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CVE-2026-111159— libewf through 20260924 Heap Out-of-Bounds Read via L01 Extended Attribute Parsing

Quick assessment

Affected
libyal libewf
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.

在 libewf（版本截至 20260924）中， 函数存在一个堆越界读取漏洞。该问题是由于在将 UTF-16 编码的名称和值大小乘以 2 之前，先对它们进行了有效性检查所致。攻击者可以通过构造一个包含异常大的扩展属性（ea）元数据计数的 .L01 或 .Lx01 文件，导致应用程序崩溃，或通过扩展属性泄露未初始化的堆内存。

CVSS 6.1 · Medium EPSS 0.13% · P2

Affected Version Matrix 1

VendorProduct Version RangeStatus
libyal libewf ≤ 20260924 affected
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I. Basic Information for CVE-2026-111159

Vulnerability Information
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Vulnerability Title
libewf through 20260924 Heap Out-of-Bounds Read via L01 Extended Attribute Parsing
Source: CVE Program / CVE List V5
Vulnerability Description
libewf through 20260924 contains a heap out-of-bounds read vulnerability in libewf_lef_extended_attribute_read_data() because UTF-16 name and value sizes are validated before being doubled. Attackers can supply a crafted .L01/.Lx01 file with oversized 'ea' metadata counts to crash the application or leak uninitialized heap memory through extended attributes.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
libyal libewf 0 ~ 20260924 -

II. Public POCs for CVE-2026-111159

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III. Intelligence Information for CVE-2026-111159

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Vendor Advisories for CVE-2026-111159 (1)

News Coverage for CVE-2026-111159 (1)

Other References for CVE-2026-111159 (1)

Same Patch Batch · libyal · 2026-10-15 · 6 CVEs total

CVE-2026-111140 6.1 MEDIUM libregf through 20260526 Heap Out-of-Bounds Read via libregf_value_item_read_value_data
CVE-2026-111147 6.1 MEDIUM Libyal libesedb through 20260704 Heap Out-of-Bounds Read via libesedb_record_get_multi_val
CVE-2026-111135 6.1 MEDIUM libfwsi through 20260522 Heap Out-of-Bounds Read via libfwsi_mtp_volume_values_read_data
CVE-2026-111134 6.1 MEDIUM libfwsi through 20260522 Heap Out-of-Bounds Read via libfwsi_mtp_file_entry_values_read_da
CVE-2026-111133 6.1 MEDIUM libfsapfs through 20260921 Heap Out-of-Bounds Read via libfsapfs_key_encrypted_key_read_da

IV. Related Vulnerabilities

Same vendor: libyal
Same weakness: CWE-125

V. Comments for CVE-2026-111159

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