Bug 2563087 - CVE-2026-115456 mingw-gcc: Out-of-bounds read in std::from_chars [fedora-all]
Summary: CVE-2026-115456 mingw-gcc: Out-of-bounds read in std::from_chars [fedora-all]
Keywords:
Status: CLOSED NEXTRELEASE
Alias: None
Product: Fedora
Classification: Fedora
Component: mingw-gcc
Version: rawhide
Hardware: Unspecified
OS: Unspecified
low
low
Target Milestone: ---
Assignee: Kalev Lember
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["545bcf7b-5733-4a50-a1bd-1...
Depends On:
Blocks: CVE-2026-115456
TreeView+ depends on / blocked
 
Reported: 2026-10-28 18:43 UTC by Marco Benatto
Modified: 2026-10-28 22:03 UTC (History)
4 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2026-10-28 22:03:44 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)

Description Marco Benatto 2026-10-28 18:43:51 UTC
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

There's a out-of-bounds read in std::from_chars() in libstdc++ when the string being passed as parameter is not NULL terminated. The impact is limited to read invalid float point numbers or reach a non-readable memory position resulting a a Denial-of-Service only.

Comment 1 Sandro Mani 2026-10-28 22:03:44 UTC
I don't think a bug in a compiler qualifies for a CVE. This will be fixed with regular upstream gcc releases, as they become available.


Note You need to log in before you can comment on or make changes to this bug.