An update for kernel is now available for openEuler-22.03-LTS Security Advisory openeuler-security@openeuler.org openEuler security committee openEuler-SA-2023-1152 Final 1.0 1.0 2023-03-10 Initial 2023-03-10 2023-03-10 openEuler SA Tool V1.0 2023-03-10 kernel security update An update for kernel is now available for openEuler-22.03-LTS. The Linux Kernel, the operating system core itself. Security Fix(es): Due to a vulnerability in the io_uring subsystem, it is possible to leak kernel memory information to the user process. timens_install calls current_is_single_threaded to determine if the current process is single-threaded, but this call does not consider io_uring's io_worker threads, thus it is possible to insert a time namespace's vvar page to process's memory space via a page fault. When this time namespace is destroyed, the vvar page is also freed, but not removed from the process' memory, and a next page allocated by the kernel will be still available from the user-space process and can leak memory contents via this (read-only) use-after-free vulnerability. We recommend upgrading past version 5.10.161 or commit 788d0824269bef539fe31a785b1517882eafed93 https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/io_uring(CVE-2023-23586) In the Linux kernel 6.0.8, there is an out-of-bounds read in ntfs_attr_find in fs/ntfs/attrib.c.(CVE-2023-26607) An update for kernel is now available for openEuler-22.03-LTS. 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-2023-1152 https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2023-23586 https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2023-26607 https://nvd.nist.gov/vuln/detail/CVE-2023-23586 https://nvd.nist.gov/vuln/detail/CVE-2023-26607 openEuler-22.03-LTS kernel-headers-5.10.0-60.84.0.108.oe2203.aarch64.rpm bpftool-5.10.0-60.84.0.108.oe2203.aarch64.rpm kernel-tools-debuginfo-5.10.0-60.84.0.108.oe2203.aarch64.rpm kernel-tools-devel-5.10.0-60.84.0.108.oe2203.aarch64.rpm perf-debuginfo-5.10.0-60.84.0.108.oe2203.aarch64.rpm kernel-5.10.0-60.84.0.108.oe2203.aarch64.rpm python3-perf-debuginfo-5.10.0-60.84.0.108.oe2203.aarch64.rpm perf-5.10.0-60.84.0.108.oe2203.aarch64.rpm kernel-devel-5.10.0-60.84.0.108.oe2203.aarch64.rpm kernel-debugsource-5.10.0-60.84.0.108.oe2203.aarch64.rpm kernel-source-5.10.0-60.84.0.108.oe2203.aarch64.rpm kernel-tools-5.10.0-60.84.0.108.oe2203.aarch64.rpm bpftool-debuginfo-5.10.0-60.84.0.108.oe2203.aarch64.rpm python3-perf-5.10.0-60.84.0.108.oe2203.aarch64.rpm kernel-debuginfo-5.10.0-60.84.0.108.oe2203.aarch64.rpm kernel-5.10.0-60.84.0.108.oe2203.src.rpm kernel-tools-devel-5.10.0-60.84.0.108.oe2203.x86_64.rpm bpftool-5.10.0-60.84.0.108.oe2203.x86_64.rpm kernel-devel-5.10.0-60.84.0.108.oe2203.x86_64.rpm perf-debuginfo-5.10.0-60.84.0.108.oe2203.x86_64.rpm kernel-5.10.0-60.84.0.108.oe2203.x86_64.rpm kernel-debuginfo-5.10.0-60.84.0.108.oe2203.x86_64.rpm python3-perf-5.10.0-60.84.0.108.oe2203.x86_64.rpm python3-perf-debuginfo-5.10.0-60.84.0.108.oe2203.x86_64.rpm kernel-debugsource-5.10.0-60.84.0.108.oe2203.x86_64.rpm bpftool-debuginfo-5.10.0-60.84.0.108.oe2203.x86_64.rpm kernel-source-5.10.0-60.84.0.108.oe2203.x86_64.rpm perf-5.10.0-60.84.0.108.oe2203.x86_64.rpm kernel-tools-debuginfo-5.10.0-60.84.0.108.oe2203.x86_64.rpm kernel-tools-5.10.0-60.84.0.108.oe2203.x86_64.rpm kernel-headers-5.10.0-60.84.0.108.oe2203.x86_64.rpm Due to a vulnerability in the io_uring subsystem, it is possible to leak kernel memory information to the user process. timens_install calls current_is_single_threaded to determine if the current process is single-threaded, but this call does not consider io_uring's io_worker threads, thus it is possible to insert a time namespace's vvar page to process's memory space via a page fault. When this time namespace is destroyed, the vvar page is also freed, but not removed from the process' memory, and a next page allocated by the kernel will be still available from the user-space process and can leak memory contents via this (read-only) use-after-free vulnerability. We recommend upgrading past version 5.10.161 or commit 788d0824269bef539fe31a785b1517882eafed93 https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/io_uring 2023-03-10 CVE-2023-23586 openEuler-22.03-LTS Medium 5.5 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N kernel security update 2023-03-10 https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1152 In the Linux kernel 6.0.8, there is an out-of-bounds read in ntfs_attr_find in fs/ntfs/attrib.c. 2023-03-10 CVE-2023-26607 openEuler-22.03-LTS High 7.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H kernel security update 2023-03-10 https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1152