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IV79441: POSSIBLE SYSTEM CRASH USING PROCFS TO READ 32BIT PROCESS MAP FILAPPLIES TO AIX 7200-00

A fix is available

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • ***************************************************************
    * USERS AFFECTED:
    * Systems running the AIX 7200-00 Technology Level
    * with bos.mp64 at the 7.2.0.0 or 7.2.0.1 level.
    ***************************************************************
    * PROBLEM DESCRIPTION:
    * Using the procmap, procldd, or genld command on a 32 bit
    * process, or directly reading /proc/<pid>/map for a 32 bit
    * process, may result in kernel memory corruption which may
    * result in an immediate or future crash of the system.
    *
    * This only affects AIX 7.1 TL4 and 7.2
    ***************************************************************
    * RECOMMENDATION:
    * Install APAR IV79441.
    * Prior to fix availability, an interim fix is available from
    * either
    * ftp://aix.software.ibm.com/aix/ifixes/iv79441/
    * https://aix.software.ibm.com/aix/ifixes/iv79441/
    * The ifix can be installed using Live Update (LU).
    * If LU is not used, installation of the ifix requires a
    * reboot.
    ***************************************************************
    

Local fix

Problem summary

  • ***************************************************************
    * USERS AFFECTED:
    * Systems running the AIX 7200-00 Technology Level
    * with bos.mp64 at the 7.2.0.0 or 7.2.0.1 level.
    ***************************************************************
    * PROBLEM DESCRIPTION:
    * Using the procmap, procldd, or genld command on a 32 bit
    * process, or directly reading /proc/<pid>/map for a 32 bit
    * process, may result in kernel memory corruption which may
    * result in an immediate or future crash of the system.
    *
    * This only affects AIX 7.1 TL4 and 7.2
    ***************************************************************
    * RECOMMENDATION:
    * Install APAR IV79441.
    * Prior to fix availability, an interim fix is available from
    * either
    * ftp://aix.software.ibm.com/aix/ifixes/iv79441/
    * https://aix.software.ibm.com/aix/ifixes/iv79441/
    * The ifix can be installed using Live Update (LU).
    * If LU is not used, installation of the ifix requires a
    * reboot.
    ***************************************************************
    

Problem conclusion

  • Fix the kernel code that generates the /proc/<pid>/map data.
    The procmap reads this data, however, user processes can also
    access the file directly if they have sufficient privilege to
    do so.
    

Temporary fix

  • *********
    * HIPER *
    *********
    

Comments

APAR Information

  • APAR number

    IV79441

  • Reported component name

    AIX V7.2

  • Reported component ID

    5765CD200

  • Reported release

    720

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Submitted date

    2015-12-04

  • Closed date

    2015-12-04

  • Last modified date

    2016-11-09

  • APAR is sysrouted FROM one or more of the following:

    IV79262

  • APAR is sysrouted TO one or more of the following:

Fix information

  • Fixed component name

    AIX V7.2

  • Fixed component ID

    5765CD200

Applicable component levels

  • R720 PSY U870327

       UP16/05/04 I 1000 Ž

PTF to Fileset Mapping

[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSVEF8","label":"AIX 7.2 Enterprise Edition"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"720","Edition":"","Line of Business":{"code":"LOB08","label":"Cognitive Systems"}},{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG11S","label":"AIX 7.2 HIPERS, APARs and Fixes"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"720","Edition":"","Line of Business":{"code":"","label":""}}]

Document Information

Modified date:
09 November 2016