CVE-2023-1249 — Use After Free in Kernel

CWE-416 — Use After Free6 documents6 sources
Severity
5.5MEDIUMNVD
EPSS
0.1%
top 83.21%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
8
Linux KernelDebian LinuxMsrc Cbl2 Kernel 5.15.107.1-2 ON CBL Mariner 2.0+5 more
Timeline
PublishedMar 23
Latest updateJul 6

Description

A use-after-free flaw was found in the Linux kernel’s core dump subsystem. This flaw allows a local user to crash the system. Only if patch 390031c94211 ("coredump: Use the vma snapshot in fill_files_note") not applied yet, then kernel could be affected.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages10 packages

▶NVDlinux/linux_kernel< 5.18
▶Debianlinux/linux_kernel< 5.10.113-1+3
▶CVEListV5linux/linux_kernelLinux kernel 5.18-rc1
▶debiandebian/linux< linux 5.17.3-1 (bookworm)

🔴Vulnerability Details

2
GHSA
GHSA-98m9-9rrp-w52h: A use-after-free flaw was found in the Linux kernel’s core dump subsystem↗2023-07-06
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OSV
CVE-2023-1249: A use-after-free flaw was found in the Linux kernel’s core dump subsystem↗2023-03-23
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📋Vendor Advisories

3
Microsoft
A use-after-free flaw was found in the Linux kernel’s core dump subsystem. This flaw allows a local user to crash the system. Only if patch 390031c94211 ("coredump: Use the vma snapshot in fill_files_↗2023-03-14
▶
Debian
CVE-2023-1249: linux - A use-after-free flaw was found in the Linux kernel’s core dump subsystem. This ...↗2023
▶
Red Hat
kernel: missing mmap_lock in file_files_note that could possibly lead to a use after free in the coredump code↗2022-01-31
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CVE-2023-1249 — Use After Free in Linux Kernel | cvebase