CVE-2022-27943

A flaw was found in binutils, where GNU GCC is vulnerable to a denial of service caused by a stack consumption in the demangle_const() function in libiberty/rust-demangle.c. The vulnerability exists due to the application not properly controlling the consumption of internal resources. By persuading a victim to open a specially-crafted file, an attacker could cause a denial of service.

The issue is classified as low severity primarily because binutils is not typically exposed to untrusted inputs in most environments, limiting its exploitation potential. The stack overflow in demangle_const() only triggers during the parsing of malformed ELF files, which would require an attacker to convince a user to process a malicious file with it. Moreover, binutils does not handle privileged operations, meaning exploitation is unlikely to lead to system compromise or escalation of privileges. Additionally, the impact is localized to the application itself, without affecting the broader system or network security.

This vulnerability is due to a flaw in libiberty. Neither libgcc nor libstdc++ include the affected code. Consequently, neither of those libraries are affected by this vulnerability.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.