CVE-2026-5673— Libtheora: libtheora: denial of service or information disclosure via malformed avi file processing
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I. Basic Information for CVE-2026-5673
Vulnerability Information
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Vulnerability Title
Libtheora: libtheora: denial of service or information disclosure via malformed avi file processing
Source: NVD (National Vulnerability Database)
Vulnerability Description
A flaw was found in libtheora. This heap-based out-of-bounds read vulnerability exists within the AVI (Audio Video Interleave) parser, specifically in the avi_parse_input_file() function. A local attacker could exploit this by tricking a user into opening a specially crafted AVI file containing a truncated header sub-chunk. This could lead to a denial-of-service (application crash) or potentially leak sensitive information from the heap.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨界内存读
Source: NVD (National Vulnerability Database)
Vulnerability Title
Theora 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Theora是Xiph开源的一个 Theora 视频压缩格式的参考实现。 Theora存在缓冲区错误漏洞，该漏洞源于AVI解析器中avi_parse_input_file函数存在堆越界读取，可能导致拒绝服务或堆敏感信息泄露。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | - | cpe:/o:redhat:enterprise_linux:10 | |
| Red Hat | Red Hat Enterprise Linux 6 | - | cpe:/o:redhat:enterprise_linux:6 | |
| Red Hat | Red Hat Enterprise Linux 7 | - | cpe:/o:redhat:enterprise_linux:7 | |
| Red Hat | Red Hat Enterprise Linux 8 | - | cpe:/o:redhat:enterprise_linux:8 | |
| Red Hat | Red Hat Enterprise Linux 9 | - | cpe:/o:redhat:enterprise_linux:9 |
II. Public POCs for CVE-2026-5673
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|---|
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Same Patch Batch · Red Hat · 2026-04-06 · 3 CVEs total
| CVE-2026-5704 | 5.0 MEDIUM | Tar: tar: hidden file injection via crafted archives |
| CVE-2026-37977 | 3.7 LOW | Keycloak: org.keycloak.protocol.oidc.grants.ciba: keycloak: information disclosure via cor |
IV. Related Vulnerabilities
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Xorg: xwayland: x.org x server: information disclosure or de - CVE-2026-34000
Xwayland: xorg: x.org x server: information disclosure and d
Same vendor: Red Hat
- CVE-2026-42011
Gnutls: gnutls: security bypass due to incorrect name constr - CVE-2026-42010
Gnutls: gnutls: authentication bypass via nul character in u - CVE-2026-6420
Keylime: keylime: security bypass due to hardcoded tpm quote - CVE-2026-34956
Openvswitch: open vswitch: denial of service via malformed f - CVE-2026-34002
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Same weakness: CWE-125
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V. Comments for CVE-2026-5673
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