An update for kernel is now available for openEuler-20.03-LTS-SP4 Security Advisory openeuler-security@openeuler.org openEuler security committee openEuler-SA-2025-2271 Final 1.0 1.0 2025-09-12 Initial 2025-09-12 2025-09-12 openEuler SA Tool V1.0 2025-09-12 kernel security update An update for kernel is now available for openEuler-20.03-LTS-SP4 The Linux Kernel, the operating system core itself. Security Fix(es): In the Linux kernel, the following vulnerability has been resolved: do_change_type() now refuses to operate on unmounted mounts or mounts not belonging to the caller's mount namespace. This change aligns permission checking with the rest of mount(2).(CVE-2025-38498) In the Linux kernel, the following vulnerability has been resolved: ftrace: Also allocate and copy hash for reading of filter files Currently the reader of set_ftrace_filter and set_ftrace_notrace just adds the pointer to the global tracer hash to its iterator. Unlike the writer that allocates a copy of the hash, the reader keeps the pointer to the filter hashes. This is problematic because this pointer is static across function calls that release the locks that can update the global tracer hashes. This can cause UAF and similar bugs. Allocate and copy the hash for reading the filter files like it is done for the writers. This not only fixes UAF bugs, but also makes the code a bit simpler as it doesn't have to differentiate when to free the iterator's hash between writers and readers.(CVE-2025-39689) An update for kernel is now available for openEuler-20.03-LTS-SP4. 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/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-2271 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2025-38498 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2025-39689 https://nvd.nist.gov/vuln/detail/CVE-2025-38498 https://nvd.nist.gov/vuln/detail/CVE-2025-39689 openEuler-20.03-LTS-SP4 bpftool-4.19.90-2509.4.0.0343.oe2003sp4.aarch64.rpm bpftool-debuginfo-4.19.90-2509.4.0.0343.oe2003sp4.aarch64.rpm kernel-4.19.90-2509.4.0.0343.oe2003sp4.aarch64.rpm kernel-debuginfo-4.19.90-2509.4.0.0343.oe2003sp4.aarch64.rpm kernel-debugsource-4.19.90-2509.4.0.0343.oe2003sp4.aarch64.rpm kernel-devel-4.19.90-2509.4.0.0343.oe2003sp4.aarch64.rpm kernel-source-4.19.90-2509.4.0.0343.oe2003sp4.aarch64.rpm kernel-tools-4.19.90-2509.4.0.0343.oe2003sp4.aarch64.rpm kernel-tools-debuginfo-4.19.90-2509.4.0.0343.oe2003sp4.aarch64.rpm kernel-tools-devel-4.19.90-2509.4.0.0343.oe2003sp4.aarch64.rpm perf-4.19.90-2509.4.0.0343.oe2003sp4.aarch64.rpm perf-debuginfo-4.19.90-2509.4.0.0343.oe2003sp4.aarch64.rpm python2-perf-4.19.90-2509.4.0.0343.oe2003sp4.aarch64.rpm python2-perf-debuginfo-4.19.90-2509.4.0.0343.oe2003sp4.aarch64.rpm python3-perf-4.19.90-2509.4.0.0343.oe2003sp4.aarch64.rpm python3-perf-debuginfo-4.19.90-2509.4.0.0343.oe2003sp4.aarch64.rpm bpftool-4.19.90-2509.4.0.0343.oe2003sp4.x86_64.rpm bpftool-debuginfo-4.19.90-2509.4.0.0343.oe2003sp4.x86_64.rpm kernel-4.19.90-2509.4.0.0343.oe2003sp4.x86_64.rpm kernel-debuginfo-4.19.90-2509.4.0.0343.oe2003sp4.x86_64.rpm kernel-debugsource-4.19.90-2509.4.0.0343.oe2003sp4.x86_64.rpm kernel-devel-4.19.90-2509.4.0.0343.oe2003sp4.x86_64.rpm kernel-source-4.19.90-2509.4.0.0343.oe2003sp4.x86_64.rpm kernel-tools-4.19.90-2509.4.0.0343.oe2003sp4.x86_64.rpm kernel-tools-debuginfo-4.19.90-2509.4.0.0343.oe2003sp4.x86_64.rpm kernel-tools-devel-4.19.90-2509.4.0.0343.oe2003sp4.x86_64.rpm perf-4.19.90-2509.4.0.0343.oe2003sp4.x86_64.rpm perf-debuginfo-4.19.90-2509.4.0.0343.oe2003sp4.x86_64.rpm python2-perf-4.19.90-2509.4.0.0343.oe2003sp4.x86_64.rpm python2-perf-debuginfo-4.19.90-2509.4.0.0343.oe2003sp4.x86_64.rpm python3-perf-4.19.90-2509.4.0.0343.oe2003sp4.x86_64.rpm python3-perf-debuginfo-4.19.90-2509.4.0.0343.oe2003sp4.x86_64.rpm kernel-4.19.90-2509.4.0.0343.oe2003sp4.src.rpm In the Linux kernel, the following vulnerability has been resolved: do_change_type() now refuses to operate on unmounted mounts or mounts not belonging to the caller's mount namespace. This change aligns permission checking with the rest of mount(2). 2025-09-12 CVE-2025-38498 openEuler-20.03-LTS-SP4 High 7.3 AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H kernel security update 2025-09-12 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-2271 In the Linux kernel, the following vulnerability has been resolved: ftrace: Also allocate and copy hash for reading of filter files Currently the reader of set_ftrace_filter and set_ftrace_notrace just adds the pointer to the global tracer hash to its iterator. Unlike the writer that allocates a copy of the hash, the reader keeps the pointer to the filter hashes. This is problematic because this pointer is static across function calls that release the locks that can update the global tracer hashes. This can cause UAF and similar bugs. Allocate and copy the hash for reading the filter files like it is done for the writers. This not only fixes UAF bugs, but also makes the code a bit simpler as it doesn't have to differentiate when to free the iterator's hash between writers and readers. 2025-09-12 CVE-2025-39689 openEuler-20.03-LTS-SP4 High 7.0 AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H kernel security update 2025-09-12 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-2271