CyberRota Analysis
AI-GeneratedGNU Emacs for Android is susceptible to an integer overflow in the sfnt_read_name_table() function, which can lead to a heap buffer overflow due to improper allocation size calculations for TrueType font files. This vulnerability allows attackers to exploit the flaw by delivering malicious font files through various channels, potentially leading to heap memory corruption and arbitrary code execution. Android developers and users of Emacs should prioritize this issue to mitigate risks associated with malicious font exploitation.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
Note: these links are listed for security research and verification purposes only.
Original NVD Description
GNU Emacs for Android is vulnerable to an integer overflow in sfnt_read_name_table() in src/sfnt.c. The function computes an allocation size using a 32-bit length value from a TrueType font file without overflow checking. On 32-bit targets, a crafted font causes the calculation to wrap, resulting in an undersized heap allocation. A subsequent read() call writes beyond the buffer, causing a heap buffer overflow. An attacker can deliver a malicious font file via email, EWW (Emacs Web Wowser), or documents with custom faces, causing Emacs to load it. This can lead to heap memory corruption and potential code execution. This issue was fixed in commit d51a4722316efe0960994d371e1859099894d1ca