Release date: 
Wednesday, February 12, 2020 - 11:34
Affected Channels: 
Asianux Server 7 for x86_64

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.


Update packages.

Additional Info: 



  1. binutils-2.27-41.base.el7.2.src.rpm
    MD5: 8f6ad1dd21431b481ee94641bb83deb4
    SHA-256: bafe24b342699ab707c1b53cfede579c9c98b1cdad5050bbb8b06c2e574894aa
    Size: 24.41 MB

Asianux Server 7 for x86_64
  1. binutils-2.27-41.base.el7.2.x86_64.rpm
    MD5: 910d36f252c782dcd9095ea997597f5a
    SHA-256: 7f1960cbb381023973165258b499fe8886e1ee7d1603738b79a31d20a5c2008e
    Size: 5.91 MB
  2. binutils-devel-2.27-41.base.el7.2.x86_64.rpm
    MD5: ff13a7a32bd742c8e0e975a45d3d9182
    SHA-256: 1433fd75faa61d12a39c7df5502ef91f555d50e7908345e3209f178b4fbd2f24
    Size: 878.37 kB
  3. binutils-devel-2.27-41.base.el7.2.i686.rpm
    MD5: a3cbae5bb511a7e66ece7244e032ef06
    SHA-256: 66bdbe76cb8c0f5e75dcd38656b9e29e95ccb3a639bce4e05314c9cb1fff77f6
    Size: 917.89 kB
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