An update for kernel is now available for openEuler-20.03-LTS-SP3 Security Advisory openeuler-security@openeuler.org openEuler security committee openEuler-SA-2023-1470 Final 1.0 1.0 2023-08-06 Initial 2023-08-06 2023-08-06 openEuler SA Tool V1.0 2023-08-06 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): In multiple functions of binder.c, there is a possible memory corruption due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. (CVE-2023-21255) A use-after-free vulnerability in the Linux kernel's net/sched: cls_u32 component can be exploited to achieve local privilege escalation. If tcf_change_indev() fails, u32_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability. We recommend upgrading past commit 04c55383fa5689357bcdd2c8036725a55ed632bc. (CVE-2023-3609) An out-of-bounds write vulnerability in the Linux kernel's net/sched: sch_qfq component can be exploited to achieve local privilege escalation. The qfq_change_agg() function in net/sched/sch_qfq.c allows an out-of-bounds write because lmax is updated according to packet sizes without bounds checks. We recommend upgrading past commit 3e337087c3b5805fe0b8a46ba622a962880b5d64. (CVE-2023-3611) A use-after-free vulnerability in the Linux kernel's net/sched: cls_fw component can be exploited to achieve local privilege escalation. If tcf_change_indev() fails, fw_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability. We recommend upgrading past commit 0323bce598eea038714f941ce2b22541c46d488f. (CVE-2023-3776) An out-of-bounds memory access flaw was found in the Linux kernel’s TUN/TAP device driver functionality in how a user generates a malicious (too big) networking packet when napi frags is enabled. This flaw allows a local user to crash or potentially escalate their privileges on the system.(CVE-2023-3812) 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-2023-1470 https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2023-21255 https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2023-3609 https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2023-3611 https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2023-3776 https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2023-3812 https://nvd.nist.gov/vuln/detail/CVE-2023-21255 https://nvd.nist.gov/vuln/detail/CVE-2023-3609 https://nvd.nist.gov/vuln/detail/CVE-2023-3611 https://nvd.nist.gov/vuln/detail/CVE-2023-3776 https://nvd.nist.gov/vuln/detail/CVE-2023-3812 openEuler-20.03-LTS-SP3 bpftool-4.19.90-2308.1.0.0212.oe1.aarch64.rpm perf-debuginfo-4.19.90-2308.1.0.0212.oe1.aarch64.rpm python2-perf-4.19.90-2308.1.0.0212.oe1.aarch64.rpm kernel-devel-4.19.90-2308.1.0.0212.oe1.aarch64.rpm python3-perf-4.19.90-2308.1.0.0212.oe1.aarch64.rpm kernel-debugsource-4.19.90-2308.1.0.0212.oe1.aarch64.rpm python2-perf-debuginfo-4.19.90-2308.1.0.0212.oe1.aarch64.rpm kernel-debuginfo-4.19.90-2308.1.0.0212.oe1.aarch64.rpm kernel-source-4.19.90-2308.1.0.0212.oe1.aarch64.rpm kernel-4.19.90-2308.1.0.0212.oe1.aarch64.rpm kernel-tools-debuginfo-4.19.90-2308.1.0.0212.oe1.aarch64.rpm perf-4.19.90-2308.1.0.0212.oe1.aarch64.rpm python3-perf-debuginfo-4.19.90-2308.1.0.0212.oe1.aarch64.rpm bpftool-debuginfo-4.19.90-2308.1.0.0212.oe1.aarch64.rpm kernel-tools-devel-4.19.90-2308.1.0.0212.oe1.aarch64.rpm kernel-tools-4.19.90-2308.1.0.0212.oe1.aarch64.rpm kernel-4.19.90-2308.1.0.0212.oe1.src.rpm perf-debuginfo-4.19.90-2308.1.0.0212.oe1.x86_64.rpm kernel-tools-4.19.90-2308.1.0.0212.oe1.x86_64.rpm python2-perf-debuginfo-4.19.90-2308.1.0.0212.oe1.x86_64.rpm perf-4.19.90-2308.1.0.0212.oe1.x86_64.rpm kernel-devel-4.19.90-2308.1.0.0212.oe1.x86_64.rpm bpftool-4.19.90-2308.1.0.0212.oe1.x86_64.rpm python2-perf-4.19.90-2308.1.0.0212.oe1.x86_64.rpm kernel-tools-debuginfo-4.19.90-2308.1.0.0212.oe1.x86_64.rpm python3-perf-debuginfo-4.19.90-2308.1.0.0212.oe1.x86_64.rpm bpftool-debuginfo-4.19.90-2308.1.0.0212.oe1.x86_64.rpm kernel-4.19.90-2308.1.0.0212.oe1.x86_64.rpm kernel-debuginfo-4.19.90-2308.1.0.0212.oe1.x86_64.rpm kernel-source-4.19.90-2308.1.0.0212.oe1.x86_64.rpm kernel-tools-devel-4.19.90-2308.1.0.0212.oe1.x86_64.rpm kernel-debugsource-4.19.90-2308.1.0.0212.oe1.x86_64.rpm python3-perf-4.19.90-2308.1.0.0212.oe1.x86_64.rpm In multiple functions of binder.c, there is a possible memory corruption due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. 2023-08-06 CVE-2023-21255 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 2023-08-06 https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1470 A use-after-free vulnerability in the Linux kernel s net/sched: cls_u32 component can be exploited to achieve local privilege escalation.If tcf_change_indev() fails, u32_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability.We recommend upgrading past commit 04c55383fa5689357bcdd2c8036725a55ed632bc. 2023-08-06 CVE-2023-3609 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 2023-08-06 https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1470 An out-of-bounds write vulnerability in the Linux kernel s net/sched: sch_qfq component can be exploited to achieve local privilege escalation.The qfq_change_agg() function in net/sched/sch_qfq.c allows an out-of-bounds write because lmax is updated according to packet sizes without bounds checks.We recommend upgrading past commit 3e337087c3b5805fe0b8a46ba622a962880b5d64. 2023-08-06 CVE-2023-3611 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 2023-08-06 https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1470 A use-after-free vulnerability in the Linux kernel s net/sched: cls_fw component can be exploited to achieve local privilege escalation.If tcf_change_indev() fails, fw_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability.We recommend upgrading past commit 0323bce598eea038714f941ce2b22541c46d488f. 2023-08-06 CVE-2023-3776 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 2023-08-06 https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1470 An out-of-bounds memory access flaw was found in the Linux kernel’s TUN/TAP device driver functionality in how a user generates a malicious (too big) networking packet when napi frags is enabled. This flaw allows a local user to crash or potentially escalate their privileges on the system. 2023-08-06 CVE-2023-3812 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 2023-08-06 https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1470