==========================================================================
Ubuntu Security Notice USN-6258-1
July 27, 2023

llvm-toolchain-13, llvm-toolchain-14, llvm-toolchain-15 vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 23.04
- Ubuntu 22.04 LTS

Summary:

Several security issues were fixed in LLVM Toolchain.

Software Description:
- llvm-toolchain-13: C, C++ and Objective-C compiler
- llvm-toolchain-14: C, C++ and Objective-C compiler
- llvm-toolchain-15: C, C++ and Objective-C compiler

Details:

It was discovered that LLVM Toolchain did not properly manage memory under
certain circumstances. If a user were tricked into opening a specially
crafted MLIR file, an attacker could possibly use this issue to cause LLVM
Toolchain to crash, resulting in a denial of service. (CVE-2023-29932,
CVE-2023-29934, CVE-2023-29939)

It was discovered that LLVM Toolchain did not properly manage memory under 
certain circumstances. If a user were tricked into opening a specially     
crafted MLIR file, an attacker could possibly use this issue to cause LLVM 
Toolchain to crash, resulting in a denial of service. This issue only
affected llvm-toolchain-15. (CVE-2023-29933)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 23.04:
  llvm-13                         1:13.0.1-11ubuntu14.1
  llvm-13-tools                   1:13.0.1-11ubuntu14.1
  llvm-14                         1:14.0.6-12ubuntu0.23.04.1
  llvm-14-tools                   1:14.0.6-12ubuntu0.23.04.1
  llvm-15                         1:15.0.7-3ubuntu0.23.04.1
  llvm-15-tools                   1:15.0.7-3ubuntu0.23.04.1
  mlir-13-tools                   1:13.0.1-11ubuntu14.1
  mlir-14-tools                   1:14.0.6-12ubuntu0.23.04.1
  mlir-15-tools                   1:15.0.7-3ubuntu0.23.04.1

Ubuntu 22.04 LTS:
  llvm-13                         1:13.0.1-2ubuntu2.2
  llvm-13-tools                   1:13.0.1-2ubuntu2.2
  llvm-14                         1:14.0.0-1ubuntu1.1
  llvm-14-tools                   1:14.0.0-1ubuntu1.1
  llvm-15                         1:15.0.7-0ubuntu0.22.04.3
  llvm-15-tools                   1:15.0.7-0ubuntu0.22.04.3
  mlir-13-tools                   1:13.0.1-2ubuntu2.2
  mlir-14-tools                   1:14.0.0-1ubuntu1.1
  mlir-15-tools                   1:15.0.7-0ubuntu0.22.04.3

In general, a standard system update will make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-6258-1
  CVE-2023-29932, CVE-2023-29933, CVE-2023-29934, CVE-2023-29939

Package Information:
  https://launchpad.net/ubuntu/+source/llvm-toolchain-13/1:13.0.1-11ubuntu14.1
  https://launchpad.net/ubuntu/+source/llvm-toolchain-14/1:14.0.6-12ubuntu0.23.04.1
  https://launchpad.net/ubuntu/+source/llvm-toolchain-15/1:15.0.7-3ubuntu0.23.04.1
  https://launchpad.net/ubuntu/+source/llvm-toolchain-13/1:13.0.1-2ubuntu2.2
  https://launchpad.net/ubuntu/+source/llvm-toolchain-14/1:14.0.0-1ubuntu1.1
  https://launchpad.net/ubuntu/+source/llvm-toolchain-15/1:15.0.7-0ubuntu0.22.04.3