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openSUSE Leap 15.2: Kernel Important Update CVE-2021-33200

opensuse
Calendar Grey September 26, 2025
Dist Opensuse Esm H88
A critical patch for Fedora has been released to resolve various security issues. Prompt updates are advised to ensure system protection.
An update that solves 12 vulnerabilities and has 23 fixes is now available.

Description

The openSUSE Leap 15.2 kernel was updated to receive various security an=

d

bugfixes.

The following security bugs were fixed:

- CVE-2021-33200: Enforcing incorrect limits for pointer arithmetic

operations by the BPF verifier could be abused to perform out-of-bound=

s

reads and writes in kernel memory (bsc#1186484).

- CVE-2021-33034: Fixed a use-after-free when destroying an hci=5Fchan. =

This

could lead to writing an arbitrary values. (bsc#1186111)

- CVE-2020-26139: Fixed a denial-of-service when an Access Point (AP)

forwards EAPOL frames to other clients even though the sender has not

yet successfully authenticated to the AP. (bnc#1186062)

- CVE-2021-23134: A Use After Free vulnerability in nfc sockets allowed

local attackers to elevate their privileges. (bnc#1186060)

- CVE-2021-3491: Fixed a potential heap overflow in mem=5Frw(). This

vulnerability is related to the PROVIDE=5FBUFFERS operation, which all=

owed

the...

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Topics%20covered

Topics Covered

security advisory important heap overflow kernel network exploit OpenSUSE

Patch

Patch Instructions:

To install this openSUSE Security Update use the SUSE recommended instal=

lation methods

like YaST online=5Fupdate or "zypper patch".

Alternatively you can run the command listed for your product:

- openSUSE Leap 15.2:

zypper in -t patch openSUSE-2021-843=3D1

Package List

- openSUSE Leap 15.2 (noarch):

kernel-devel-5.3.18-lp152.78.1

kernel-docs-5.3.18-lp152.78.1

kernel-docs-html-5.3.18-lp152.78.1

kernel-macros-5.3.18-lp152.78.1

kernel-source-5.3.18-lp152.78.1

kernel-source-vanilla-5.3.18-lp152.78.1

- openSUSE Leap 15.2 (x86=5F64):

kernel-debug-5.3.18-lp152.78.1

kernel-debug-debuginfo-5.3.18-lp152.78.1

kernel-debug-debugsource-5.3.18-lp152.78.1

kernel-debug-devel-5.3.18-lp152.78.1

kernel-debug-devel-debuginfo-5.3.18-lp152.78.1

kernel-default-5.3.18-lp152.78.1

kernel-default-base-5.3.18-lp152.78.1.lp152.8.34.1

kernel-default-base-rebuild-5.3.18-lp152.78.1.lp152.8.34.1

kernel-default-debuginfo-5.3.18-lp152.78.1

kernel-default-debugsource-5.3.18-lp152.78.1

kernel-default-devel-5.3.18-lp152.78.1

kernel-default-devel-debuginfo-5.3.18-lp152.78.1

kernel-kvmsmall-5.3.18-lp152.78.1

kernel-kvmsmall-debuginfo-5.3.18-lp152.78.1

kernel-kvmsmall-debugsource-5.3.18-lp152.78.1

kernel-kvmsmall-devel-5.3.18-lp152.78.1

kernel-kvmsmall-devel-debuginfo-5.3.18-lp152.78.1

kernel-obs-build-5.3.18-lp152...

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References

https://www.suse.com/security/cve/CVE-2020-24586.html

https://www.suse.com/security/cve/CVE-2020-24587.html

https://www.suse.com/security/cve/CVE-2020-24588.html

https://www.suse.com/security/cve/CVE-2020-26139.html

https://www.suse.com/security/cve/CVE-2020-26141.html

https://www.suse.com/security/cve/CVE-2020-26145.html

https://www.suse.com/security/cve/CVE-2020-26147.html

https://www.suse.com/security/cve/CVE-2021-23134.html

https://www.suse.com/security/cve/CVE-2021-32399.html

https://www.suse.com/security/cve/CVE-2021-33034.html

https://www.suse.com/security/cve/CVE-2021-33200.html

https://www.suse.com/security/cve/CVE-2021-3491.html

https://bugzilla.suse.com/1087082

https://bugzilla.suse.com/1133021

https://bugzilla.suse.com/1152457

https://bugzilla.suse.com/1152489

https://bugzilla.suse.com/1155518

https://bugzilla.suse.com/1156395

https://bugzilla.suse.com/1164648

https://bugzilla.suse.com/1177666

https://bugzilla.suse.com/1178418

https://bugzilla.suse.com/1179519

https://bugzilla.suse.com/1179827

ht...

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Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: openSUSE-SU-2021:0843-1
Rating: important
Affected Products: openSUSE Leap 15.2 =5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F= =5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F= =5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F= =5F=5F=5F le.

Topics%20covered

Topics Covered

security advisory important heap overflow kernel network exploit OpenSUSE

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