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SUSE-SU-2021:2020-1 Not scored

Security update for the Linux Kernel (Live Patch 24 for SLE 15 SP1)

This update for the Linux Kernel 4.12.14-197_89 fixes several issues. The following issues were fixed: - CVE-2021-33200: Enforcing incorrect limits for pointer arithmetic operations by the BPF verifier could be abused to perform out-of-bounds reads and writes in kernel memory (bsc#1186484). - CVE-2021-33034: Fixed a use-after-free when destroying an hci_chan. This could lead to writing an arbitrary values (bsc#1186111). - CVE-2021-23134: A Use After Free vulnerability in nfc sockets allowed local attackers to elevate their privileges (bnc#1186060). - CVE-2021-32399: Fixed a race condition when removing the HCI controller (bnc#1184611). - Fixed a data loss/data corruption that occurs if there is a write error on an md/raid array (bsc#1185680).

Exploit probability Not scored
Published June 18, 2021
Required by Not available
Last source change February 4, 2026

02 / AFFECTED SOFTWARE

Affected packages

SUSE:Linux Enterprise Live Patching 12 SP4 kgraft-patch-SLE12-SP4_Update_20
SUSE:Linux Enterprise Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_18
SUSE:Linux Enterprise Live Patching 15 SP1 kernel-livepatch-SLE15-SP1_Update_24

03 / CONNECTIONS

Connected vulnerabilities

04 / EVIDENCE

Source records

Open Source Vulnerabilities SUSE-SU-2021:2020-1

This update for the Linux Kernel 4.12.14-197_89 fixes several issues. The following issues were fixed: - CVE-2021-33200: Enforcing incorrect limits for pointer arithmetic operations by the BPF verifier could be abused to perform out-of-bounds reads and writes in kernel memory (bsc#1186484). - CVE-2021-33034: Fixed a use-after-free when destroying an hci_chan. This could lead to writing an arbitrary values (bsc#1186111). - CVE-2021-23134: A Use After Free vulnerability in nfc sockets allowed local attackers to elevate their privileges (bnc#1186060). - CVE-2021-32399: Fixed a race condition when removing the HCI controller (bnc#1184611). - Fixed a data loss/data corruption that occurs if there is a write error on an md/raid array (bsc#1185680).

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05 / REFERENCES

Further evidence