An update for kernel is now available for openEuler-20.03-LTS-SP3 Security Advisory openeuler-security@openeuler.org openEuler security committee openEuler-SA-2023-1584 Final 1.0 1.0 2023-09-02 Initial 2023-09-02 2023-09-02 openEuler SA Tool V1.0 2023-09-02 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): A hash collision flaw was found in the IPv6 connection lookup table in the Linux kernel’s IPv6 functionality when a user makes a new kind of SYN flood attack. A user located in the local network or with a high bandwidth connection can increase the CPU usage of the server that accepts IPV6 connections up to 95%.(CVE-2023-1206) A buffer overrun vulnerability was found in the netback driver in Xen due to an unusual split packet. This flaw allows an unprivileged guest to cause a denial of service (DoS) of the host by sending network packets to the backend, causing the backend to crash.(CVE-2023-34319) An issue was discovered in l2cap_sock_release in net/bluetooth/l2cap_sock.c in the Linux kernel before 6.4.10. There is a use-after-free because the children of an sk are mishandled.(CVE-2023-40283) A flaw was found in the Linux kernel's TUN/TAP functionality. This issue could allow a local user to bypass network filters and gain unauthorized access to some resources. The original patches fixing CVE-2023-1076 are incorrect or incomplete. The problem is that the following upstream commits - a096ccca6e50 ("tun: tun_chr_open(): correctly initialize socket uid"), - 66b2c338adce ("tap: tap_open(): correctly initialize socket uid"), pass "inode->i_uid" to sock_init_data_uid() as the last parameter and that turns out to not be accurate.(CVE-2023-4194) A NULL pointer dereference flaw was found in dbFree in fs/jfs/jfs_dmap.c in the journaling file system (JFS) in the Linux Kernel. This issue may allow a local attacker to crash the system due to a missing sanity check.(CVE-2023-4385) A NULL pointer dereference flaw was found in vmxnet3_rq_cleanup in drivers/net/vmxnet3/vmxnet3_drv.c in the networking sub-component in vmxnet3 in the Linux Kernel. This issue may allow a local attacker with normal user privilege to cause a denial of service due to a missing sanity check during cleanup.(CVE-2023-4459) 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 high. 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. High kernel https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1584 https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2023-1206 https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2023-34319 https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2023-40283 https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2023-4194 https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2023-4385 https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2023-4459 https://nvd.nist.gov/vuln/detail/CVE-2023-1206 https://nvd.nist.gov/vuln/detail/CVE-2023-34319 https://nvd.nist.gov/vuln/detail/CVE-2023-40283 https://nvd.nist.gov/vuln/detail/CVE-2023-4194 https://nvd.nist.gov/vuln/detail/CVE-2023-4385 https://nvd.nist.gov/vuln/detail/CVE-2023-4459 openEuler-20.03-LTS-SP3 kernel-devel-4.19.90-2308.5.0.0216.oe1.aarch64.rpm python2-perf-4.19.90-2308.5.0.0216.oe1.aarch64.rpm perf-4.19.90-2308.5.0.0216.oe1.aarch64.rpm kernel-4.19.90-2308.5.0.0216.oe1.aarch64.rpm bpftool-4.19.90-2308.5.0.0216.oe1.aarch64.rpm python3-perf-4.19.90-2308.5.0.0216.oe1.aarch64.rpm kernel-debuginfo-4.19.90-2308.5.0.0216.oe1.aarch64.rpm bpftool-debuginfo-4.19.90-2308.5.0.0216.oe1.aarch64.rpm kernel-tools-4.19.90-2308.5.0.0216.oe1.aarch64.rpm kernel-tools-debuginfo-4.19.90-2308.5.0.0216.oe1.aarch64.rpm kernel-debugsource-4.19.90-2308.5.0.0216.oe1.aarch64.rpm kernel-source-4.19.90-2308.5.0.0216.oe1.aarch64.rpm perf-debuginfo-4.19.90-2308.5.0.0216.oe1.aarch64.rpm python2-perf-debuginfo-4.19.90-2308.5.0.0216.oe1.aarch64.rpm python3-perf-debuginfo-4.19.90-2308.5.0.0216.oe1.aarch64.rpm kernel-tools-devel-4.19.90-2308.5.0.0216.oe1.aarch64.rpm kernel-4.19.90-2308.5.0.0216.oe1.src.rpm kernel-tools-4.19.90-2308.5.0.0216.oe1.x86_64.rpm bpftool-4.19.90-2308.5.0.0216.oe1.x86_64.rpm python3-perf-debuginfo-4.19.90-2308.5.0.0216.oe1.x86_64.rpm bpftool-debuginfo-4.19.90-2308.5.0.0216.oe1.x86_64.rpm kernel-debuginfo-4.19.90-2308.5.0.0216.oe1.x86_64.rpm perf-debuginfo-4.19.90-2308.5.0.0216.oe1.x86_64.rpm perf-4.19.90-2308.5.0.0216.oe1.x86_64.rpm python3-perf-4.19.90-2308.5.0.0216.oe1.x86_64.rpm python2-perf-debuginfo-4.19.90-2308.5.0.0216.oe1.x86_64.rpm kernel-debugsource-4.19.90-2308.5.0.0216.oe1.x86_64.rpm kernel-source-4.19.90-2308.5.0.0216.oe1.x86_64.rpm kernel-4.19.90-2308.5.0.0216.oe1.x86_64.rpm kernel-devel-4.19.90-2308.5.0.0216.oe1.x86_64.rpm kernel-tools-devel-4.19.90-2308.5.0.0216.oe1.x86_64.rpm kernel-tools-debuginfo-4.19.90-2308.5.0.0216.oe1.x86_64.rpm python2-perf-4.19.90-2308.5.0.0216.oe1.x86_64.rpm A hash collision flaw was found in the IPv6 connection lookup table in the Linux kernel’s IPv6 functionality when a user makes a new kind of SYN flood attack. A user located in the local network or with a high bandwidth connection can increase the CPU usage of the server that accepts IPV6 connections up to 95%. 2023-09-02 CVE-2023-1206 openEuler-20.03-LTS-SP3 Medium 5.7 AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H kernel security update 2023-09-02 https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1584 A buffer overrun vulnerability was found in the netback driver in Xen due to an unusual split packet. This flaw allows an unprivileged guest to cause a denial of service (DoS) of the host by sending network packets to the backend, causing the backend to crash. 2023-09-02 CVE-2023-34319 openEuler-20.03-LTS-SP3 Medium 5.5 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H kernel security update 2023-09-02 https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1584 An issue was discovered in l2cap_sock_release in net/bluetooth/l2cap_sock.c in the Linux kernel before 6.4.10. There is a use-after-free because the children of an sk are mishandled. 2023-09-02 CVE-2023-40283 openEuler-20.03-LTS-SP3 High 7.8 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H kernel security update 2023-09-02 https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1584 A flaw was found in the Linux kernel s TUN/TAP functionality. This issue could allow a local user to bypass network filters and gain unauthorized access to some resources. The original patches fixing CVE-2023-1076 are incorrect or incomplete. The problem is that the following upstream commits - a096ccca6e50 ( tun: tun_chr_open(): correctly initialize socket uid ), - 66b2c338adce ( tap: tap_open(): correctly initialize socket uid ), pass inode->i_uid to sock_init_data_uid() as the last parameter and that turns out to not be accurate. 2023-09-02 CVE-2023-4194 openEuler-20.03-LTS-SP3 Medium 5.5 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N kernel security update 2023-09-02 https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1584 A NULL pointer dereference flaw was found in dbFree in fs/jfs/jfs_dmap.c in the journaling file system (JFS) in the Linux Kernel. This issue may allow a local attacker to crash the system due to a missing sanity check. 2023-09-02 CVE-2023-4385 openEuler-20.03-LTS-SP3 Medium 5.5 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H kernel security update 2023-09-02 https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1584 A NULL pointer dereference flaw was found in vmxnet3_rq_cleanup in drivers/net/vmxnet3/vmxnet3_drv.c in the networking sub-component in vmxnet3 in the Linux Kernel. This issue may allow a local attacker with normal user privilege to cause a denial of service due to a missing sanity check during cleanup. 2023-09-02 CVE-2023-4459 openEuler-20.03-LTS-SP3 Medium 5.5 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H kernel security update 2023-09-02 https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1584