in libheif/codecs/uncompressed/unc_decoder.cc retains an addition-based range check that can wrap when a crafted uncompressed tile grid produces a large range_start_offset and range_size. The overflow makes the bounds comparison pass and allows heif_image_handle_decode_image_tile() to call memcpy() with an invalid source pointer and a very large length when decoding a valid high-index advertised tile. This incomplete remediation of CVE-2026-62292 can reliably crash tile-processing applications, while whole-image decoding is not claimed to reach the demonstrated path. This issue is fixed in version 1.23.3.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
来源: CVE Program / CVE List V5
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| strukturag | libheif | >= 1.19.0, < 1.23.3 | - |
|
二、漏洞 CVE-2026-84451 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-84451 补丁与修复 (1)
CVE-2026-84451 其他参考 (2)
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Release v1.23.3 - security release · strukturag/libheif · GitHub x_refsource_MISC
同批安全公告 · strukturag · 2026-09-18 · 共 9 条
| CVE-2026-84383 | 9.8 CRITICAL | libheif堆缓冲区溢出漏洞 |
| CVE-2026-84447 | 7.5 HIGH | libheif 间接引用链导致拒绝服务漏洞 |
| CVE-2026-84446 | 7.5 HIGH | libheif 序列解码时序表初始化导致非终止循环 |
| CVE-2026-84384 | 7.5 HIGH | libheif 解压无限制致拒绝服务漏洞 |
| CVE-2026-84444 | 7.4 HIGH | libheif 未压缩瓦片图像编码越界写入漏洞 |
| CVE-2026-84450 | 4.3 MEDIUM | libheif 不完整修复导致断言中止漏洞 |
| CVE-2026-84448 | 4.0 MEDIUM | libheif 堆越界读取漏洞 |
| CVE-2026-84449 | 3.7 LOW | libheif 颜色转换内存访问错误 |
IV. Related Vulnerabilities
V. Comments for CVE-2026-84451
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