An update for kernel is now available for openEuler-22.03-LTS Security Advisory openeuler-security@openeuler.org openEuler security committee openEuler-SA-2023-1471 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-22.03-LTS. 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) (CVE-2023-2163) A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB server. The specific flaw exists within the handling of SMB2_TREE_CONNECT and SMB2_QUERY_INFO commands. The issue results from the lack of proper validation of a pointer prior to accessing it. An attacker can leverage this vulnerability to create a denial-of-service condition on the system.(CVE-2023-32248) VUL-0: CVE-2023-32255: kernel: Linux Kernel ksmbd Session Setup Memory Leak Denial-of-Service Vulnerability(CVE-2023-32255) A use-after-free flaw was found in vcs_read in drivers/tty/vt/vc_screen.c in vc_screen in the Linux Kernel. This flaw allows an attacker with local user access to cause a system crash or leak internal kernel information.(CVE-2023-3567) 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) A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. Flaw in the error handling of bound chains causes a use-after-free in the abort path of NFT_MSG_NEWRULE. The vulnerability requires CAP_NET_ADMIN to be triggered. We recommend upgrading past commit 4bedf9eee016286c835e3d8fa981ddece5338795. (CVE-2023-3610) 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 issue was discovered in the Linux kernel before 6.3.4. ksmbd has an out-of-bounds read in smb2_find_context_vals when create_context's name_len is larger than the tag length.(CVE-2023-38426) An issue was discovered in the Linux kernel before 6.3.4. fs/ksmbd/smb2pdu.c in ksmbd does not properly check the UserName value because it does not consider the address of security buffer, leading to an out-of-bounds read.(CVE-2023-38428) An update for kernel is now available for openEuler-22.03-LTS. 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-2023-1471 https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2023-21255 https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2023-2163 https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2023-32248 https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2023-32255 https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2023-3567 https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2023-3609 https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2023-3610 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://www.openeuler.org/en/security/cve/detail.html?id=CVE-2023-38426 https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2023-38428 https://nvd.nist.gov/vuln/detail/CVE-2023-21255 https://nvd.nist.gov/vuln/detail/CVE-2023-2163 https://nvd.nist.gov/vuln/detail/CVE-2023-32248 https://nvd.nist.gov/vuln/detail/CVE-2023-32255 https://nvd.nist.gov/vuln/detail/CVE-2023-3567 https://nvd.nist.gov/vuln/detail/CVE-2023-3609 https://nvd.nist.gov/vuln/detail/CVE-2023-3610 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 https://nvd.nist.gov/vuln/detail/CVE-2023-38426 https://nvd.nist.gov/vuln/detail/CVE-2023-38428 openEuler-22.03-LTS perf-debuginfo-5.10.0-60.105.0.132.oe2203.aarch64.rpm kernel-headers-5.10.0-60.105.0.132.oe2203.aarch64.rpm python3-perf-debuginfo-5.10.0-60.105.0.132.oe2203.aarch64.rpm bpftool-debuginfo-5.10.0-60.105.0.132.oe2203.aarch64.rpm kernel-devel-5.10.0-60.105.0.132.oe2203.aarch64.rpm kernel-source-5.10.0-60.105.0.132.oe2203.aarch64.rpm bpftool-5.10.0-60.105.0.132.oe2203.aarch64.rpm kernel-debuginfo-5.10.0-60.105.0.132.oe2203.aarch64.rpm kernel-5.10.0-60.105.0.132.oe2203.aarch64.rpm perf-5.10.0-60.105.0.132.oe2203.aarch64.rpm python3-perf-5.10.0-60.105.0.132.oe2203.aarch64.rpm kernel-debugsource-5.10.0-60.105.0.132.oe2203.aarch64.rpm kernel-tools-devel-5.10.0-60.105.0.132.oe2203.aarch64.rpm kernel-tools-debuginfo-5.10.0-60.105.0.132.oe2203.aarch64.rpm kernel-tools-5.10.0-60.105.0.132.oe2203.aarch64.rpm kernel-5.10.0-60.105.0.132.oe2203.src.rpm kernel-tools-devel-5.10.0-60.105.0.132.oe2203.x86_64.rpm python3-perf-5.10.0-60.105.0.132.oe2203.x86_64.rpm kernel-tools-5.10.0-60.105.0.132.oe2203.x86_64.rpm kernel-source-5.10.0-60.105.0.132.oe2203.x86_64.rpm kernel-devel-5.10.0-60.105.0.132.oe2203.x86_64.rpm kernel-5.10.0-60.105.0.132.oe2203.x86_64.rpm perf-5.10.0-60.105.0.132.oe2203.x86_64.rpm kernel-tools-debuginfo-5.10.0-60.105.0.132.oe2203.x86_64.rpm python3-perf-debuginfo-5.10.0-60.105.0.132.oe2203.x86_64.rpm kernel-debugsource-5.10.0-60.105.0.132.oe2203.x86_64.rpm bpftool-debuginfo-5.10.0-60.105.0.132.oe2203.x86_64.rpm kernel-debuginfo-5.10.0-60.105.0.132.oe2203.x86_64.rpm bpftool-5.10.0-60.105.0.132.oe2203.x86_64.rpm perf-debuginfo-5.10.0-60.105.0.132.oe2203.x86_64.rpm kernel-headers-5.10.0-60.105.0.132.oe2203.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-22.03-LTS 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-2023-1471 2023-08-06 CVE-2023-2163 openEuler-22.03-LTS Medium 6.3 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L kernel security update 2023-08-06 https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1471 A flaw was found in the Linux kernel s ksmbd, a high-performance in-kernel SMB server. The specific flaw exists within the handling of SMB2_TREE_CONNECT and SMB2_QUERY_INFO commands. The issue results from the lack of proper validation of a pointer prior to accessing it. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. 2023-08-06 CVE-2023-32248 openEuler-22.03-LTS High 7.5 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H kernel security update 2023-08-06 https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1471 VUL-0: CVE-2023-32255: kernel: Linux Kernel ksmbd Session Setup Memory Leak Denial-of-Service Vulnerability 2023-08-06 CVE-2023-32255 openEuler-22.03-LTS Medium 5.3 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L kernel security update 2023-08-06 https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1471 A use-after-free flaw was found in vcs_read in drivers/tty/vt/vc_screen.c in vc_screen in the Linux Kernel. This flaw allows an attacker with local user access to cause a system crash or leak internal kernel information. 2023-08-06 CVE-2023-3567 openEuler-22.03-LTS Medium 6.7 AV:L/AC:L/PR:H/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-2023-1471 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-22.03-LTS 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-2023-1471 A use-after-free vulnerability in the Linux kernel s netfilter: nf_tables component can be exploited to achieve local privilege escalation.Flaw in the error handling of bound chains causes a use-after-free in the abort path of NFT_MSG_NEWRULE. The vulnerability requires CAP_NET_ADMIN to be triggered.We recommend upgrading past commit 4bedf9eee016286c835e3d8fa981ddece5338795. 2023-08-06 CVE-2023-3610 openEuler-22.03-LTS 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-2023-1471 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-22.03-LTS 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-2023-1471 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-22.03-LTS 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-2023-1471 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-22.03-LTS 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-2023-1471 An issue was discovered in the Linux kernel before 6.3.4. ksmbd has an out-of-bounds read in smb2_find_context_vals when create_context s name_len is larger than the tag length. 2023-08-06 CVE-2023-38426 openEuler-22.03-LTS Critical 9.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H kernel security update 2023-08-06 https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1471 An issue was discovered in the Linux kernel before 6.3.4. fs/ksmbd/smb2pdu.c in ksmbd does not properly check the UserName value because it does not consider the address of security buffer, leading to an out-of-bounds read. 2023-08-06 CVE-2023-38428 openEuler-22.03-LTS Critical 9.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H kernel security update 2023-08-06 https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1471