OESA-2024-1030

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OESA-2024-1030

Summary: kernel security update

Details: The Linux Kernel, the operating system core itself. Security Fix(es): openeuler-linux-kernel-4.19.0-cbs_destroy-NULL-ptr-deref-391216(CVE-2021-33630) openeuler-linux-kernel-5.10.149-ext4_write_inline_data-kernel_bug-365020(CVE-2021-33631) An out-of-bounds read vulnerability was found in the NVMe-oF/TCP subsystem in the Linux kernel. This issue may allow a remote attacker to send a crafted TCP packet, triggering a heap-based buffer overflow that results in kmalloc data being printed and potentially leaked to the kernel ring buffer (dmesg).(CVE-2023-6121) A heap out-of-bounds write vulnerability in the Linux kernel's Performance Events system component can be exploited to achieve local privilege escalation. A perf_event's read_size can overflow, leading to an heap out-of-bounds increment or write in perf_read_group(). We recommend upgrading past commit 382c27f4ed28f803b1f1473ac2d8db0afc795a1b. (CVE-2023-6931) A use-after-free vulnerability in the Linux kernel's ipv4: igmp component can be exploited to achieve local privilege escalation. A race condition can be exploited to cause a timer be mistakenly registered on a RCU read locked object which is freed by another thread. We recommend upgrading past commit e2b706c691905fe78468c361aaabc719d0a496f1. (CVE-2023-6932)

References: https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2024-1030, https://nvd.nist.gov/vuln/detail/CVE-2021-33630, https://nvd.nist.gov/vuln/detail/CVE-2021-33631, https://nvd.nist.gov/vuln/detail/CVE-2023-6121, https://nvd.nist.gov/vuln/detail/CVE-2023-6931, https://nvd.nist.gov/vuln/detail/CVE-2023-6932