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Fedora 44 llvm Severe Buffer Overflow Resolution 2026-597e8f9de1

fedora
Calendar Grey July 22, 2026
Scroller Fedora
Critical update for Fedora 44 addresses buffer overflow in LLVM. Fixes multiple miscompilations and security issues.
Fedora 44 has released an update for LLVM 22.1.8 addressing buffer overflow issues, miscompilations affecting Rust applications, and other fixes, enhancing overall compiler stabili...

Summary

LLVM is a compiler infrastructure designed for compile-time, link-time,

runtime, and idle-time optimization of programs from arbitrary programming

languages. The compiler infrastructure includes mirror sets of programming

tools as well as libraries with equivalent functionality.

Update Information:

Backport fixes from LLVM 23 Fix an issue that could cause a buffer overflow when reading a corrupted bitcode file. Fix a miscompilation known to affect rust applications. Fix a miscompilation in x86 vectorized code. Fix 2 issues in LLD.

Topics%20covered

Topics Covered

security advisory fedora buffer overflow critical DoS llvm

Change Log

* Thu Jul 16 2026 Tulio Magno Quites Machado Filho - 22.1.8-4 - More backported fixes * Thu Jul 16 2026 Tulio Magno Quites Machado Filho - 22.1.8-3 - Fix miscompilation * Thu Jul 16 2026 Tulio Magno Quites Machado Filho - 22.1.8-2 - Fix buffer overflow

References


[ 1 ] Bug #2496390 - CVE-2026-13574 llvm: LLVM: Denial of service via heap-based buffer overflow in Bitcode File Handler [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2496390 [ 2 ] Bug #2499684 - miscompilation that leads to segfaults with Rust 1.97.0 https://bugzilla.redhat.com/show_bug.cgi?id=2499684

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-597e8f9de1' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label

Severity
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Name: llvm
Product: Fedora 44
Version: 22.1.8
Release: 4.fc44
URL: http://llvm.org
Summary: The Low Level Virtual Machine

Topics%20covered

Topics Covered

security advisory fedora buffer overflow critical DoS llvm

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