SUSE-SU-2021:1733-1

Vulnerability from csaf_suse - Published: 2021-05-25 10:28 - Updated: 2026-09-20 13:57
Summary
Security update for the Linux Kernel (Live Patch 17 for SLE 12 SP5)
Severity
Important
Notes
Title of the patch: Security update for the Linux Kernel (Live Patch 17 for SLE 12 SP5)
Description of the patch: This update for the Linux Kernel 4.12.14-122_66 fixes several issues. The following security issues were fixed: - CVE-2020-36322: Fixed an issue inside the FUSE filesystem implementation where fuse_do_getattr() calls make_bad_inode() in inappropriate situations, could have caused a system crash. NOTE: the original fix for this vulnerability was incomplete, and its incompleteness is tracked as CVE-2021-28950 (bsc#1184952). - CVE-2021-3444: Fixed incorrect mod32 BPF verifier truncation (bsc#1184171). - CVE-2021-3444: Fixed incorrect mod32 BPF verifier truncation (bsc#1184171).
Patchnames: SUSE-2021-1733,SUSE-SLE-Live-Patching-12-SP5-2021-1733
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
CVE-2020-36322
7.7 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Affected products
Product Identifier Version Remediation
Unresolved product id: SUSE Linux Enterprise Live Patching 12 SP5:kgraft-patch-4_12_14-122_66-default-0:2-2.2.ppc64le —
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Live Patching 12 SP5:kgraft-patch-4_12_14-122_66-default-0:2-2.2.s390x —
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Live Patching 12 SP5:kgraft-patch-4_12_14-122_66-default-0:2-2.2.x86_64 —
Vendor Fix
Threats
Impact important
CVE-2021-3444
7 (High)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Recommended 3 products, the same list as for CVE-2020-36322
Threats
Impact important
References
To clipboard 

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          "text": "The bpf verifier in the Linux kernel did not properly handle mod32 destination register truncation when the source register was known to be 0. A local attacker with the ability to load bpf programs could use this gain out-of-bounds reads in kernel memory leading to information disclosure (kernel memory), and possibly out-of-bounds writes that could potentially lead to code execution. This issue was addressed in the upstream kernel in commit 9b00f1b78809 (\"bpf: Fix truncation handling for mod32 dst reg wrt zero\") and in Linux stable kernels 5.11.2, 5.10.19, and 5.4.101.",
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    }
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}



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