Red Hat Product Errata RHBA-2021:4495 - Bug Fix Advisory
Issued:
2021-11-09
Updated:
2021-11-09

RHBA-2021:4495 - Bug Fix Advisory

Synopsis

bash bug fix and enhancement update

Type/Severity

Bug Fix Advisory

Red Hat Lightspeed patch analysis

Identify and remediate systems affected by this advisory.

View affected systems

Topic

An update for bash is now available for Red Hat Enterprise Linux 8.

Description

For detailed information on changes in this release, see the Red Hat
Enterprise Linux 8.5 Release Notes linked from the References section.

Solution

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

Affected Products

  • Red Hat Enterprise Linux for x86_64 8 x86_64
  • Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.8 x86_64
  • Red Hat Enterprise Linux for x86_64 - Extended Update Support Extension 8.8 x86_64
  • Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.6 x86_64
  • Red Hat Enterprise Linux for x86_64 - Extended Update Support Extension 8.6 x86_64
  • Red Hat Enterprise Linux Server - AUS 8.6 x86_64
  • Red Hat Enterprise Linux for IBM z Systems 8 s390x
  • Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 8.8 s390x
  • Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 8.6 s390x
  • Red Hat Enterprise Linux for Power, little endian 8 ppc64le
  • Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.8 ppc64le
  • Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.6 ppc64le
  • Red Hat Enterprise Linux Server - TUS 8.8 x86_64
  • Red Hat Enterprise Linux Server - TUS 8.6 x86_64
  • Red Hat Enterprise Linux for ARM 64 8 aarch64
  • Red Hat Enterprise Linux for ARM 64 - Extended Update Support 8.8 aarch64
  • Red Hat Enterprise Linux for ARM 64 - Extended Update Support 8.6 aarch64
  • Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.8 ppc64le
  • Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.6 ppc64le
  • Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.8 x86_64
  • Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.6 x86_64

Fixes

  • BZ - 1794884 - HISTTIMEFORMAT causes Segmentation fault under certain conditions
  • BZ - 1943495 - bash loops forever trying to reap children, spins on the CPU

CVEs

(none)

Red Hat Enterprise Linux for x86_64 8

SRPM
bash-4.4.20-2.el8.src.rpm SHA-256: be88f9706ee6157f340e21fbd0f3684377cb0068c7a6b3c9a211c9e438da247d
x86_64
bash-4.4.20-2.el8.x86_64.rpm SHA-256: e3f276e87d06e4af5c92d5030a4a6129124b4aef309ab0b0f6b25f66444cbc9e
bash-debuginfo-4.4.20-2.el8.x86_64.rpm SHA-256: dae55e8df398cb6b9c9c439fa9dabd555717d3a460bc6dfbbfc9ab291f22fbce
bash-debugsource-4.4.20-2.el8.x86_64.rpm SHA-256: 6016607fe8465c1387da7276bd8bd9c85d646a8c5990626c13a700d54236e09c
bash-doc-4.4.20-2.el8.x86_64.rpm SHA-256: b9124f8fe7db268ce47e04ccf46a6db254d87f5ec22c39af51b0a7a65524a999

Red Hat Enterprise Linux for x86_64 - Extended Update Support Extension 8.8

SRPM
bash-4.4.20-2.el8.src.rpm SHA-256: be88f9706ee6157f340e21fbd0f3684377cb0068c7a6b3c9a211c9e438da247d
x86_64
bash-4.4.20-2.el8.x86_64.rpm SHA-256: e3f276e87d06e4af5c92d5030a4a6129124b4aef309ab0b0f6b25f66444cbc9e
bash-debuginfo-4.4.20-2.el8.x86_64.rpm SHA-256: dae55e8df398cb6b9c9c439fa9dabd555717d3a460bc6dfbbfc9ab291f22fbce
bash-debugsource-4.4.20-2.el8.x86_64.rpm SHA-256: 6016607fe8465c1387da7276bd8bd9c85d646a8c5990626c13a700d54236e09c
bash-doc-4.4.20-2.el8.x86_64.rpm SHA-256: b9124f8fe7db268ce47e04ccf46a6db254d87f5ec22c39af51b0a7a65524a999

Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.8

SRPM
bash-4.4.20-2.el8.src.rpm SHA-256: be88f9706ee6157f340e21fbd0f3684377cb0068c7a6b3c9a211c9e438da247d
x86_64
bash-4.4.20-2.el8.x86_64.rpm SHA-256: e3f276e87d06e4af5c92d5030a4a6129124b4aef309ab0b0f6b25f66444cbc9e
bash-debuginfo-4.4.20-2.el8.x86_64.rpm SHA-256: dae55e8df398cb6b9c9c439fa9dabd555717d3a460bc6dfbbfc9ab291f22fbce
bash-debugsource-4.4.20-2.el8.x86_64.rpm SHA-256: 6016607fe8465c1387da7276bd8bd9c85d646a8c5990626c13a700d54236e09c
bash-doc-4.4.20-2.el8.x86_64.rpm SHA-256: b9124f8fe7db268ce47e04ccf46a6db254d87f5ec22c39af51b0a7a65524a999

Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.6

SRPM
bash-4.4.20-2.el8.src.rpm SHA-256: be88f9706ee6157f340e21fbd0f3684377cb0068c7a6b3c9a211c9e438da247d
x86_64
bash-4.4.20-2.el8.x86_64.rpm SHA-256: e3f276e87d06e4af5c92d5030a4a6129124b4aef309ab0b0f6b25f66444cbc9e
bash-debuginfo-4.4.20-2.el8.x86_64.rpm SHA-256: dae55e8df398cb6b9c9c439fa9dabd555717d3a460bc6dfbbfc9ab291f22fbce
bash-debugsource-4.4.20-2.el8.x86_64.rpm SHA-256: 6016607fe8465c1387da7276bd8bd9c85d646a8c5990626c13a700d54236e09c
bash-doc-4.4.20-2.el8.x86_64.rpm SHA-256: b9124f8fe7db268ce47e04ccf46a6db254d87f5ec22c39af51b0a7a65524a999

Red Hat Enterprise Linux for x86_64 - Extended Update Support Extension 8.6

SRPM
bash-4.4.20-2.el8.src.rpm SHA-256: be88f9706ee6157f340e21fbd0f3684377cb0068c7a6b3c9a211c9e438da247d
x86_64
bash-4.4.20-2.el8.x86_64.rpm SHA-256: e3f276e87d06e4af5c92d5030a4a6129124b4aef309ab0b0f6b25f66444cbc9e
bash-debuginfo-4.4.20-2.el8.x86_64.rpm SHA-256: dae55e8df398cb6b9c9c439fa9dabd555717d3a460bc6dfbbfc9ab291f22fbce
bash-debugsource-4.4.20-2.el8.x86_64.rpm SHA-256: 6016607fe8465c1387da7276bd8bd9c85d646a8c5990626c13a700d54236e09c
bash-doc-4.4.20-2.el8.x86_64.rpm SHA-256: b9124f8fe7db268ce47e04ccf46a6db254d87f5ec22c39af51b0a7a65524a999

Red Hat Enterprise Linux Server - AUS 8.6

SRPM
bash-4.4.20-2.el8.src.rpm SHA-256: be88f9706ee6157f340e21fbd0f3684377cb0068c7a6b3c9a211c9e438da247d
x86_64
bash-4.4.20-2.el8.x86_64.rpm SHA-256: e3f276e87d06e4af5c92d5030a4a6129124b4aef309ab0b0f6b25f66444cbc9e
bash-debuginfo-4.4.20-2.el8.x86_64.rpm SHA-256: dae55e8df398cb6b9c9c439fa9dabd555717d3a460bc6dfbbfc9ab291f22fbce
bash-debugsource-4.4.20-2.el8.x86_64.rpm SHA-256: 6016607fe8465c1387da7276bd8bd9c85d646a8c5990626c13a700d54236e09c
bash-doc-4.4.20-2.el8.x86_64.rpm SHA-256: b9124f8fe7db268ce47e04ccf46a6db254d87f5ec22c39af51b0a7a65524a999

Red Hat Enterprise Linux for IBM z Systems 8

SRPM
bash-4.4.20-2.el8.src.rpm SHA-256: be88f9706ee6157f340e21fbd0f3684377cb0068c7a6b3c9a211c9e438da247d
s390x
bash-4.4.20-2.el8.s390x.rpm SHA-256: ac4d6a00530dfd33881186aad365512188001651dbeff4a34d17d8abfc863600
bash-debuginfo-4.4.20-2.el8.s390x.rpm SHA-256: bb6c98630e936eeac07ffd9411b8e47280eef4b2125452ad070748f8d1b4ab2c
bash-debugsource-4.4.20-2.el8.s390x.rpm SHA-256: 1c7c92548d69928f2e3b77913fc9104b47376df7036fa12ab164404162093737
bash-doc-4.4.20-2.el8.s390x.rpm SHA-256: 8acfce955d7f8a152b32854a972380bd6891ccb63564876b4190bc4ebd6780d7

Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 8.8

SRPM
bash-4.4.20-2.el8.src.rpm SHA-256: be88f9706ee6157f340e21fbd0f3684377cb0068c7a6b3c9a211c9e438da247d
s390x
bash-4.4.20-2.el8.s390x.rpm SHA-256: ac4d6a00530dfd33881186aad365512188001651dbeff4a34d17d8abfc863600
bash-debuginfo-4.4.20-2.el8.s390x.rpm SHA-256: bb6c98630e936eeac07ffd9411b8e47280eef4b2125452ad070748f8d1b4ab2c
bash-debugsource-4.4.20-2.el8.s390x.rpm SHA-256: 1c7c92548d69928f2e3b77913fc9104b47376df7036fa12ab164404162093737
bash-doc-4.4.20-2.el8.s390x.rpm SHA-256: 8acfce955d7f8a152b32854a972380bd6891ccb63564876b4190bc4ebd6780d7

Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 8.6

SRPM
bash-4.4.20-2.el8.src.rpm SHA-256: be88f9706ee6157f340e21fbd0f3684377cb0068c7a6b3c9a211c9e438da247d
s390x
bash-4.4.20-2.el8.s390x.rpm SHA-256: ac4d6a00530dfd33881186aad365512188001651dbeff4a34d17d8abfc863600
bash-debuginfo-4.4.20-2.el8.s390x.rpm SHA-256: bb6c98630e936eeac07ffd9411b8e47280eef4b2125452ad070748f8d1b4ab2c
bash-debugsource-4.4.20-2.el8.s390x.rpm SHA-256: 1c7c92548d69928f2e3b77913fc9104b47376df7036fa12ab164404162093737
bash-doc-4.4.20-2.el8.s390x.rpm SHA-256: 8acfce955d7f8a152b32854a972380bd6891ccb63564876b4190bc4ebd6780d7

Red Hat Enterprise Linux for Power, little endian 8

SRPM
bash-4.4.20-2.el8.src.rpm SHA-256: be88f9706ee6157f340e21fbd0f3684377cb0068c7a6b3c9a211c9e438da247d
ppc64le
bash-4.4.20-2.el8.ppc64le.rpm SHA-256: 5f36844e5936aa6c77d6fc074beb50a9218f339f6a32c896c4c08fcf8696d610
bash-debuginfo-4.4.20-2.el8.ppc64le.rpm SHA-256: 6d3ecd0127363e7f4f9a58730172df6b422c4f1e94f39730a23cf36cba7b5b58
bash-debugsource-4.4.20-2.el8.ppc64le.rpm SHA-256: 749795a94c0c3a82c1e50b8f8e4bf922a92d32740b05d4dace321a14be40f53c
bash-doc-4.4.20-2.el8.ppc64le.rpm SHA-256: 2237c4b0ac6d6ce3077acfe095c2969b3d52e225bb37add782e286d33775bf02

Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.8

SRPM
bash-4.4.20-2.el8.src.rpm SHA-256: be88f9706ee6157f340e21fbd0f3684377cb0068c7a6b3c9a211c9e438da247d
ppc64le
bash-4.4.20-2.el8.ppc64le.rpm SHA-256: 5f36844e5936aa6c77d6fc074beb50a9218f339f6a32c896c4c08fcf8696d610
bash-debuginfo-4.4.20-2.el8.ppc64le.rpm SHA-256: 6d3ecd0127363e7f4f9a58730172df6b422c4f1e94f39730a23cf36cba7b5b58
bash-debugsource-4.4.20-2.el8.ppc64le.rpm SHA-256: 749795a94c0c3a82c1e50b8f8e4bf922a92d32740b05d4dace321a14be40f53c
bash-doc-4.4.20-2.el8.ppc64le.rpm SHA-256: 2237c4b0ac6d6ce3077acfe095c2969b3d52e225bb37add782e286d33775bf02

Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.6

SRPM
bash-4.4.20-2.el8.src.rpm SHA-256: be88f9706ee6157f340e21fbd0f3684377cb0068c7a6b3c9a211c9e438da247d
ppc64le
bash-4.4.20-2.el8.ppc64le.rpm SHA-256: 5f36844e5936aa6c77d6fc074beb50a9218f339f6a32c896c4c08fcf8696d610
bash-debuginfo-4.4.20-2.el8.ppc64le.rpm SHA-256: 6d3ecd0127363e7f4f9a58730172df6b422c4f1e94f39730a23cf36cba7b5b58
bash-debugsource-4.4.20-2.el8.ppc64le.rpm SHA-256: 749795a94c0c3a82c1e50b8f8e4bf922a92d32740b05d4dace321a14be40f53c
bash-doc-4.4.20-2.el8.ppc64le.rpm SHA-256: 2237c4b0ac6d6ce3077acfe095c2969b3d52e225bb37add782e286d33775bf02

Red Hat Enterprise Linux Server - TUS 8.8

SRPM
bash-4.4.20-2.el8.src.rpm SHA-256: be88f9706ee6157f340e21fbd0f3684377cb0068c7a6b3c9a211c9e438da247d
x86_64
bash-4.4.20-2.el8.x86_64.rpm SHA-256: e3f276e87d06e4af5c92d5030a4a6129124b4aef309ab0b0f6b25f66444cbc9e
bash-debuginfo-4.4.20-2.el8.x86_64.rpm SHA-256: dae55e8df398cb6b9c9c439fa9dabd555717d3a460bc6dfbbfc9ab291f22fbce
bash-debugsource-4.4.20-2.el8.x86_64.rpm SHA-256: 6016607fe8465c1387da7276bd8bd9c85d646a8c5990626c13a700d54236e09c
bash-doc-4.4.20-2.el8.x86_64.rpm SHA-256: b9124f8fe7db268ce47e04ccf46a6db254d87f5ec22c39af51b0a7a65524a999

Red Hat Enterprise Linux Server - TUS 8.6

SRPM
bash-4.4.20-2.el8.src.rpm SHA-256: be88f9706ee6157f340e21fbd0f3684377cb0068c7a6b3c9a211c9e438da247d
x86_64
bash-4.4.20-2.el8.x86_64.rpm SHA-256: e3f276e87d06e4af5c92d5030a4a6129124b4aef309ab0b0f6b25f66444cbc9e
bash-debuginfo-4.4.20-2.el8.x86_64.rpm SHA-256: dae55e8df398cb6b9c9c439fa9dabd555717d3a460bc6dfbbfc9ab291f22fbce
bash-debugsource-4.4.20-2.el8.x86_64.rpm SHA-256: 6016607fe8465c1387da7276bd8bd9c85d646a8c5990626c13a700d54236e09c
bash-doc-4.4.20-2.el8.x86_64.rpm SHA-256: b9124f8fe7db268ce47e04ccf46a6db254d87f5ec22c39af51b0a7a65524a999

Red Hat Enterprise Linux for ARM 64 8

SRPM
bash-4.4.20-2.el8.src.rpm SHA-256: be88f9706ee6157f340e21fbd0f3684377cb0068c7a6b3c9a211c9e438da247d
aarch64
bash-4.4.20-2.el8.aarch64.rpm SHA-256: 68aee2a54fc66cf2f15c6ca57f5a960572a757114df1761b48e501d5de839f50
bash-debuginfo-4.4.20-2.el8.aarch64.rpm SHA-256: 7aa408c5804056aaa5c02682a09aefeb205e51c2da96648145f12d1f74e1eab1
bash-debugsource-4.4.20-2.el8.aarch64.rpm SHA-256: d84f701cf3352f43a8b4e5eaa1e3c1c671350883a0c4baf74d181c8c87f668dc
bash-doc-4.4.20-2.el8.aarch64.rpm SHA-256: 8cbdf1dce265123803201ee24fc7310474c852259aed8c39ff686dee1f58e88e

Red Hat Enterprise Linux for ARM 64 - Extended Update Support 8.8

SRPM
bash-4.4.20-2.el8.src.rpm SHA-256: be88f9706ee6157f340e21fbd0f3684377cb0068c7a6b3c9a211c9e438da247d
aarch64
bash-4.4.20-2.el8.aarch64.rpm SHA-256: 68aee2a54fc66cf2f15c6ca57f5a960572a757114df1761b48e501d5de839f50
bash-debuginfo-4.4.20-2.el8.aarch64.rpm SHA-256: 7aa408c5804056aaa5c02682a09aefeb205e51c2da96648145f12d1f74e1eab1
bash-debugsource-4.4.20-2.el8.aarch64.rpm SHA-256: d84f701cf3352f43a8b4e5eaa1e3c1c671350883a0c4baf74d181c8c87f668dc
bash-doc-4.4.20-2.el8.aarch64.rpm SHA-256: 8cbdf1dce265123803201ee24fc7310474c852259aed8c39ff686dee1f58e88e

Red Hat Enterprise Linux for ARM 64 - Extended Update Support 8.6

SRPM
bash-4.4.20-2.el8.src.rpm SHA-256: be88f9706ee6157f340e21fbd0f3684377cb0068c7a6b3c9a211c9e438da247d
aarch64
bash-4.4.20-2.el8.aarch64.rpm SHA-256: 68aee2a54fc66cf2f15c6ca57f5a960572a757114df1761b48e501d5de839f50
bash-debuginfo-4.4.20-2.el8.aarch64.rpm SHA-256: 7aa408c5804056aaa5c02682a09aefeb205e51c2da96648145f12d1f74e1eab1
bash-debugsource-4.4.20-2.el8.aarch64.rpm SHA-256: d84f701cf3352f43a8b4e5eaa1e3c1c671350883a0c4baf74d181c8c87f668dc
bash-doc-4.4.20-2.el8.aarch64.rpm SHA-256: 8cbdf1dce265123803201ee24fc7310474c852259aed8c39ff686dee1f58e88e

Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.8

SRPM
bash-4.4.20-2.el8.src.rpm SHA-256: be88f9706ee6157f340e21fbd0f3684377cb0068c7a6b3c9a211c9e438da247d
ppc64le
bash-4.4.20-2.el8.ppc64le.rpm SHA-256: 5f36844e5936aa6c77d6fc074beb50a9218f339f6a32c896c4c08fcf8696d610
bash-debuginfo-4.4.20-2.el8.ppc64le.rpm SHA-256: 6d3ecd0127363e7f4f9a58730172df6b422c4f1e94f39730a23cf36cba7b5b58
bash-debugsource-4.4.20-2.el8.ppc64le.rpm SHA-256: 749795a94c0c3a82c1e50b8f8e4bf922a92d32740b05d4dace321a14be40f53c
bash-doc-4.4.20-2.el8.ppc64le.rpm SHA-256: 2237c4b0ac6d6ce3077acfe095c2969b3d52e225bb37add782e286d33775bf02

Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.6

SRPM
bash-4.4.20-2.el8.src.rpm SHA-256: be88f9706ee6157f340e21fbd0f3684377cb0068c7a6b3c9a211c9e438da247d
ppc64le
bash-4.4.20-2.el8.ppc64le.rpm SHA-256: 5f36844e5936aa6c77d6fc074beb50a9218f339f6a32c896c4c08fcf8696d610
bash-debuginfo-4.4.20-2.el8.ppc64le.rpm SHA-256: 6d3ecd0127363e7f4f9a58730172df6b422c4f1e94f39730a23cf36cba7b5b58
bash-debugsource-4.4.20-2.el8.ppc64le.rpm SHA-256: 749795a94c0c3a82c1e50b8f8e4bf922a92d32740b05d4dace321a14be40f53c
bash-doc-4.4.20-2.el8.ppc64le.rpm SHA-256: 2237c4b0ac6d6ce3077acfe095c2969b3d52e225bb37add782e286d33775bf02

Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.8

SRPM
bash-4.4.20-2.el8.src.rpm SHA-256: be88f9706ee6157f340e21fbd0f3684377cb0068c7a6b3c9a211c9e438da247d
x86_64
bash-4.4.20-2.el8.x86_64.rpm SHA-256: e3f276e87d06e4af5c92d5030a4a6129124b4aef309ab0b0f6b25f66444cbc9e
bash-debuginfo-4.4.20-2.el8.x86_64.rpm SHA-256: dae55e8df398cb6b9c9c439fa9dabd555717d3a460bc6dfbbfc9ab291f22fbce
bash-debugsource-4.4.20-2.el8.x86_64.rpm SHA-256: 6016607fe8465c1387da7276bd8bd9c85d646a8c5990626c13a700d54236e09c
bash-doc-4.4.20-2.el8.x86_64.rpm SHA-256: b9124f8fe7db268ce47e04ccf46a6db254d87f5ec22c39af51b0a7a65524a999

Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.6

SRPM
bash-4.4.20-2.el8.src.rpm SHA-256: be88f9706ee6157f340e21fbd0f3684377cb0068c7a6b3c9a211c9e438da247d
x86_64
bash-4.4.20-2.el8.x86_64.rpm SHA-256: e3f276e87d06e4af5c92d5030a4a6129124b4aef309ab0b0f6b25f66444cbc9e
bash-debuginfo-4.4.20-2.el8.x86_64.rpm SHA-256: dae55e8df398cb6b9c9c439fa9dabd555717d3a460bc6dfbbfc9ab291f22fbce
bash-debugsource-4.4.20-2.el8.x86_64.rpm SHA-256: 6016607fe8465c1387da7276bd8bd9c85d646a8c5990626c13a700d54236e09c
bash-doc-4.4.20-2.el8.x86_64.rpm SHA-256: b9124f8fe7db268ce47e04ccf46a6db254d87f5ec22c39af51b0a7a65524a999

The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.