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Red Hat: CVE-2021-33909: Important: kernel security and bug fix update (Multiple Advisories)

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Red Hat: CVE-2021-33909: Important: kernel security and bug fix update (Multiple Advisories)

Severity
7
CVSS
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
Published
07/20/2021
Created
07/22/2021
Added
07/21/2021
Modified
08/03/2021

Description

fs/seq_file.c in the Linux kernel 3.16 through 5.13.x before 5.13.4 does not properly restrict seq buffer allocations, leading to an integer overflow, an Out-of-bounds Write, and escalation to root by an unprivileged user, aka CID-8cae8cd89f05.

Solution(s)

  • redhat-upgrade-kernel
  • redhat-upgrade-kernel-rt
  • redhat-upgrade-kpatch-patch-3_10_0-1062_30_1
  • redhat-upgrade-kpatch-patch-3_10_0-1062_30_1-debuginfo
  • redhat-upgrade-kpatch-patch-3_10_0-1062_31_2
  • redhat-upgrade-kpatch-patch-3_10_0-1062_31_2-debuginfo
  • redhat-upgrade-kpatch-patch-3_10_0-1062_31_3
  • redhat-upgrade-kpatch-patch-3_10_0-1062_31_3-debuginfo
  • redhat-upgrade-kpatch-patch-3_10_0-1062_33_1
  • redhat-upgrade-kpatch-patch-3_10_0-1062_33_1-debuginfo
  • redhat-upgrade-kpatch-patch-3_10_0-1062_36_1
  • redhat-upgrade-kpatch-patch-3_10_0-1062_36_1-debuginfo
  • redhat-upgrade-kpatch-patch-3_10_0-1062_37_1
  • redhat-upgrade-kpatch-patch-3_10_0-1062_37_1-debuginfo
  • redhat-upgrade-kpatch-patch-3_10_0-1062_40_1
  • redhat-upgrade-kpatch-patch-3_10_0-1062_40_1-debuginfo
  • redhat-upgrade-kpatch-patch-3_10_0-1062_43_1
  • redhat-upgrade-kpatch-patch-3_10_0-1062_43_1-debuginfo
  • redhat-upgrade-kpatch-patch-3_10_0-1062_45_1
  • redhat-upgrade-kpatch-patch-3_10_0-1062_45_1-debuginfo
  • redhat-upgrade-kpatch-patch-3_10_0-1062_46_1
  • redhat-upgrade-kpatch-patch-3_10_0-1062_46_1-debuginfo
  • redhat-upgrade-kpatch-patch-3_10_0-1062_49_1
  • redhat-upgrade-kpatch-patch-3_10_0-1062_49_1-debuginfo
  • redhat-upgrade-kpatch-patch-3_10_0-1062_51_1
  • redhat-upgrade-kpatch-patch-3_10_0-1062_51_1-debuginfo
  • redhat-upgrade-kpatch-patch-3_10_0-1160
  • redhat-upgrade-kpatch-patch-3_10_0-1160-debuginfo
  • redhat-upgrade-kpatch-patch-3_10_0-1160_11_1
  • redhat-upgrade-kpatch-patch-3_10_0-1160_11_1-debuginfo
  • redhat-upgrade-kpatch-patch-3_10_0-1160_15_2
  • redhat-upgrade-kpatch-patch-3_10_0-1160_15_2-debuginfo
  • redhat-upgrade-kpatch-patch-3_10_0-1160_21_1
  • redhat-upgrade-kpatch-patch-3_10_0-1160_21_1-debuginfo
  • redhat-upgrade-kpatch-patch-3_10_0-1160_24_1
  • redhat-upgrade-kpatch-patch-3_10_0-1160_24_1-debuginfo
  • redhat-upgrade-kpatch-patch-3_10_0-1160_25_1
  • redhat-upgrade-kpatch-patch-3_10_0-1160_25_1-debuginfo
  • redhat-upgrade-kpatch-patch-3_10_0-1160_2_1
  • redhat-upgrade-kpatch-patch-3_10_0-1160_2_1-debuginfo
  • redhat-upgrade-kpatch-patch-3_10_0-1160_2_2
  • redhat-upgrade-kpatch-patch-3_10_0-1160_2_2-debuginfo
  • redhat-upgrade-kpatch-patch-3_10_0-1160_31_1
  • redhat-upgrade-kpatch-patch-3_10_0-1160_31_1-debuginfo
  • redhat-upgrade-kpatch-patch-3_10_0-1160_6_1
  • redhat-upgrade-kpatch-patch-3_10_0-1160_6_1-debuginfo
  • redhat-upgrade-kpatch-patch-4_18_0-147_24_2
  • redhat-upgrade-kpatch-patch-4_18_0-147_24_2-debuginfo
  • redhat-upgrade-kpatch-patch-4_18_0-147_24_2-debugsource
  • redhat-upgrade-kpatch-patch-4_18_0-147_27_1
  • redhat-upgrade-kpatch-patch-4_18_0-147_27_1-debuginfo
  • redhat-upgrade-kpatch-patch-4_18_0-147_27_1-debugsource
  • redhat-upgrade-kpatch-patch-4_18_0-147_32_1
  • redhat-upgrade-kpatch-patch-4_18_0-147_32_1-debuginfo
  • redhat-upgrade-kpatch-patch-4_18_0-147_32_1-debugsource
  • redhat-upgrade-kpatch-patch-4_18_0-147_34_1
  • redhat-upgrade-kpatch-patch-4_18_0-147_34_1-debuginfo
  • redhat-upgrade-kpatch-patch-4_18_0-147_34_1-debugsource
  • redhat-upgrade-kpatch-patch-4_18_0-147_38_1
  • redhat-upgrade-kpatch-patch-4_18_0-147_38_1-debuginfo
  • redhat-upgrade-kpatch-patch-4_18_0-147_38_1-debugsource
  • redhat-upgrade-kpatch-patch-4_18_0-147_43_1
  • redhat-upgrade-kpatch-patch-4_18_0-147_43_1-debuginfo
  • redhat-upgrade-kpatch-patch-4_18_0-147_43_1-debugsource
  • redhat-upgrade-kpatch-patch-4_18_0-147_44_1
  • redhat-upgrade-kpatch-patch-4_18_0-147_44_1-debuginfo
  • redhat-upgrade-kpatch-patch-4_18_0-147_44_1-debugsource
  • redhat-upgrade-kpatch-patch-4_18_0-147_48_1
  • redhat-upgrade-kpatch-patch-4_18_0-147_48_1-debuginfo
  • redhat-upgrade-kpatch-patch-4_18_0-147_48_1-debugsource
  • redhat-upgrade-kpatch-patch-4_18_0-147_51_1
  • redhat-upgrade-kpatch-patch-4_18_0-147_51_1-debuginfo
  • redhat-upgrade-kpatch-patch-4_18_0-147_51_1-debugsource
  • redhat-upgrade-kpatch-patch-4_18_0-193_13_2
  • redhat-upgrade-kpatch-patch-4_18_0-193_13_2-debuginfo
  • redhat-upgrade-kpatch-patch-4_18_0-193_13_2-debugsource
  • redhat-upgrade-kpatch-patch-4_18_0-193_14_3
  • redhat-upgrade-kpatch-patch-4_18_0-193_14_3-debuginfo
  • redhat-upgrade-kpatch-patch-4_18_0-193_14_3-debugsource
  • redhat-upgrade-kpatch-patch-4_18_0-193_19_1
  • redhat-upgrade-kpatch-patch-4_18_0-193_19_1-debuginfo
  • redhat-upgrade-kpatch-patch-4_18_0-193_19_1-debugsource
  • redhat-upgrade-kpatch-patch-4_18_0-193_28_1
  • redhat-upgrade-kpatch-patch-4_18_0-193_28_1-debuginfo
  • redhat-upgrade-kpatch-patch-4_18_0-193_28_1-debugsource
  • redhat-upgrade-kpatch-patch-4_18_0-193_29_1
  • redhat-upgrade-kpatch-patch-4_18_0-193_29_1-debuginfo
  • redhat-upgrade-kpatch-patch-4_18_0-193_29_1-debugsource
  • redhat-upgrade-kpatch-patch-4_18_0-193_37_1
  • redhat-upgrade-kpatch-patch-4_18_0-193_37_1-debuginfo
  • redhat-upgrade-kpatch-patch-4_18_0-193_37_1-debugsource
  • redhat-upgrade-kpatch-patch-4_18_0-193_40_1
  • redhat-upgrade-kpatch-patch-4_18_0-193_40_1-debuginfo
  • redhat-upgrade-kpatch-patch-4_18_0-193_40_1-debugsource
  • redhat-upgrade-kpatch-patch-4_18_0-193_41_1
  • redhat-upgrade-kpatch-patch-4_18_0-193_41_1-debuginfo
  • redhat-upgrade-kpatch-patch-4_18_0-193_41_1-debugsource
  • redhat-upgrade-kpatch-patch-4_18_0-193_46_1
  • redhat-upgrade-kpatch-patch-4_18_0-193_46_1-debuginfo
  • redhat-upgrade-kpatch-patch-4_18_0-193_46_1-debugsource
  • redhat-upgrade-kpatch-patch-4_18_0-193_47_1
  • redhat-upgrade-kpatch-patch-4_18_0-193_47_1-debuginfo
  • redhat-upgrade-kpatch-patch-4_18_0-193_47_1-debugsource
  • redhat-upgrade-kpatch-patch-4_18_0-193_51_1
  • redhat-upgrade-kpatch-patch-4_18_0-193_51_1-debuginfo
  • redhat-upgrade-kpatch-patch-4_18_0-193_51_1-debugsource
  • redhat-upgrade-kpatch-patch-4_18_0-193_56_1
  • redhat-upgrade-kpatch-patch-4_18_0-193_56_1-debuginfo
  • redhat-upgrade-kpatch-patch-4_18_0-193_56_1-debugsource
  • redhat-upgrade-kpatch-patch-4_18_0-305
  • redhat-upgrade-kpatch-patch-4_18_0-305-debuginfo
  • redhat-upgrade-kpatch-patch-4_18_0-305-debugsource
  • redhat-upgrade-kpatch-patch-4_18_0-305_3_1
  • redhat-upgrade-kpatch-patch-4_18_0-305_3_1-debuginfo
  • redhat-upgrade-kpatch-patch-4_18_0-305_3_1-debugsource
  • redhat-upgrade-kpatch-patch-4_18_0-305_7_1
  • redhat-upgrade-kpatch-patch-4_18_0-305_7_1-debuginfo
  • redhat-upgrade-kpatch-patch-4_18_0-305_7_1-debugsource

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