AXBA:2020-338:01

リリース日: 
2020/09/14 Monday - 13:18
題名: 
gcc-toolset-9-binutils-2.32-17.el8
影響のあるチャネル: 
Asianux Server 8 for x86_64
Severity: 
N/A
Description: 

GCC Toolset is a compiler toolset that provides recent versions of development
tools. GCC Toolset is an Application Stream packaged as a Software Collection.

The binutils packages provide a collection of binary utilities for the manipulation of object code in various object file formats. It includes the ar, as, gprof, ld, nm, objcopy, objdump, ranlib, readelf, size, strings, strip, and addr2line utilities.

Bug Fix(es):

* Certain Intel CPUs are affected by the Jump Conditional Code (JCC) bug causing machine instructions to be executed incorrectly. Consequently, the affected CPUs might not execute programs properly. The full fix involves updating the microcode of vulnerable CPUs, which can cause a performance degradation. This update enables a workaround in the assembler that helps to mitigate the performance loss. The workaround is not enabled by default.

To apply the workaround, recompile a program using GCC with the "-Wa,-mbranches-within-32B-boundaries" command-line option. A program recompiled with this command-line option will not be affected by JCC flaw, but the microcode update is still necessary in order to fully protect a system.

Note that applying the workaround will increase the size of the program and there can still be a slight performance decrease, although it should be less than it would have been without the recompilation.

解決策: 

Update packages.

追加情報: 

N/A

ダウンロード: 

SRPMS
  1. gcc-toolset-9-binutils-2.32-17.el8.src.rpm
    MD5: fd376ce00122777c1a8a901e9a99427b
    SHA-256: a7797b288786c51021b0a93e8f2d4f00157eb900599675024be96ca4a586946a
    Size: 20.07 MB

Asianux Server 8 for x86_64
  1. gcc-toolset-9-binutils-2.32-17.el8.x86_64.rpm
    MD5: 44147cc9bd1394543e8306c208351802
    SHA-256: a7d3cc31f2bc9747c1f127697e02765b5c43475ebca5db6688b1c42215d40e4a
    Size: 6.16 MB
  2. gcc-toolset-9-binutils-devel-2.32-17.el8.x86_64.rpm
    MD5: 4ff31dc908e9b45f25b1a9bab3547546
    SHA-256: f78c6bae95b5474c49763556e9cb2687ef910384e4d43958500d0af09f374384
    Size: 0.95 MB
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