CVE-2023-1476— Kpatch: mm/mremap.c: incomplete fix for cve-2022-41222
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I. Basic Information for CVE-2023-1476
Vulnerability Information
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Vulnerability Title
Kpatch: mm/mremap.c: incomplete fix for cve-2022-41222
Source: NVD (National Vulnerability Database)
Vulnerability Description
A use-after-free flaw was found in the Linux kernel’s mm/mremap memory address space accounting source code. This issue occurs due to a race condition between rmap walk and mremap, allowing a local user to crash the system or potentially escalate their privileges on the system.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
释放后使用
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel 存在安全漏洞，该漏洞源于内存释放后重用，导致系统崩溃。攻击者利用该漏洞可以提升权限。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 8 | - | cpe:/o:redhat:enterprise_linux:8::baseos |
II. Public POCs for CVE-2023-1476
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Same Patch Batch · Red Hat · 2023-11-03 · 5 CVEs total
| CVE-2023-3961 | 9.1 CRITICAL | Samba: smbd allows client access to unix domain sockets on the file system as root |
| CVE-2023-5824 | 7.5 HIGH | Squid: dos against http and https |
| CVE-2023-4091 | 6.5 MEDIUM | Samba: smb clients can truncate files with read-only permissions |
| CVE-2023-5088 | 6.4 MEDIUM | Qemu: improper ide controller reset can lead to mbr overwrite |
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V. Comments for CVE-2023-1476
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