An update for kernel is now available for openEuler-20.03-LTS-SP3 Security Advisory openeuler-security@openeuler.org openEuler security committee openEuler-SA-2022-2144 Final 1.0 1.0 2022-12-24 Initial 2022-12-24 2022-12-24 openEuler SA Tool V1.0 2022-12-24 kernel security update An update for kernel is now available for openEuler-20.03-LTS-SP3. The Linux Kernel, the operating system core itself. Security Fix(es): Guests can trigger NIC interface reset/abort/crash via netback It is possible for a guest to trigger a NIC interface reset/abort/crash in a Linux based network backend by sending certain kinds of packets. It appears to be an (unwritten?) assumption in the rest of the Linux network stack that packet protocol headers are all contained within the linear section of the SKB and some NICs behave badly if this is not the case. This has been reported to occur with Cisco (enic) and Broadcom NetXtrem II BCM5780 (bnx2x) though it may be an issue with other NICs/drivers as well. In case the frontend is sending requests with split headers, netback will forward those violating above mentioned assumption to the networking core, resulting in said misbehavior.(CVE-2022-3643) An update for kernel is now available for openEuler-20.03-LTS-SP3. openEuler Security has rated this update as having a security impact of critical. A Common Vunlnerability Scoring System(CVSS)base score,which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section. Critical kernel https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2022-2144 https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2022-3643 https://nvd.nist.gov/vuln/detail/CVE-2022-3643 openEuler-20.03-LTS-SP3 kernel-debuginfo-4.19.90-2212.3.0.0182.oe1.aarch64.rpm bpftool-debuginfo-4.19.90-2212.3.0.0182.oe1.aarch64.rpm perf-debuginfo-4.19.90-2212.3.0.0182.oe1.aarch64.rpm kernel-source-4.19.90-2212.3.0.0182.oe1.aarch64.rpm kernel-debugsource-4.19.90-2212.3.0.0182.oe1.aarch64.rpm bpftool-4.19.90-2212.3.0.0182.oe1.aarch64.rpm python3-perf-4.19.90-2212.3.0.0182.oe1.aarch64.rpm python2-perf-debuginfo-4.19.90-2212.3.0.0182.oe1.aarch64.rpm perf-4.19.90-2212.3.0.0182.oe1.aarch64.rpm kernel-devel-4.19.90-2212.3.0.0182.oe1.aarch64.rpm kernel-tools-4.19.90-2212.3.0.0182.oe1.aarch64.rpm python2-perf-4.19.90-2212.3.0.0182.oe1.aarch64.rpm python3-perf-debuginfo-4.19.90-2212.3.0.0182.oe1.aarch64.rpm kernel-tools-debuginfo-4.19.90-2212.3.0.0182.oe1.aarch64.rpm kernel-tools-devel-4.19.90-2212.3.0.0182.oe1.aarch64.rpm kernel-4.19.90-2212.3.0.0182.oe1.aarch64.rpm kernel-4.19.90-2212.3.0.0182.oe1.src.rpm kernel-debuginfo-4.19.90-2212.3.0.0182.oe1.x86_64.rpm kernel-tools-4.19.90-2212.3.0.0182.oe1.x86_64.rpm kernel-4.19.90-2212.3.0.0182.oe1.x86_64.rpm bpftool-debuginfo-4.19.90-2212.3.0.0182.oe1.x86_64.rpm python2-perf-debuginfo-4.19.90-2212.3.0.0182.oe1.x86_64.rpm perf-4.19.90-2212.3.0.0182.oe1.x86_64.rpm kernel-debugsource-4.19.90-2212.3.0.0182.oe1.x86_64.rpm bpftool-4.19.90-2212.3.0.0182.oe1.x86_64.rpm python3-perf-4.19.90-2212.3.0.0182.oe1.x86_64.rpm kernel-devel-4.19.90-2212.3.0.0182.oe1.x86_64.rpm perf-debuginfo-4.19.90-2212.3.0.0182.oe1.x86_64.rpm python2-perf-4.19.90-2212.3.0.0182.oe1.x86_64.rpm python3-perf-debuginfo-4.19.90-2212.3.0.0182.oe1.x86_64.rpm kernel-tools-debuginfo-4.19.90-2212.3.0.0182.oe1.x86_64.rpm kernel-tools-devel-4.19.90-2212.3.0.0182.oe1.x86_64.rpm kernel-source-4.19.90-2212.3.0.0182.oe1.x86_64.rpm Guests can trigger NIC interface reset/abort/crash via netback It is possible for a guest to trigger a NIC interface reset/abort/crash in a Linux based network backend by sending certain kinds of packets. It appears to be an (unwritten?) assumption in the rest of the Linux network stack that packet protocol headers are all contained within the linear section of the SKB and some NICs behave badly if this is not the case. This has been reported to occur with Cisco (enic) and Broadcom NetXtrem II BCM5780 (bnx2x) though it may be an issue with other NICs/drivers as well. In case the frontend is sending requests with split headers, netback will forward those violating above mentioned assumption to the networking core, resulting in said misbehavior. 2022-12-24 CVE-2022-3643 openEuler-20.03-LTS-SP3 Critical 10.0 AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H kernel security update 2022-12-24 https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2022-2144