831225 – (CVE-2021-46195) <sys-devel/gcc-12.1.0: uncontrolled recursion in libiberty/rust-demangle.c

Bug 831225 (CVE-2021-46195) - <sys-devel/gcc-12.1.0: uncontrolled recursion in libiberty/rust-demangle.c

Summary: <sys-devel/gcc-12.1.0: uncontrolled recursion in libiberty/rust-demangle.c

Status:	CONFIRMED

Alias:	CVE-2021-46195

Product:	Gentoo Security
Classification:	Unclassified
Component:	Vulnerabilities (show other bugs)
Hardware:	All Linux

Importance:	Normal normal (vote)
Assignee:	Gentoo Security

URL:	https://gcc.gnu.org/bugzilla/show_bug...
Whiteboard:	C3 [noglsa cleanup]
Keywords:

Depends on:
Blocks:

Reported:	2022-01-15 08:35 UTC by John Helmert III
Modified:	2024-07-12 08:39 UTC (History)
CC List:	0 users

See Also:
Package list:
Runtime testing required:	---

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Description John Helmert III archtester

2022-01-15 08:35:37 UTC

CVE-2021-46195:

GCC v12.0 was discovered to contain an uncontrolled recursion via the component libiberty/rust-demangle.c. This vulnerability allows attackers to cause a Denial of Service (DoS) by consuming excessive CPU and memory resources.

Comment 1 John Helmert III archtester

2022-08-14 19:31:28 UTC

Also seems to only be in 12.1.0

Comment 2 Andreas K. Hüttel archtester

2023-08-24 19:49:19 UTC

(In reply to John Helmert III from comment #1)
> Also seems to only be in 12.1.0

And that is gone now.

Comment 3 Sam James archtester

2024-07-11 17:07:16 UTC

libiberty is a bundled library in GCC, binutils, gdb and it's only exposed in some narrow ways. I don't think this is exploitable at all, hence A->C.