CVE-2022-4743

A potential memory leak issue was discovered in SDL2 in GLES_CreateTexture() function in SDL_render_gles.c. The vulnerability allows an attacker to cause a denial of service attack. The vulnerability affects SDL2 v2.0.4 and above. SDL-1.x are not affected.

Weakness

The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory.

Affected Software

Potential Mitigations

• Choose a language or tool that provides automatic memory management, or makes manual memory management less error-prone.
• For example, glibc in Linux provides protection against free of invalid pointers.
• When using Xcode to target OS X or iOS, enable automatic reference counting (ARC) [REF-391].
• To help correctly and consistently manage memory when programming in C++, consider using a smart pointer class such as std::auto_ptr (defined by ISO/IEC ISO/IEC 14882:2003), std::shared_ptr and std::unique_ptr (specified by an upcoming revision of the C++ standard, informally referred to as C++ 1x), or equivalent solutions such as Boost.

References

• https://access.redhat.com/security/cve/CVE-2022-4743
• https://bugzilla.redhat.com/show_bug.cgi?id=2156290
• https://github.com/libsdl-org/SDL/commit/00b67f55727bc0944c3266e2b875440da132ce4b
• https://github.com/libsdl-org/SDL/pull/6269
• https://lists.debian.org/debian-lts-announce/2023/02/msg00008.html
• https://security.gentoo.org/glsa/202305-18
• https://access.redhat.com/security/cve/CVE-2022-4743
• https://bugzilla.redhat.com/show_bug.cgi?id=2156290
• https://github.com/libsdl-org/SDL/commit/00b67f55727bc0944c3266e2b875440da132ce4b
• https://github.com/libsdl-org/SDL/pull/6269
• https://lists.debian.org/debian-lts-announce/2023/02/msg00008.html
• https://security.gentoo.org/glsa/202305-18